./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s5if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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-fpi/s5if.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 b618695aa08df106816e7defd71220f009a5c8c09539ff7c8c29235c85f2ce8d --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 10:18:58,142 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:18:58,211 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:18:58,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:18:58,218 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:18:58,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:18:58,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:18:58,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:18:58,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:18:58,270 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:18:58,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:18:58,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:18:58,271 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:18:58,272 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:18:58,274 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:18:58,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:18:58,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:18:58,275 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:18:58,275 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:18:58,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:18:58,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:18:58,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:18:58,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:18:58,278 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:18:58,280 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:18:58,280 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:18:58,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:18:58,281 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:18:58,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:18:58,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:18:58,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:18:58,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:18:58,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:18:58,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:18:58,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:18:58,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:18:58,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:18:58,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:18:58,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:18:58,285 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:18:58,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:18:58,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:18:58,285 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b618695aa08df106816e7defd71220f009a5c8c09539ff7c8c29235c85f2ce8d [2024-11-08 10:18:58,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:18:58,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:18:58,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:18:58,578 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:18:58,579 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:18:58,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s5if.c [2024-11-08 10:19:00,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:19:00,182 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:19:00,183 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s5if.c [2024-11-08 10:19:00,190 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67e8e017/72df82c248564fd9a8cb2de43099ddfa/FLAG2619d9462 [2024-11-08 10:19:00,588 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67e8e017/72df82c248564fd9a8cb2de43099ddfa [2024-11-08 10:19:00,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:19:00,592 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:19:00,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:19:00,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:19:00,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:19:00,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66fe33c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00, skipping insertion in model container [2024-11-08 10:19:00,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,624 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:19:00,777 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-fpi/s5if.c[587,600] [2024-11-08 10:19:00,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:19:00,801 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:19:00,813 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-fpi/s5if.c[587,600] [2024-11-08 10:19:00,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:19:00,833 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:19:00,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00 WrapperNode [2024-11-08 10:19:00,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:19:00,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:19:00,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:19:00,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:19:00,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,866 INFO L138 Inliner]: procedures = 17, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2024-11-08 10:19:00,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:19:00,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:19:00,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:19:00,868 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:19:00,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,878 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,892 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 4, 7, 6]. 37 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 0, 7, 0]. The 4 writes are split as follows [0, 1, 0, 3]. [2024-11-08 10:19:00,893 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,898 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,902 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,909 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:19:00,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:19:00,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:19:00,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:19:00,910 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00" (1/1) ... [2024-11-08 10:19:00,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:19:00,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:00,944 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) [2024-11-08 10:19:00,946 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 [2024-11-08 10:19:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:19:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:19:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 10:19:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 10:19:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 10:19:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 10:19:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 10:19:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 10:19:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 10:19:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 10:19:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 10:19:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:19:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:19:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 10:19:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 10:19:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 10:19:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 10:19:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 10:19:01,076 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:19:01,077 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:19:01,241 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-08 10:19:01,242 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:19:01,252 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:19:01,252 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 10:19:01,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:19:01 BoogieIcfgContainer [2024-11-08 10:19:01,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:19:01,255 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:19:01,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:19:01,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:19:01,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:19:00" (1/3) ... [2024-11-08 10:19:01,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f78b1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:19:01, skipping insertion in model container [2024-11-08 10:19:01,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:19:00" (2/3) ... [2024-11-08 10:19:01,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f78b1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:19:01, skipping insertion in model container [2024-11-08 10:19:01,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:19:01" (3/3) ... [2024-11-08 10:19:01,263 INFO L112 eAbstractionObserver]: Analyzing ICFG s5if.c [2024-11-08 10:19:01,279 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:19:01,279 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:19:01,337 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:19:01,342 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;@28e192c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:19:01,342 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:19:01,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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) [2024-11-08 10:19:01,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 10:19:01,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:01,355 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:01,355 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:01,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:01,360 INFO L85 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2024-11-08 10:19:01,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:01,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896228572] [2024-11-08 10:19:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:01,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:01,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:01,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:01,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896228572] [2024-11-08 10:19:01,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896228572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:19:01,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:19:01,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:19:01,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166583412] [2024-11-08 10:19:01,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:19:01,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 10:19:01,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:01,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 10:19:01,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 10:19:01,572 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-08 10:19:01,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:01,587 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2024-11-08 10:19:01,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 10:19:01,589 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2024-11-08 10:19:01,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:01,594 INFO L225 Difference]: With dead ends: 34 [2024-11-08 10:19:01,595 INFO L226 Difference]: Without dead ends: 15 [2024-11-08 10:19:01,597 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 [2024-11-08 10:19:01,600 INFO L432 NwaCegarLoop]: 22 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, 22 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 [2024-11-08 10:19:01,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:19:01,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-08 10:19:01,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-08 10:19:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2024-11-08 10:19:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-08 10:19:01,625 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2024-11-08 10:19:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:01,625 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-08 10:19:01,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-08 10:19:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-08 10:19:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 10:19:01,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:01,627 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:01,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:19:01,627 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:01,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2024-11-08 10:19:01,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:01,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273029491] [2024-11-08 10:19:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:01,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:01,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:01,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273029491] [2024-11-08 10:19:01,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273029491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:19:01,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:19:01,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:19:01,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690801141] [2024-11-08 10:19:01,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:19:01,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:19:01,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:01,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:19:01,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:19:01,788 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-08 10:19:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:01,854 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2024-11-08 10:19:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:19:01,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2024-11-08 10:19:01,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:01,856 INFO L225 Difference]: With dead ends: 28 [2024-11-08 10:19:01,856 INFO L226 Difference]: Without dead ends: 20 [2024-11-08 10:19:01,857 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 [2024-11-08 10:19:01,859 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:01,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 10 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:19:01,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-08 10:19:01,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2024-11-08 10:19:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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) [2024-11-08 10:19:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-08 10:19:01,866 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2024-11-08 10:19:01,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:01,867 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-08 10:19:01,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-08 10:19:01,867 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-08 10:19:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 10:19:01,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:01,868 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:01,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 10:19:01,868 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:01,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:01,869 INFO L85 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2024-11-08 10:19:01,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:01,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62564811] [2024-11-08 10:19:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:01,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:02,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:02,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62564811] [2024-11-08 10:19:02,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62564811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:02,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126350245] [2024-11-08 10:19:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:02,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:02,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:02,619 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) [2024-11-08 10:19:02,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:19:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:02,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 10:19:02,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:02,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:19:02,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 10:19:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:02,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:03,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126350245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:03,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:03,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2024-11-08 10:19:03,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852679459] [2024-11-08 10:19:03,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:03,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 10:19:03,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:03,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 10:19:03,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-08 10:19:03,140 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 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) [2024-11-08 10:19:03,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:03,421 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2024-11-08 10:19:03,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 10:19:03,421 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 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 16 [2024-11-08 10:19:03,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:03,422 INFO L225 Difference]: With dead ends: 36 [2024-11-08 10:19:03,422 INFO L226 Difference]: Without dead ends: 32 [2024-11-08 10:19:03,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-11-08 10:19:03,424 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:03,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 33 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:19:03,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-08 10:19:03,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2024-11-08 10:19:03,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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) [2024-11-08 10:19:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-08 10:19:03,430 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 16 [2024-11-08 10:19:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:03,431 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-08 10:19:03,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 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) [2024-11-08 10:19:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-08 10:19:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 10:19:03,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:03,432 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:03,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 10:19:03,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:03,637 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:03,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash 680869797, now seen corresponding path program 1 times [2024-11-08 10:19:03,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:03,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717550214] [2024-11-08 10:19:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:03,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:03,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:03,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717550214] [2024-11-08 10:19:03,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717550214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:03,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197193191] [2024-11-08 10:19:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:03,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:03,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:03,905 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) [2024-11-08 10:19:03,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 10:19:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:03,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 10:19:03,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:03,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:19:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:04,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:04,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-08 10:19:04,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-08 10:19:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:04,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197193191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:04,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:04,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-08 10:19:04,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869582562] [2024-11-08 10:19:04,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:04,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 10:19:04,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:04,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 10:19:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:19:04,081 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2024-11-08 10:19:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:04,148 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2024-11-08 10:19:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 10:19:04,148 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 16 [2024-11-08 10:19:04,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:04,149 INFO L225 Difference]: With dead ends: 38 [2024-11-08 10:19:04,149 INFO L226 Difference]: Without dead ends: 26 [2024-11-08 10:19:04,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-08 10:19:04,150 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 28 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:04,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 42 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:19:04,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-08 10:19:04,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-08 10:19:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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) [2024-11-08 10:19:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-08 10:19:04,156 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2024-11-08 10:19:04,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:04,157 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-08 10:19:04,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2024-11-08 10:19:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-08 10:19:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 10:19:04,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:04,159 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:04,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 10:19:04,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-08 10:19:04,360 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:04,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:04,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1137819675, now seen corresponding path program 2 times [2024-11-08 10:19:04,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:04,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788754475] [2024-11-08 10:19:04,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:04,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:04,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:04,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788754475] [2024-11-08 10:19:04,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788754475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:04,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222846735] [2024-11-08 10:19:04,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:19:04,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:04,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:04,458 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) [2024-11-08 10:19:04,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 10:19:04,523 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:19:04,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:04,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 10:19:04,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:04,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:04,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222846735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:04,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:04,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-08 10:19:04,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926810167] [2024-11-08 10:19:04,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:04,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 10:19:04,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:04,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 10:19:04,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-08 10:19:04,621 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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) [2024-11-08 10:19:04,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:04,733 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-11-08 10:19:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 10:19:04,734 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 18 [2024-11-08 10:19:04,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:04,735 INFO L225 Difference]: With dead ends: 33 [2024-11-08 10:19:04,735 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 10:19:04,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-08 10:19:04,736 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:04,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:19:04,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 10:19:04,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2024-11-08 10:19:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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) [2024-11-08 10:19:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-08 10:19:04,741 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 18 [2024-11-08 10:19:04,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:04,742 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-08 10:19:04,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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) [2024-11-08 10:19:04,744 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-08 10:19:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 10:19:04,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:04,745 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:04,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 10:19:04,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:04,950 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:04,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash -479454913, now seen corresponding path program 3 times [2024-11-08 10:19:04,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:04,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799495657] [2024-11-08 10:19:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:04,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:05,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:05,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799495657] [2024-11-08 10:19:05,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799495657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:05,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923332546] [2024-11-08 10:19:05,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:19:05,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:05,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:05,043 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) [2024-11-08 10:19:05,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 10:19:05,115 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 10:19:05,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:05,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 10:19:05,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:05,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:05,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:05,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923332546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:05,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:05,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-08 10:19:05,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798974833] [2024-11-08 10:19:05,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:05,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 10:19:05,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:05,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 10:19:05,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-08 10:19:05,210 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2024-11-08 10:19:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:05,293 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-11-08 10:19:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 10:19:05,294 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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 19 [2024-11-08 10:19:05,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:05,295 INFO L225 Difference]: With dead ends: 37 [2024-11-08 10:19:05,295 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 10:19:05,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-08 10:19:05,297 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:05,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 41 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:19:05,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 10:19:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-08 10:19:05,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 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) [2024-11-08 10:19:05,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-08 10:19:05,304 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2024-11-08 10:19:05,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:05,305 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-08 10:19:05,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2024-11-08 10:19:05,305 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-08 10:19:05,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 10:19:05,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:05,306 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:05,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 10:19:05,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:05,507 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:05,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:05,508 INFO L85 PathProgramCache]: Analyzing trace with hash 634982145, now seen corresponding path program 4 times [2024-11-08 10:19:05,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:05,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666921353] [2024-11-08 10:19:05,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:05,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:05,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:05,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666921353] [2024-11-08 10:19:05,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666921353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:05,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432231496] [2024-11-08 10:19:05,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:19:05,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:05,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:05,971 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) [2024-11-08 10:19:05,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 10:19:06,042 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:19:06,042 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:06,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 10:19:06,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:06,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:19:06,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 10:19:06,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 10:19:06,422 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 10:19:06,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2024-11-08 10:19:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:06,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:06,718 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 10:19:06,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2024-11-08 10:19:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:06,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432231496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:06,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:06,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 34 [2024-11-08 10:19:06,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559455261] [2024-11-08 10:19:06,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:06,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 10:19:06,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:06,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 10:19:06,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 10:19:06,998 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 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) [2024-11-08 10:19:08,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:08,152 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2024-11-08 10:19:08,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 10:19:08,154 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 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 21 [2024-11-08 10:19:08,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:08,156 INFO L225 Difference]: With dead ends: 57 [2024-11-08 10:19:08,156 INFO L226 Difference]: Without dead ends: 47 [2024-11-08 10:19:08,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=364, Invalid=2288, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 10:19:08,160 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:08,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 71 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 10:19:08,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-08 10:19:08,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2024-11-08 10:19:08,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 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) [2024-11-08 10:19:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2024-11-08 10:19:08,172 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 21 [2024-11-08 10:19:08,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:08,172 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2024-11-08 10:19:08,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 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) [2024-11-08 10:19:08,173 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2024-11-08 10:19:08,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 10:19:08,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:08,174 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:08,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 10:19:08,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:08,376 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:08,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:08,376 INFO L85 PathProgramCache]: Analyzing trace with hash 692240447, now seen corresponding path program 1 times [2024-11-08 10:19:08,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:08,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476739970] [2024-11-08 10:19:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:08,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:08,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:08,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476739970] [2024-11-08 10:19:08,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476739970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:08,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14996506] [2024-11-08 10:19:08,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:08,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:08,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:08,592 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) [2024-11-08 10:19:08,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 10:19:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:08,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 10:19:08,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:08,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:19:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:08,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:08,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-08 10:19:08,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 10:19:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:08,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14996506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:08,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:08,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-08 10:19:08,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710137483] [2024-11-08 10:19:08,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:08,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:19:08,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:08,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:19:08,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:19:08,785 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 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) [2024-11-08 10:19:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:08,873 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2024-11-08 10:19:08,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 10:19:08,874 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 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 21 [2024-11-08 10:19:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:08,875 INFO L225 Difference]: With dead ends: 62 [2024-11-08 10:19:08,875 INFO L226 Difference]: Without dead ends: 44 [2024-11-08 10:19:08,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-08 10:19:08,876 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:08,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 54 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:19:08,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-08 10:19:08,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-11-08 10:19:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 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) [2024-11-08 10:19:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-11-08 10:19:08,886 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 21 [2024-11-08 10:19:08,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:08,887 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-11-08 10:19:08,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 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) [2024-11-08 10:19:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-11-08 10:19:08,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 10:19:08,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:08,888 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:08,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 10:19:09,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:09,089 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:09,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:09,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2132829117, now seen corresponding path program 5 times [2024-11-08 10:19:09,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:09,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40805380] [2024-11-08 10:19:09,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:09,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:09,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:09,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40805380] [2024-11-08 10:19:09,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40805380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:09,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329725693] [2024-11-08 10:19:09,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:19:09,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:09,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:09,187 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) [2024-11-08 10:19:09,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 10:19:09,263 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 10:19:09,263 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:09,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 10:19:09,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:09,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:09,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329725693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:09,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:09,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-08 10:19:09,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22519215] [2024-11-08 10:19:09,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:09,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:19:09,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:09,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:19:09,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:19:09,402 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2024-11-08 10:19:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:09,538 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2024-11-08 10:19:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 10:19:09,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 23 [2024-11-08 10:19:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:09,538 INFO L225 Difference]: With dead ends: 52 [2024-11-08 10:19:09,539 INFO L226 Difference]: Without dead ends: 48 [2024-11-08 10:19:09,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-08 10:19:09,539 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:09,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 35 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:19:09,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-08 10:19:09,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2024-11-08 10:19:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 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) [2024-11-08 10:19:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-11-08 10:19:09,547 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 23 [2024-11-08 10:19:09,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:09,548 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-11-08 10:19:09,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2024-11-08 10:19:09,548 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-11-08 10:19:09,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-08 10:19:09,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:09,549 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:09,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 10:19:09,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:09,753 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:09,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:09,753 INFO L85 PathProgramCache]: Analyzing trace with hash -981578845, now seen corresponding path program 2 times [2024-11-08 10:19:09,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:09,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061434220] [2024-11-08 10:19:09,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:09,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:09,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:09,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061434220] [2024-11-08 10:19:09,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061434220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:09,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60258328] [2024-11-08 10:19:09,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:19:09,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:09,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:09,853 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) [2024-11-08 10:19:09,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 10:19:09,931 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:19:09,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:09,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 10:19:09,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:09,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:10,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60258328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:10,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:10,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-08 10:19:10,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196286336] [2024-11-08 10:19:10,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:10,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:19:10,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:10,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:19:10,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:19:10,047 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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) [2024-11-08 10:19:10,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:10,115 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-11-08 10:19:10,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 10:19:10,116 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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 24 [2024-11-08 10:19:10,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:10,116 INFO L225 Difference]: With dead ends: 56 [2024-11-08 10:19:10,116 INFO L226 Difference]: Without dead ends: 30 [2024-11-08 10:19:10,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-08 10:19:10,117 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:10,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 32 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:19:10,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-08 10:19:10,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-08 10:19:10,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 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) [2024-11-08 10:19:10,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-08 10:19:10,122 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2024-11-08 10:19:10,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:10,122 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-08 10:19:10,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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) [2024-11-08 10:19:10,122 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-08 10:19:10,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 10:19:10,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:10,123 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:10,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 10:19:10,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 10:19:10,324 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:10,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:10,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2121994781, now seen corresponding path program 6 times [2024-11-08 10:19:10,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:10,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970581225] [2024-11-08 10:19:10,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:10,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:10,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:10,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970581225] [2024-11-08 10:19:10,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970581225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:10,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097345479] [2024-11-08 10:19:10,900 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:19:10,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:10,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:10,902 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:10,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 10:19:10,976 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-08 10:19:10,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:10,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 10:19:10,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:10,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:19:11,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 10:19:11,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 10:19:11,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 10:19:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:19:11,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:11,749 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:19:11,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 13 [2024-11-08 10:19:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:19:11,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097345479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:11,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:11,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 40 [2024-11-08 10:19:11,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435424482] [2024-11-08 10:19:11,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:11,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 10:19:11,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:11,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 10:19:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1413, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 10:19:11,796 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 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) [2024-11-08 10:19:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:12,869 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2024-11-08 10:19:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-08 10:19:12,869 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 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) Word has length 26 [2024-11-08 10:19:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:12,870 INFO L225 Difference]: With dead ends: 59 [2024-11-08 10:19:12,870 INFO L226 Difference]: Without dead ends: 47 [2024-11-08 10:19:12,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=453, Invalid=3969, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 10:19:12,873 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:12,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 88 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 10:19:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-08 10:19:12,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2024-11-08 10:19:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 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) [2024-11-08 10:19:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-08 10:19:12,885 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2024-11-08 10:19:12,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:12,885 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-08 10:19:12,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 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) [2024-11-08 10:19:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-08 10:19:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 10:19:12,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:12,887 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:12,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 10:19:13,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:13,088 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:13,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:13,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2064736479, now seen corresponding path program 3 times [2024-11-08 10:19:13,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:13,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122263388] [2024-11-08 10:19:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:13,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:13,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:13,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122263388] [2024-11-08 10:19:13,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122263388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:13,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431517117] [2024-11-08 10:19:13,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:19:13,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:13,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:13,326 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:13,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 10:19:13,401 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 10:19:13,401 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:13,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 10:19:13,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:13,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 10:19:13,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:19:13,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-08 10:19:13,569 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:19:13,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:19:13,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431517117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:13,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:13,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2024-11-08 10:19:13,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088616709] [2024-11-08 10:19:13,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:13,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 10:19:13,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:13,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 10:19:13,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-08 10:19:13,667 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 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) [2024-11-08 10:19:14,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:14,223 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2024-11-08 10:19:14,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 10:19:14,223 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 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 26 [2024-11-08 10:19:14,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:14,224 INFO L225 Difference]: With dead ends: 52 [2024-11-08 10:19:14,224 INFO L226 Difference]: Without dead ends: 36 [2024-11-08 10:19:14,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=318, Invalid=1242, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 10:19:14,232 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 31 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:14,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 44 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:19:14,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-08 10:19:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2024-11-08 10:19:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 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) [2024-11-08 10:19:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-08 10:19:14,246 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 26 [2024-11-08 10:19:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:14,247 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-08 10:19:14,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 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) [2024-11-08 10:19:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-08 10:19:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 10:19:14,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:14,247 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:14,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 10:19:14,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 10:19:14,448 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:14,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1661543779, now seen corresponding path program 4 times [2024-11-08 10:19:14,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:14,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334868423] [2024-11-08 10:19:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:14,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:14,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:14,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334868423] [2024-11-08 10:19:14,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334868423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:14,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992047050] [2024-11-08 10:19:14,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:19:14,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:14,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:14,595 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:14,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 10:19:14,673 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:19:14,673 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:14,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 10:19:14,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:14,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 10:19:14,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-08 10:19:14,801 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:19:14,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-08 10:19:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 10:19:14,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 10:19:14,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992047050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:14,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:14,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2024-11-08 10:19:14,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745103168] [2024-11-08 10:19:14,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:14,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 10:19:14,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:14,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 10:19:14,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2024-11-08 10:19:14,987 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 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) [2024-11-08 10:19:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:16,320 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2024-11-08 10:19:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 10:19:16,320 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 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 [2024-11-08 10:19:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:16,321 INFO L225 Difference]: With dead ends: 84 [2024-11-08 10:19:16,321 INFO L226 Difference]: Without dead ends: 56 [2024-11-08 10:19:16,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1888 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=977, Invalid=5029, Unknown=0, NotChecked=0, Total=6006 [2024-11-08 10:19:16,323 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 100 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:16,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 55 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:19:16,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-08 10:19:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 40. [2024-11-08 10:19:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 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) [2024-11-08 10:19:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-08 10:19:16,331 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 34 [2024-11-08 10:19:16,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:16,331 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-08 10:19:16,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 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) [2024-11-08 10:19:16,332 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-08 10:19:16,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 10:19:16,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:16,333 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:16,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 10:19:16,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 10:19:16,538 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:16,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:16,538 INFO L85 PathProgramCache]: Analyzing trace with hash 724113925, now seen corresponding path program 5 times [2024-11-08 10:19:16,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:16,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309584992] [2024-11-08 10:19:16,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:16,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 38 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:16,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:16,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309584992] [2024-11-08 10:19:16,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309584992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:16,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277423596] [2024-11-08 10:19:16,750 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:19:16,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:16,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:16,752 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:16,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 10:19:16,961 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-08 10:19:16,961 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:16,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 10:19:16,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:17,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:17,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277423596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:17,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:17,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-08 10:19:17,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781521935] [2024-11-08 10:19:17,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:17,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 10:19:17,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:17,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 10:19:17,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-08 10:19:17,192 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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) [2024-11-08 10:19:17,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:17,352 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2024-11-08 10:19:17,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 10:19:17,352 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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 [2024-11-08 10:19:17,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:17,353 INFO L225 Difference]: With dead ends: 104 [2024-11-08 10:19:17,353 INFO L226 Difference]: Without dead ends: 65 [2024-11-08 10:19:17,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-08 10:19:17,354 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 62 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:17,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 29 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:19:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-08 10:19:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 42. [2024-11-08 10:19:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 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) [2024-11-08 10:19:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-11-08 10:19:17,363 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 39 [2024-11-08 10:19:17,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:17,363 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-11-08 10:19:17,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 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) [2024-11-08 10:19:17,364 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-11-08 10:19:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 10:19:17,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:17,365 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:17,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 10:19:17,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 10:19:17,565 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:17,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:17,566 INFO L85 PathProgramCache]: Analyzing trace with hash -294413625, now seen corresponding path program 6 times [2024-11-08 10:19:17,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:17,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143466964] [2024-11-08 10:19:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:17,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 29 proven. 51 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 10:19:18,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:18,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143466964] [2024-11-08 10:19:18,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143466964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:18,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141147103] [2024-11-08 10:19:18,048 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:19:18,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:18,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:18,050 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:18,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 10:19:18,190 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-08 10:19:18,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:18,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 10:19:18,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:18,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:19:18,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:19:18,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-08 10:19:18,252 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-08 10:19:18,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-08 10:19:18,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 10:19:18,525 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 17 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:18,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:19,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-08 10:19:19,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 86 [2024-11-08 10:19:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:19,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141147103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:19,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:19,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 21] total 44 [2024-11-08 10:19:19,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605073636] [2024-11-08 10:19:19,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:19,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 10:19:19,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:19,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 10:19:19,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1573, Unknown=1, NotChecked=0, Total=1892 [2024-11-08 10:19:19,863 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 44 states, 44 states have (on average 2.022727272727273) internal successors, (89), 44 states have internal predecessors, (89), 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) [2024-11-08 10:19:20,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:20,238 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2024-11-08 10:19:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 10:19:20,239 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.022727272727273) internal successors, (89), 44 states have internal predecessors, (89), 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 41 [2024-11-08 10:19:20,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:20,239 INFO L225 Difference]: With dead ends: 58 [2024-11-08 10:19:20,240 INFO L226 Difference]: Without dead ends: 46 [2024-11-08 10:19:20,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=378, Invalid=1973, Unknown=1, NotChecked=0, Total=2352 [2024-11-08 10:19:20,243 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 38 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:20,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 82 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 10:19:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-08 10:19:20,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-11-08 10:19:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 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) [2024-11-08 10:19:20,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-11-08 10:19:20,256 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 41 [2024-11-08 10:19:20,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:20,256 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-11-08 10:19:20,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.022727272727273) internal successors, (89), 44 states have internal predecessors, (89), 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) [2024-11-08 10:19:20,257 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-11-08 10:19:20,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 10:19:20,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:20,257 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:20,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 10:19:20,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 10:19:20,458 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:20,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:20,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1771002085, now seen corresponding path program 7 times [2024-11-08 10:19:20,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:20,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782113680] [2024-11-08 10:19:20,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:20,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 54 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:20,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:20,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782113680] [2024-11-08 10:19:20,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782113680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:20,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11087021] [2024-11-08 10:19:20,683 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:19:20,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:20,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:20,685 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:20,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 10:19:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:20,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 10:19:20,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:20,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:21,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11087021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:21,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:21,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-08 10:19:21,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917508360] [2024-11-08 10:19:21,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:21,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 10:19:21,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:21,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 10:19:21,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-08 10:19:21,125 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 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) [2024-11-08 10:19:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:21,279 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2024-11-08 10:19:21,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 10:19:21,280 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 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) Word has length 44 [2024-11-08 10:19:21,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:21,280 INFO L225 Difference]: With dead ends: 112 [2024-11-08 10:19:21,280 INFO L226 Difference]: Without dead ends: 70 [2024-11-08 10:19:21,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 66 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-08 10:19:21,281 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 56 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:21,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 38 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:19:21,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-08 10:19:21,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 47. [2024-11-08 10:19:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 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) [2024-11-08 10:19:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2024-11-08 10:19:21,294 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 44 [2024-11-08 10:19:21,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:21,294 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2024-11-08 10:19:21,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.730769230769231) internal successors, (71), 26 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) [2024-11-08 10:19:21,294 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-11-08 10:19:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 10:19:21,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:21,299 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:21,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 10:19:21,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:21,500 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:21,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:21,500 INFO L85 PathProgramCache]: Analyzing trace with hash 146952089, now seen corresponding path program 8 times [2024-11-08 10:19:21,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:21,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996458623] [2024-11-08 10:19:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:21,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 24 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:22,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:22,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996458623] [2024-11-08 10:19:22,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996458623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:22,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318559811] [2024-11-08 10:19:22,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:19:22,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:22,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:22,077 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:22,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 10:19:22,177 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:19:22,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:22,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 10:19:22,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:22,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:19:22,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:19:22,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-08 10:19:22,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:19:22,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-08 10:19:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 38 proven. 74 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 10:19:22,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:23,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-08 10:19:23,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2024-11-08 10:19:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 74 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 10:19:23,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318559811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:23,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:23,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 17] total 48 [2024-11-08 10:19:23,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939711865] [2024-11-08 10:19:23,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:23,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-08 10:19:23,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:23,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-08 10:19:23,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1996, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 10:19:23,144 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 48 states have internal predecessors, (109), 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) [2024-11-08 10:19:23,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:23,793 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2024-11-08 10:19:23,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 10:19:23,793 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 48 states have internal predecessors, (109), 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 [2024-11-08 10:19:23,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:23,794 INFO L225 Difference]: With dead ends: 69 [2024-11-08 10:19:23,794 INFO L226 Difference]: Without dead ends: 57 [2024-11-08 10:19:23,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=538, Invalid=3622, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 10:19:23,795 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 58 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:23,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 109 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 10:19:23,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-08 10:19:23,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2024-11-08 10:19:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 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) [2024-11-08 10:19:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2024-11-08 10:19:23,805 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 46 [2024-11-08 10:19:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:23,805 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2024-11-08 10:19:23,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.2708333333333335) internal successors, (109), 48 states have internal predecessors, (109), 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) [2024-11-08 10:19:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2024-11-08 10:19:23,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 10:19:23,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:23,806 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:23,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 10:19:24,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 10:19:24,007 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:24,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:24,007 INFO L85 PathProgramCache]: Analyzing trace with hash 60090633, now seen corresponding path program 9 times [2024-11-08 10:19:24,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:24,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076141381] [2024-11-08 10:19:24,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:24,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 73 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:24,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:24,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076141381] [2024-11-08 10:19:24,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076141381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:24,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479949545] [2024-11-08 10:19:24,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:19:24,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:24,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:24,277 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:24,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 10:19:24,446 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-08 10:19:24,447 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:24,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 10:19:24,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:24,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 10:19:24,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-08 10:19:24,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-08 10:19:27,804 INFO L349 Elim1Store]: treesize reduction 10, result has 65.5 percent of original size [2024-11-08 10:19:27,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 28 [2024-11-08 10:19:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-08 10:19:27,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 36 proven. 63 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-08 10:19:28,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479949545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:28,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:28,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 16] total 37 [2024-11-08 10:19:28,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376970229] [2024-11-08 10:19:28,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:28,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-08 10:19:28,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:28,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-08 10:19:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1163, Unknown=2, NotChecked=0, Total=1332 [2024-11-08 10:19:28,179 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 37 states have internal predecessors, (85), 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) [2024-11-08 10:19:31,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:31,969 INFO L93 Difference]: Finished difference Result 139 states and 160 transitions. [2024-11-08 10:19:31,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-08 10:19:31,970 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 37 states have internal predecessors, (85), 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 49 [2024-11-08 10:19:31,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:31,970 INFO L225 Difference]: With dead ends: 139 [2024-11-08 10:19:31,970 INFO L226 Difference]: Without dead ends: 94 [2024-11-08 10:19:31,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6282 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2527, Invalid=15831, Unknown=2, NotChecked=0, Total=18360 [2024-11-08 10:19:31,975 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 165 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:31,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 67 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 10:19:31,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-08 10:19:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 55. [2024-11-08 10:19:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 54 states have internal predecessors, (60), 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) [2024-11-08 10:19:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2024-11-08 10:19:31,990 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 49 [2024-11-08 10:19:31,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:31,991 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2024-11-08 10:19:31,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 37 states have internal predecessors, (85), 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) [2024-11-08 10:19:31,991 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2024-11-08 10:19:31,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 10:19:31,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:31,991 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:32,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 10:19:32,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 10:19:32,192 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:32,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1653707301, now seen corresponding path program 10 times [2024-11-08 10:19:32,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:32,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569437536] [2024-11-08 10:19:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:32,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 95 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:32,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:32,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569437536] [2024-11-08 10:19:32,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569437536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:32,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055614076] [2024-11-08 10:19:32,548 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:19:32,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:32,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:32,550 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:32,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 10:19:32,662 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:19:32,662 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:32,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 10:19:32,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:32,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 10:19:32,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-08 10:19:32,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-08 10:19:32,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-08 10:19:32,994 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:19:32,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2024-11-08 10:19:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 36 proven. 129 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 10:19:33,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 36 proven. 129 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 10:19:33,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055614076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:33,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:33,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 61 [2024-11-08 10:19:33,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591387812] [2024-11-08 10:19:33,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:33,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-08 10:19:33,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:33,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-08 10:19:33,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=3141, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 10:19:33,800 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 61 states, 61 states have (on average 2.180327868852459) internal successors, (133), 61 states have internal predecessors, (133), 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) [2024-11-08 10:19:46,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:46,265 INFO L93 Difference]: Finished difference Result 362 states and 439 transitions. [2024-11-08 10:19:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 274 states. [2024-11-08 10:19:46,265 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.180327868852459) internal successors, (133), 61 states have internal predecessors, (133), 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 54 [2024-11-08 10:19:46,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:46,266 INFO L225 Difference]: With dead ends: 362 [2024-11-08 10:19:46,266 INFO L226 Difference]: Without dead ends: 303 [2024-11-08 10:19:46,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42344 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=11313, Invalid=96599, Unknown=0, NotChecked=0, Total=107912 [2024-11-08 10:19:46,292 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 269 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2904 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:46,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 82 Invalid, 2991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2904 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 10:19:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-08 10:19:46,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 60. [2024-11-08 10:19:46,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 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) [2024-11-08 10:19:46,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-11-08 10:19:46,317 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 54 [2024-11-08 10:19:46,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:46,318 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-11-08 10:19:46,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.180327868852459) internal successors, (133), 61 states have internal predecessors, (133), 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) [2024-11-08 10:19:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-11-08 10:19:46,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 10:19:46,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:46,319 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:46,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 10:19:46,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:46,519 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:46,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:46,520 INFO L85 PathProgramCache]: Analyzing trace with hash 575023501, now seen corresponding path program 11 times [2024-11-08 10:19:46,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:46,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630316438] [2024-11-08 10:19:46,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:46,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 120 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:46,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:46,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630316438] [2024-11-08 10:19:46,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630316438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:46,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220525470] [2024-11-08 10:19:46,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:19:46,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:46,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:46,909 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:46,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 10:19:48,201 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-08 10:19:48,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:48,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 10:19:48,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 145 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:48,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 145 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:48,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220525470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:48,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:48,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-08 10:19:48,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626321829] [2024-11-08 10:19:48,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:48,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 10:19:48,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:48,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 10:19:48,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 10:19:48,661 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 35 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 35 states have internal predecessors, (95), 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) [2024-11-08 10:19:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:48,954 INFO L93 Difference]: Finished difference Result 190 states and 227 transitions. [2024-11-08 10:19:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 10:19:48,955 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 35 states have internal predecessors, (95), 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 59 [2024-11-08 10:19:48,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:48,955 INFO L225 Difference]: With dead ends: 190 [2024-11-08 10:19:48,955 INFO L226 Difference]: Without dead ends: 114 [2024-11-08 10:19:48,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 87 SyntacticMatches, 19 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=471, Invalid=1421, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 10:19:48,956 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 123 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:48,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 44 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:19:48,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-08 10:19:48,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 62. [2024-11-08 10:19:48,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 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) [2024-11-08 10:19:48,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2024-11-08 10:19:48,978 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 59 [2024-11-08 10:19:48,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:48,978 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2024-11-08 10:19:48,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 35 states have internal predecessors, (95), 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) [2024-11-08 10:19:48,978 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2024-11-08 10:19:48,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 10:19:48,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:48,979 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:48,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 10:19:49,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:49,179 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:49,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:49,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1664791887, now seen corresponding path program 12 times [2024-11-08 10:19:49,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:49,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577789661] [2024-11-08 10:19:49,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:49,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 9 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:51,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:51,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577789661] [2024-11-08 10:19:51,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577789661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:51,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286361397] [2024-11-08 10:19:51,149 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:19:51,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:51,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:51,151 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:51,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 10:19:51,538 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-08 10:19:51,539 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:51,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-08 10:19:51,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:51,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:19:51,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:19:51,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-08 10:19:51,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:19:51,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-08 10:19:51,860 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-08 10:19:51,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-08 10:19:51,965 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-08 10:19:51,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2024-11-08 10:19:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 80 proven. 139 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 10:19:52,423 INFO L311 TraceCheckSpWp]: Computing backward predicates...