./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/sorting_bubblesort_2_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/sorting_bubblesort_2_ground.i -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 2e8196ca3e7f8da6be63ed057317b8a370ba560e11740ea9a51451f140c434c1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 17:48:51,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 17:48:51,277 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 17:48:51,283 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 17:48:51,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 17:48:51,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 17:48:51,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 17:48:51,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 17:48:51,305 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 17:48:51,306 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 17:48:51,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 17:48:51,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 17:48:51,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 17:48:51,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 17:48:51,309 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 17:48:51,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 17:48:51,309 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 17:48:51,310 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 17:48:51,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 17:48:51,310 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 17:48:51,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 17:48:51,324 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 17:48:51,324 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 17:48:51,324 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 17:48:51,325 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 17:48:51,325 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 17:48:51,325 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 17:48:51,325 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 17:48:51,326 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 17:48:51,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 17:48:51,326 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 17:48:51,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 17:48:51,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:48:51,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 17:48:51,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 17:48:51,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 17:48:51,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 17:48:51,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 17:48:51,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 17:48:51,329 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 17:48:51,329 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 17:48:51,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 17:48:51,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e8196ca3e7f8da6be63ed057317b8a370ba560e11740ea9a51451f140c434c1 [2024-11-09 17:48:51,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 17:48:51,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 17:48:51,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 17:48:51,628 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 17:48:51,629 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 17:48:51,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/sorting_bubblesort_2_ground.i [2024-11-09 17:48:53,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 17:48:53,184 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 17:48:53,185 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sorting_bubblesort_2_ground.i [2024-11-09 17:48:53,192 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab2dcce69/4eefdb3bdf6b4d70bf3b0ac44908d959/FLAG133e5afa7 [2024-11-09 17:48:53,206 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab2dcce69/4eefdb3bdf6b4d70bf3b0ac44908d959 [2024-11-09 17:48:53,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 17:48:53,210 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 17:48:53,212 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 17:48:53,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 17:48:53,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 17:48:53,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6e24df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53, skipping insertion in model container [2024-11-09 17:48:53,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,240 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 17:48:53,448 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-examples/sorting_bubblesort_2_ground.i[820,833] [2024-11-09 17:48:53,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:48:53,481 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 17:48:53,492 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-examples/sorting_bubblesort_2_ground.i[820,833] [2024-11-09 17:48:53,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:48:53,523 INFO L204 MainTranslator]: Completed translation [2024-11-09 17:48:53,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53 WrapperNode [2024-11-09 17:48:53,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 17:48:53,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 17:48:53,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 17:48:53,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 17:48:53,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,539 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,556 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2024-11-09 17:48:53,558 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 17:48:53,559 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 17:48:53,559 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 17:48:53,559 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 17:48:53,569 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,571 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,583 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-09 17:48:53,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,588 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 17:48:53,593 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 17:48:53,593 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 17:48:53,593 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 17:48:53,594 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53" (1/1) ... [2024-11-09 17:48:53,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:48:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:48:53,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 17:48:53,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 17:48:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 17:48:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 17:48:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 17:48:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 17:48:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 17:48:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 17:48:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 17:48:53,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 17:48:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 17:48:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 17:48:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 17:48:53,819 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 17:48:53,824 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 17:48:53,960 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2024-11-09 17:48:53,969 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 17:48:53,969 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 17:48:53,984 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 17:48:53,985 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 17:48:53,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:48:53 BoogieIcfgContainer [2024-11-09 17:48:53,986 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 17:48:53,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 17:48:53,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 17:48:53,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 17:48:53,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:48:53" (1/3) ... [2024-11-09 17:48:53,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662268b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:48:53, skipping insertion in model container [2024-11-09 17:48:53,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:48:53" (2/3) ... [2024-11-09 17:48:53,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662268b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:48:53, skipping insertion in model container [2024-11-09 17:48:53,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:48:53" (3/3) ... [2024-11-09 17:48:53,996 INFO L112 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_2_ground.i [2024-11-09 17:48:54,012 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 17:48:54,013 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 17:48:54,063 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 17:48:54,069 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;@466a76b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 17:48:54,069 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 17:48:54,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.5) internal successors, (39), 27 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) [2024-11-09 17:48:54,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 17:48:54,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:48:54,080 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:48:54,080 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:48:54,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:48:54,085 INFO L85 PathProgramCache]: Analyzing trace with hash 139842433, now seen corresponding path program 1 times [2024-11-09 17:48:54,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:48:54,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501291028] [2024-11-09 17:48:54,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:48:54,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:48:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:48:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:48:54,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:48:54,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501291028] [2024-11-09 17:48:54,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501291028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:48:54,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:48:54,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 17:48:54,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621407102] [2024-11-09 17:48:54,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:48:54,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 17:48:54,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:48:54,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 17:48:54,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 17:48:54,279 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.5) internal successors, (39), 27 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:54,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:48:54,294 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2024-11-09 17:48:54,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 17:48:54,298 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2024-11-09 17:48:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:48:54,305 INFO L225 Difference]: With dead ends: 51 [2024-11-09 17:48:54,305 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 17:48:54,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 17:48:54,313 INFO L432 NwaCegarLoop]: 32 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, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:48:54,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:48:54,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 17:48:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 17:48:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 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) [2024-11-09 17:48:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-11-09 17:48:54,343 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 13 [2024-11-09 17:48:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:48:54,344 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-11-09 17:48:54,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:54,345 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-11-09 17:48:54,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 17:48:54,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:48:54,346 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:48:54,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 17:48:54,347 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:48:54,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:48:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash -342036772, now seen corresponding path program 1 times [2024-11-09 17:48:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:48:54,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802663562] [2024-11-09 17:48:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:48:54,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:48:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:48:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:48:54,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:48:54,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802663562] [2024-11-09 17:48:54,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802663562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:48:54,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:48:54,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 17:48:54,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267487669] [2024-11-09 17:48:54,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:48:54,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:48:54,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:48:54,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:48:54,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 17:48:54,465 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:54,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:48:54,479 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2024-11-09 17:48:54,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:48:54,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2024-11-09 17:48:54,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:48:54,481 INFO L225 Difference]: With dead ends: 44 [2024-11-09 17:48:54,481 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 17:48:54,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 17:48:54,484 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:48:54,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:48:54,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 17:48:54,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 17:48:54,491 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) [2024-11-09 17:48:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-09 17:48:54,493 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 15 [2024-11-09 17:48:54,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:48:54,493 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-09 17:48:54,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:54,493 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-09 17:48:54,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 17:48:54,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:48:54,494 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:48:54,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 17:48:54,495 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:48:54,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:48:54,495 INFO L85 PathProgramCache]: Analyzing trace with hash -682725507, now seen corresponding path program 1 times [2024-11-09 17:48:54,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:48:54,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859953889] [2024-11-09 17:48:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:48:54,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:48:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:48:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:48:54,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:48:54,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859953889] [2024-11-09 17:48:54,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859953889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:48:54,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270263634] [2024-11-09 17:48:54,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:48:54,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:48:54,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:48:54,618 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:48:54,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 17:48:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:48:54,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 17:48:54,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:48:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:48:54,736 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 17:48:54,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270263634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:48:54,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 17:48:54,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 17:48:54,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208824995] [2024-11-09 17:48:54,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:48:54,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:48:54,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:48:54,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:48:54,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:48:54,743 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:54,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:48:54,762 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2024-11-09 17:48:54,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:48:54,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 17 [2024-11-09 17:48:54,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:48:54,763 INFO L225 Difference]: With dead ends: 43 [2024-11-09 17:48:54,763 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 17:48:54,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:48:54,765 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:48:54,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 56 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:48:54,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 17:48:54,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 17:48:54,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 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) [2024-11-09 17:48:54,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-11-09 17:48:54,771 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 17 [2024-11-09 17:48:54,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:48:54,772 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-11-09 17:48:54,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-11-09 17:48:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 17:48:54,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:48:54,774 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:48:54,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 17:48:54,978 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 [2024-11-09 17:48:54,979 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:48:54,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:48:54,981 INFO L85 PathProgramCache]: Analyzing trace with hash 292726304, now seen corresponding path program 1 times [2024-11-09 17:48:54,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:48:54,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632809984] [2024-11-09 17:48:54,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:48:54,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:48:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:48:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:48:55,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:48:55,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632809984] [2024-11-09 17:48:55,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632809984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:48:55,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337326892] [2024-11-09 17:48:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:48:55,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:48:55,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:48:55,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:48:55,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 17:48:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:48:55,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 17:48:55,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:48:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:48:55,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 17:48:55,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337326892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:48:55,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 17:48:55,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 17:48:55,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612105282] [2024-11-09 17:48:55,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:48:55,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:48:55,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:48:55,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:48:55,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:48:55,169 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:55,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:48:55,184 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2024-11-09 17:48:55,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:48:55,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-09 17:48:55,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:48:55,186 INFO L225 Difference]: With dead ends: 62 [2024-11-09 17:48:55,186 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 17:48:55,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 17:48:55,187 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:48:55,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 46 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:48:55,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 17:48:55,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2024-11-09 17:48:55,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2024-11-09 17:48:55,190 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 22 [2024-11-09 17:48:55,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:48:55,191 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2024-11-09 17:48:55,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:55,191 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-09 17:48:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 17:48:55,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:48:55,192 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:48:55,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 17:48:55,392 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 [2024-11-09 17:48:55,393 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:48:55,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:48:55,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1604448413, now seen corresponding path program 1 times [2024-11-09 17:48:55,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:48:55,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709306470] [2024-11-09 17:48:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:48:55,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:48:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:48:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 17:48:55,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:48:55,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709306470] [2024-11-09 17:48:55,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709306470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:48:55,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082428897] [2024-11-09 17:48:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:48:55,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:48:55,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:48:55,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:48:55,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 17:48:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:48:55,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 17:48:55,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:48:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 17:48:55,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:48:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 17:48:55,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082428897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:48:55,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:48:55,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 17:48:55,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379396791] [2024-11-09 17:48:55,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:48:55,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 17:48:55,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:48:55,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 17:48:55,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:48:55,635 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:55,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:48:55,677 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2024-11-09 17:48:55,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 17:48:55,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-09 17:48:55,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:48:55,682 INFO L225 Difference]: With dead ends: 68 [2024-11-09 17:48:55,683 INFO L226 Difference]: Without dead ends: 40 [2024-11-09 17:48:55,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:48:55,684 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:48:55,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:48:55,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-09 17:48:55,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-09 17:48:55,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 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) [2024-11-09 17:48:55,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2024-11-09 17:48:55,692 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 26 [2024-11-09 17:48:55,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:48:55,693 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2024-11-09 17:48:55,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:55,693 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2024-11-09 17:48:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 17:48:55,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:48:55,695 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:48:55,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 17:48:55,895 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 [2024-11-09 17:48:55,896 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:48:55,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:48:55,896 INFO L85 PathProgramCache]: Analyzing trace with hash 176875104, now seen corresponding path program 2 times [2024-11-09 17:48:55,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:48:55,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482114693] [2024-11-09 17:48:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:48:55,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:48:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:48:56,028 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 17:48:56,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:48:56,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482114693] [2024-11-09 17:48:56,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482114693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:48:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817536059] [2024-11-09 17:48:56,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 17:48:56,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:48:56,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:48:56,033 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:48:56,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 17:48:56,118 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 17:48:56,119 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:48:56,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 17:48:56,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:48:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 17:48:56,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:48:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 17:48:56,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817536059] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:48:56,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:48:56,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-09 17:48:56,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719024627] [2024-11-09 17:48:56,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:48:56,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 17:48:56,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:48:56,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 17:48:56,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-09 17:48:56,300 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 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) [2024-11-09 17:48:56,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:48:56,366 INFO L93 Difference]: Finished difference Result 91 states and 115 transitions. [2024-11-09 17:48:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 17:48:56,368 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 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) Word has length 32 [2024-11-09 17:48:56,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:48:56,369 INFO L225 Difference]: With dead ends: 91 [2024-11-09 17:48:56,369 INFO L226 Difference]: Without dead ends: 63 [2024-11-09 17:48:56,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-09 17:48:56,370 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:48:56,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 156 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:48:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-09 17:48:56,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2024-11-09 17:48:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 58 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-11-09 17:48:56,386 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 32 [2024-11-09 17:48:56,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:48:56,387 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-11-09 17:48:56,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 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) [2024-11-09 17:48:56,387 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-11-09 17:48:56,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 17:48:56,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:48:56,388 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:48:56,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 17:48:56,589 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 [2024-11-09 17:48:56,589 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:48:56,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:48:56,590 INFO L85 PathProgramCache]: Analyzing trace with hash 387672925, now seen corresponding path program 3 times [2024-11-09 17:48:56,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:48:56,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13250233] [2024-11-09 17:48:56,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:48:56,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:48:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:48:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 17:48:56,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:48:56,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13250233] [2024-11-09 17:48:56,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13250233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:48:56,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238584797] [2024-11-09 17:48:56,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 17:48:56,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:48:56,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:48:56,732 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:48:56,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 17:48:56,812 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 17:48:56,812 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:48:56,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 17:48:56,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:48:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 17:48:56,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:48:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 17:48:56,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238584797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:48:56,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:48:56,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-09 17:48:56,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664220403] [2024-11-09 17:48:56,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:48:56,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 17:48:56,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:48:56,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 17:48:56,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-09 17:48:56,887 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:56,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:48:56,928 INFO L93 Difference]: Finished difference Result 125 states and 156 transitions. [2024-11-09 17:48:56,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 17:48:56,929 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 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 48 [2024-11-09 17:48:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:48:56,931 INFO L225 Difference]: With dead ends: 125 [2024-11-09 17:48:56,931 INFO L226 Difference]: Without dead ends: 91 [2024-11-09 17:48:56,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-09 17:48:56,932 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:48:56,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 55 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:48:56,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-09 17:48:56,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-09 17:48:56,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 90 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2024-11-09 17:48:56,942 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 48 [2024-11-09 17:48:56,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:48:56,942 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2024-11-09 17:48:56,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:56,943 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2024-11-09 17:48:56,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 17:48:56,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:48:56,944 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 7, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:48:56,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 17:48:57,148 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 [2024-11-09 17:48:57,149 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:48:57,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:48:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash 919723369, now seen corresponding path program 4 times [2024-11-09 17:48:57,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:48:57,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106341359] [2024-11-09 17:48:57,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:48:57,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:48:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:48:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-09 17:48:57,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:48:57,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106341359] [2024-11-09 17:48:57,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106341359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:48:57,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756804359] [2024-11-09 17:48:57,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 17:48:57,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:48:57,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:48:57,453 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:48:57,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 17:48:57,550 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 17:48:57,551 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:48:57,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 17:48:57,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:48:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 2 proven. 72 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 17:48:57,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:48:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 2 proven. 72 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 17:48:57,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756804359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:48:57,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:48:57,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2024-11-09 17:48:57,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609010327] [2024-11-09 17:48:57,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:48:57,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 17:48:57,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:48:57,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 17:48:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-11-09 17:48:57,860 INFO L87 Difference]: Start difference. First operand 91 states and 107 transitions. Second operand has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:57,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:48:57,965 INFO L93 Difference]: Finished difference Result 224 states and 288 transitions. [2024-11-09 17:48:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 17:48:57,966 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-09 17:48:57,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:48:57,967 INFO L225 Difference]: With dead ends: 224 [2024-11-09 17:48:57,967 INFO L226 Difference]: Without dead ends: 157 [2024-11-09 17:48:57,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-11-09 17:48:57,968 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 59 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:48:57,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 176 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:48:57,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-09 17:48:57,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-09 17:48:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.2115384615384615) internal successors, (189), 156 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 189 transitions. [2024-11-09 17:48:57,982 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 189 transitions. Word has length 64 [2024-11-09 17:48:57,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:48:57,985 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 189 transitions. [2024-11-09 17:48:57,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 189 transitions. [2024-11-09 17:48:57,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 17:48:57,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:48:57,987 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 12, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:48:58,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 17:48:58,187 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 [2024-11-09 17:48:58,188 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:48:58,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:48:58,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1039677184, now seen corresponding path program 5 times [2024-11-09 17:48:58,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:48:58,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859026251] [2024-11-09 17:48:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:48:58,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:48:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:48:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2024-11-09 17:48:58,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:48:58,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859026251] [2024-11-09 17:48:58,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859026251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:48:58,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816776849] [2024-11-09 17:48:58,509 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 17:48:58,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:48:58,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:48:58,511 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:48:58,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 17:48:58,662 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-09 17:48:58,662 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:48:58,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 17:48:58,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:48:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 2 proven. 392 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 17:48:58,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:48:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 2 proven. 392 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 17:48:59,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816776849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:48:59,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:48:59,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 44 [2024-11-09 17:48:59,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994787938] [2024-11-09 17:48:59,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:48:59,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 17:48:59,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:48:59,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 17:48:59,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 17:48:59,473 INFO L87 Difference]: Start difference. First operand 157 states and 189 transitions. Second operand has 44 states, 44 states have (on average 3.8181818181818183) internal successors, (168), 44 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:48:59,652 INFO L93 Difference]: Finished difference Result 418 states and 546 transitions. [2024-11-09 17:48:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 17:48:59,652 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.8181818181818183) internal successors, (168), 44 states have internal predecessors, (168), 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 98 [2024-11-09 17:48:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:48:59,654 INFO L225 Difference]: With dead ends: 418 [2024-11-09 17:48:59,654 INFO L226 Difference]: Without dead ends: 287 [2024-11-09 17:48:59,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 17:48:59,656 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 107 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:48:59,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 207 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:48:59,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-09 17:48:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-09 17:48:59,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.2272727272727273) internal successors, (351), 286 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:59,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 351 transitions. [2024-11-09 17:48:59,682 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 351 transitions. Word has length 98 [2024-11-09 17:48:59,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:48:59,683 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 351 transitions. [2024-11-09 17:48:59,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.8181818181818183) internal successors, (168), 44 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:48:59,683 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 351 transitions. [2024-11-09 17:48:59,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-09 17:48:59,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:48:59,685 INFO L215 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 13, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:48:59,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 17:48:59,889 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 [2024-11-09 17:48:59,890 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:48:59,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:48:59,890 INFO L85 PathProgramCache]: Analyzing trace with hash -912443153, now seen corresponding path program 6 times [2024-11-09 17:48:59,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:48:59,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447318626] [2024-11-09 17:48:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:48:59,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:48:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-11-09 17:49:00,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:00,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447318626] [2024-11-09 17:49:00,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447318626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:00,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426194842] [2024-11-09 17:49:00,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 17:49:00,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:00,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:00,292 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:00,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 17:49:00,650 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-11-09 17:49:00,650 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:00,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 17:49:00,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-11-09 17:49:00,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-11-09 17:49:01,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426194842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:01,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:01,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-11-09 17:49:01,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248211218] [2024-11-09 17:49:01,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:01,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 17:49:01,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 17:49:01,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-09 17:49:01,028 INFO L87 Difference]: Start difference. First operand 287 states and 351 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:01,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:01,069 INFO L93 Difference]: Finished difference Result 574 states and 715 transitions. [2024-11-09 17:49:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 17:49:01,070 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 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 164 [2024-11-09 17:49:01,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:01,072 INFO L225 Difference]: With dead ends: 574 [2024-11-09 17:49:01,072 INFO L226 Difference]: Without dead ends: 315 [2024-11-09 17:49:01,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-09 17:49:01,074 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:01,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:49:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-09 17:49:01,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2024-11-09 17:49:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.2070063694267517) internal successors, (379), 314 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 379 transitions. [2024-11-09 17:49:01,088 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 379 transitions. Word has length 164 [2024-11-09 17:49:01,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:01,088 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 379 transitions. [2024-11-09 17:49:01,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 29 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:01,089 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 379 transitions. [2024-11-09 17:49:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-09 17:49:01,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:01,091 INFO L215 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 27, 26, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:01,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 17:49:01,291 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 [2024-11-09 17:49:01,292 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:01,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:01,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1772988321, now seen corresponding path program 7 times [2024-11-09 17:49:01,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:01,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344910968] [2024-11-09 17:49:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:01,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:02,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2504 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-11-09 17:49:02,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:02,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344910968] [2024-11-09 17:49:02,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344910968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:02,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095727929] [2024-11-09 17:49:02,325 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 17:49:02,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:02,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:02,326 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:02,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 17:49:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:02,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 17:49:02,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2504 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-11-09 17:49:02,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2504 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-11-09 17:49:03,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095727929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:03,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:03,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 57 [2024-11-09 17:49:03,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612281458] [2024-11-09 17:49:03,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:03,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-09 17:49:03,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-09 17:49:03,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 17:49:03,485 INFO L87 Difference]: Start difference. First operand 315 states and 379 transitions. Second operand has 57 states, 57 states have (on average 2.3157894736842106) internal successors, (132), 57 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:03,566 INFO L93 Difference]: Finished difference Result 630 states and 785 transitions. [2024-11-09 17:49:03,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-09 17:49:03,567 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.3157894736842106) internal successors, (132), 57 states have internal predecessors, (132), 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 192 [2024-11-09 17:49:03,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:03,569 INFO L225 Difference]: With dead ends: 630 [2024-11-09 17:49:03,569 INFO L226 Difference]: Without dead ends: 371 [2024-11-09 17:49:03,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 17:49:03,570 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:03,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:49:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-09 17:49:03,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2024-11-09 17:49:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.1756756756756757) internal successors, (435), 370 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:03,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 435 transitions. [2024-11-09 17:49:03,580 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 435 transitions. Word has length 192 [2024-11-09 17:49:03,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:03,580 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 435 transitions. [2024-11-09 17:49:03,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.3157894736842106) internal successors, (132), 57 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 435 transitions. [2024-11-09 17:49:03,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-09 17:49:03,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:03,584 INFO L215 NwaCegarLoop]: trace histogram [55, 54, 31, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:03,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 17:49:03,784 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 [2024-11-09 17:49:03,784 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:03,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:03,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1280747525, now seen corresponding path program 8 times [2024-11-09 17:49:03,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:03,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624024105] [2024-11-09 17:49:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:03,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:06,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4772 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-11-09 17:49:06,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:06,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624024105] [2024-11-09 17:49:06,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624024105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:06,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109887810] [2024-11-09 17:49:06,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 17:49:06,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:06,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:06,407 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:06,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 17:49:06,615 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 17:49:06,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:06,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-09 17:49:06,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4772 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-11-09 17:49:06,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4772 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-11-09 17:49:10,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109887810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:10,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:10,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 113 [2024-11-09 17:49:10,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355110010] [2024-11-09 17:49:10,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:10,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-11-09 17:49:10,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:10,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-11-09 17:49:10,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2024-11-09 17:49:10,041 INFO L87 Difference]: Start difference. First operand 371 states and 435 transitions. Second operand has 113 states, 113 states have (on average 2.15929203539823) internal successors, (244), 113 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:10,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:10,191 INFO L93 Difference]: Finished difference Result 742 states and 925 transitions. [2024-11-09 17:49:10,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-09 17:49:10,192 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.15929203539823) internal successors, (244), 113 states have internal predecessors, (244), 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 248 [2024-11-09 17:49:10,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:10,194 INFO L225 Difference]: With dead ends: 742 [2024-11-09 17:49:10,194 INFO L226 Difference]: Without dead ends: 483 [2024-11-09 17:49:10,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2024-11-09 17:49:10,198 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:10,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 252 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:49:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-11-09 17:49:10,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2024-11-09 17:49:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.1348547717842323) internal successors, (547), 482 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 547 transitions. [2024-11-09 17:49:10,209 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 547 transitions. Word has length 248 [2024-11-09 17:49:10,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:10,209 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 547 transitions. [2024-11-09 17:49:10,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.15929203539823) internal successors, (244), 113 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:10,210 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 547 transitions. [2024-11-09 17:49:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-09 17:49:10,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:10,214 INFO L215 NwaCegarLoop]: trace histogram [111, 110, 31, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:10,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 17:49:10,415 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 [2024-11-09 17:49:10,415 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:10,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:10,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1379453747, now seen corresponding path program 9 times [2024-11-09 17:49:10,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:10,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013873403] [2024-11-09 17:49:10,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:10,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 14012 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-11-09 17:49:17,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:17,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013873403] [2024-11-09 17:49:17,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013873403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:17,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017327075] [2024-11-09 17:49:17,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 17:49:17,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:17,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:17,976 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:17,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 17:49:24,340 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2024-11-09 17:49:24,340 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:24,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 17:49:24,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14012 backedges. 2 proven. 1800 refuted. 0 times theorem prover too weak. 12210 trivial. 0 not checked. [2024-11-09 17:49:25,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14012 backedges. 2 proven. 1800 refuted. 0 times theorem prover too weak. 12210 trivial. 0 not checked. [2024-11-09 17:49:28,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017327075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:28,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:28,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 33, 33] total 175 [2024-11-09 17:49:28,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122143740] [2024-11-09 17:49:28,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:28,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-11-09 17:49:28,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:28,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-11-09 17:49:28,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8343, Invalid=22107, Unknown=0, NotChecked=0, Total=30450 [2024-11-09 17:49:28,010 INFO L87 Difference]: Start difference. First operand 483 states and 547 transitions. Second operand has 175 states, 175 states have (on average 2.822857142857143) internal successors, (494), 175 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:28,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:28,528 INFO L93 Difference]: Finished difference Result 1000 states and 1256 transitions. [2024-11-09 17:49:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2024-11-09 17:49:28,529 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 175 states have (on average 2.822857142857143) internal successors, (494), 175 states have internal predecessors, (494), 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 360 [2024-11-09 17:49:28,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:28,534 INFO L225 Difference]: With dead ends: 1000 [2024-11-09 17:49:28,535 INFO L226 Difference]: Without dead ends: 741 [2024-11-09 17:49:28,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6820 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=8343, Invalid=22107, Unknown=0, NotChecked=0, Total=30450 [2024-11-09 17:49:28,538 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 227 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:28,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 410 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 17:49:28,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-09 17:49:28,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2024-11-09 17:49:28,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 1.1743243243243244) internal successors, (869), 740 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 869 transitions. [2024-11-09 17:49:28,560 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 869 transitions. Word has length 360 [2024-11-09 17:49:28,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:28,561 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 869 transitions. [2024-11-09 17:49:28,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 175 states have (on average 2.822857142857143) internal successors, (494), 175 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:28,562 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 869 transitions. [2024-11-09 17:49:28,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-11-09 17:49:28,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:28,568 INFO L215 NwaCegarLoop]: trace histogram [112, 111, 63, 62, 62, 62, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:28,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 17:49:28,769 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 [2024-11-09 17:49:28,769 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:28,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:28,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1543855188, now seen corresponding path program 10 times [2024-11-09 17:49:28,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:28,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917667843] [2024-11-09 17:49:28,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:28,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 20122 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 7690 trivial. 0 not checked. [2024-11-09 17:49:36,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:36,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917667843] [2024-11-09 17:49:36,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917667843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:36,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408757196] [2024-11-09 17:49:36,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 17:49:36,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:36,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:36,158 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:36,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 17:49:36,519 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 17:49:36,520 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:49:36,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-09 17:49:36,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:49:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 20122 backedges. 2 proven. 7688 refuted. 0 times theorem prover too weak. 12432 trivial. 0 not checked. [2024-11-09 17:49:40,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:49:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 20122 backedges. 2 proven. 7688 refuted. 0 times theorem prover too weak. 12432 trivial. 0 not checked. [2024-11-09 17:49:46,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408757196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:49:46,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:49:46,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 65, 65] total 240 [2024-11-09 17:49:46,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584336230] [2024-11-09 17:49:46,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:49:46,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 240 states [2024-11-09 17:49:46,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:49:46,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2024-11-09 17:49:46,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14568, Invalid=42792, Unknown=0, NotChecked=0, Total=57360 [2024-11-09 17:49:46,503 INFO L87 Difference]: Start difference. First operand 741 states and 869 transitions. Second operand has 240 states, 240 states have (on average 3.1333333333333333) internal successors, (752), 240 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:48,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:49:48,722 INFO L93 Difference]: Finished difference Result 1770 states and 2282 transitions. [2024-11-09 17:49:48,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2024-11-09 17:49:48,723 INFO L78 Accepts]: Start accepts. Automaton has has 240 states, 240 states have (on average 3.1333333333333333) internal successors, (752), 240 states have internal predecessors, (752), 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 490 [2024-11-09 17:49:48,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:49:48,728 INFO L225 Difference]: With dead ends: 1770 [2024-11-09 17:49:48,728 INFO L226 Difference]: Without dead ends: 1255 [2024-11-09 17:49:48,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1092 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13986 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=14568, Invalid=42792, Unknown=0, NotChecked=0, Total=57360 [2024-11-09 17:49:48,734 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 475 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 17:49:48,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 649 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 17:49:48,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-09 17:49:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2024-11-09 17:49:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.2049441786283892) internal successors, (1511), 1254 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1511 transitions. [2024-11-09 17:49:48,771 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1511 transitions. Word has length 490 [2024-11-09 17:49:48,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:49:48,772 INFO L471 AbstractCegarLoop]: Abstraction has 1255 states and 1511 transitions. [2024-11-09 17:49:48,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 240 states, 240 states have (on average 3.1333333333333333) internal successors, (752), 240 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:49:48,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1511 transitions. [2024-11-09 17:49:48,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2024-11-09 17:49:48,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:49:48,783 INFO L215 NwaCegarLoop]: trace histogram [127, 126, 126, 126, 113, 112, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:49:48,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 17:49:48,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 17:49:48,984 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:49:48,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:49:48,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1872928555, now seen corresponding path program 11 times [2024-11-09 17:49:48,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:49:48,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673789338] [2024-11-09 17:49:48,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:49:48,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:49:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:49:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 44410 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 31754 trivial. 0 not checked. [2024-11-09 17:49:57,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:49:57,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673789338] [2024-11-09 17:49:57,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673789338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:49:57,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184013141] [2024-11-09 17:49:57,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 17:49:57,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:49:57,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:49:57,880 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:49:57,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process