./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_init9_ground-2.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/standard_init9_ground-2.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 477192436c119b4e74e1ff9bea9de738ba755c58e7908ace744a87a82dccf838 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 17:54:38,172 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 17:54:38,234 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 17:54:38,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 17:54:38,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 17:54:38,265 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 17:54:38,266 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 17:54:38,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 17:54:38,267 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 17:54:38,267 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 17:54:38,267 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 17:54:38,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 17:54:38,268 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 17:54:38,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 17:54:38,269 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 17:54:38,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 17:54:38,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 17:54:38,271 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 17:54:38,273 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 17:54:38,273 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 17:54:38,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 17:54:38,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 17:54:38,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 17:54:38,275 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 17:54:38,276 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 17:54:38,276 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 17:54:38,276 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 17:54:38,276 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 17:54:38,276 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 17:54:38,277 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 17:54:38,277 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 17:54:38,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 17:54:38,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:54:38,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 17:54:38,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 17:54:38,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 17:54:38,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 17:54:38,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 17:54:38,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 17:54:38,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 17:54:38,280 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 17:54:38,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 17:54:38,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 477192436c119b4e74e1ff9bea9de738ba755c58e7908ace744a87a82dccf838 [2024-11-09 17:54:38,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 17:54:38,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 17:54:38,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 17:54:38,531 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 17:54:38,531 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 17:54:38,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init9_ground-2.i [2024-11-09 17:54:39,852 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 17:54:40,003 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 17:54:40,004 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init9_ground-2.i [2024-11-09 17:54:40,013 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f11bfb32/284ce98c95344738ace0270af62d8884/FLAGbb0888b33 [2024-11-09 17:54:40,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f11bfb32/284ce98c95344738ace0270af62d8884 [2024-11-09 17:54:40,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 17:54:40,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 17:54:40,415 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 17:54:40,415 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 17:54:40,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 17:54:40,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a73e853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40, skipping insertion in model container [2024-11-09 17:54:40,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,446 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 17:54:40,605 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/standard_init9_ground-2.i[816,829] [2024-11-09 17:54:40,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:54:40,637 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 17:54:40,648 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/standard_init9_ground-2.i[816,829] [2024-11-09 17:54:40,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:54:40,669 INFO L204 MainTranslator]: Completed translation [2024-11-09 17:54:40,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40 WrapperNode [2024-11-09 17:54:40,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 17:54:40,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 17:54:40,671 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 17:54:40,671 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 17:54:40,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,697 INFO L138 Inliner]: procedures = 15, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2024-11-09 17:54:40,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 17:54:40,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 17:54:40,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 17:54:40,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 17:54:40,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,708 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,718 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 9 writes are split as follows [0, 9]. [2024-11-09 17:54:40,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,723 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,726 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 17:54:40,727 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 17:54:40,727 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 17:54:40,727 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 17:54:40,728 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40" (1/1) ... [2024-11-09 17:54:40,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:54:40,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:54:40,755 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 17:54:40,756 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 17:54:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 17:54:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 17:54:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 17:54:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 17:54:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 17:54:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 17:54:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 17:54:40,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 17:54:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 17:54:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 17:54:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 17:54:40,853 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 17:54:40,855 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 17:54:40,972 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: 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 17:54:40,991 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-09 17:54:40,992 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 17:54:41,008 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 17:54:41,008 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 17:54:41,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:54:41 BoogieIcfgContainer [2024-11-09 17:54:41,008 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 17:54:41,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 17:54:41,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 17:54:41,013 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 17:54:41,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:54:40" (1/3) ... [2024-11-09 17:54:41,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4e9a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:54:41, skipping insertion in model container [2024-11-09 17:54:41,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:40" (2/3) ... [2024-11-09 17:54:41,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4e9a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:54:41, skipping insertion in model container [2024-11-09 17:54:41,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:54:41" (3/3) ... [2024-11-09 17:54:41,016 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_init9_ground-2.i [2024-11-09 17:54:41,038 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 17:54:41,038 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 17:54:41,083 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 17:54:41,093 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;@321945df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 17:54:41,094 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 17:54:41,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 39 states have (on average 1.564102564102564) internal successors, (61), 40 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:41,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 17:54:41,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:54:41,103 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:54:41,104 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:54:41,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:54:41,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1962798657, now seen corresponding path program 1 times [2024-11-09 17:54:41,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:54:41,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626698619] [2024-11-09 17:54:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:41,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:54:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:41,264 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 17:54:41,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:54:41,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626698619] [2024-11-09 17:54:41,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626698619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:54:41,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:54:41,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 17:54:41,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856397145] [2024-11-09 17:54:41,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:54:41,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 17:54:41,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:54:41,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 17:54:41,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 17:54:41,321 INFO L87 Difference]: Start difference. First operand has 41 states, 39 states have (on average 1.564102564102564) internal successors, (61), 40 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 17:54:41,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:54:41,338 INFO L93 Difference]: Finished difference Result 77 states and 115 transitions. [2024-11-09 17:54:41,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 17:54:41,340 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2024-11-09 17:54:41,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:54:41,347 INFO L225 Difference]: With dead ends: 77 [2024-11-09 17:54:41,347 INFO L226 Difference]: Without dead ends: 36 [2024-11-09 17:54:41,350 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 17:54:41,355 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:54:41,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:54:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-09 17:54:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-09 17:54:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 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 17:54:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-11-09 17:54:41,390 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 25 [2024-11-09 17:54:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:54:41,391 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-11-09 17:54:41,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 17:54:41,392 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-11-09 17:54:41,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 17:54:41,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:54:41,393 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:54:41,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 17:54:41,394 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:54:41,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:54:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1067899737, now seen corresponding path program 1 times [2024-11-09 17:54:41,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:54:41,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448896950] [2024-11-09 17:54:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:41,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:54:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:41,510 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 17:54:41,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:54:41,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448896950] [2024-11-09 17:54:41,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448896950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:54:41,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:54:41,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 17:54:41,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549590014] [2024-11-09 17:54:41,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:54:41,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:54:41,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:54:41,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:54:41,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 17:54:41,514 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:54:41,596 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2024-11-09 17:54:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:54:41,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-09 17:54:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:54:41,598 INFO L225 Difference]: With dead ends: 86 [2024-11-09 17:54:41,598 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 17:54:41,598 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 17:54:41,599 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:54:41,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 54 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:54:41,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 17:54:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-09 17:54:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-11-09 17:54:41,614 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 34 [2024-11-09 17:54:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:54:41,615 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-11-09 17:54:41,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 17:54:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-11-09 17:54:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 17:54:41,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:54:41,616 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:54:41,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 17:54:41,617 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:54:41,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:54:41,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2111492072, now seen corresponding path program 1 times [2024-11-09 17:54:41,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:54:41,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26056397] [2024-11-09 17:54:41,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:41,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:54:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 17:54:41,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:54:41,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26056397] [2024-11-09 17:54:41,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26056397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:54:41,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613142245] [2024-11-09 17:54:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:41,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:54:41,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:54:41,768 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 17:54:41,773 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 17:54:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:41,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 17:54:41,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:54:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 17:54:41,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:54:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 17:54:41,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613142245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:54:41,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:54:41,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 17:54:41,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808074841] [2024-11-09 17:54:41,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:54:41,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 17:54:41,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:54:41,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 17:54:41,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:54:41,953 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 17:54:42,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:54:42,097 INFO L93 Difference]: Finished difference Result 156 states and 200 transitions. [2024-11-09 17:54:42,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 17:54:42,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 52 [2024-11-09 17:54:42,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:54:42,098 INFO L225 Difference]: With dead ends: 156 [2024-11-09 17:54:42,099 INFO L226 Difference]: Without dead ends: 108 [2024-11-09 17:54:42,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 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 17:54:42,102 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 64 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:54:42,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 90 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:54:42,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-09 17:54:42,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-09 17:54:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0934579439252337) internal successors, (117), 107 states have internal predecessors, (117), 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 17:54:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2024-11-09 17:54:42,118 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 52 [2024-11-09 17:54:42,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:54:42,118 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2024-11-09 17:54:42,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 17:54:42,119 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2024-11-09 17:54:42,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 17:54:42,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:54:42,123 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:54:42,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 17:54:42,327 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 17:54:42,328 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:54:42,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:54:42,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1512307755, now seen corresponding path program 2 times [2024-11-09 17:54:42,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:54:42,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520750036] [2024-11-09 17:54:42,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:42,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:54:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-09 17:54:42,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:54:42,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520750036] [2024-11-09 17:54:42,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520750036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:54:42,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855885746] [2024-11-09 17:54:42,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 17:54:42,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:54:42,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:54:42,624 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 17:54:42,626 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 17:54:42,723 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 17:54:42,723 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:54:42,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 17:54:42,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:54:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-09 17:54:42,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:54:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-09 17:54:42,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855885746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:54:42,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:54:42,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 17:54:42,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268343235] [2024-11-09 17:54:42,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:54:42,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 17:54:42,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:54:42,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 17:54:42,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 17:54:42,880 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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 17:54:43,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:54:43,176 INFO L93 Difference]: Finished difference Result 312 states and 383 transitions. [2024-11-09 17:54:43,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 17:54:43,178 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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 106 [2024-11-09 17:54:43,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:54:43,179 INFO L225 Difference]: With dead ends: 312 [2024-11-09 17:54:43,180 INFO L226 Difference]: Without dead ends: 216 [2024-11-09 17:54:43,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 17:54:43,183 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 288 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 17:54:43,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 153 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 17:54:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-09 17:54:43,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-09 17:54:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.0465116279069768) internal successors, (225), 215 states have internal predecessors, (225), 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 17:54:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2024-11-09 17:54:43,207 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 106 [2024-11-09 17:54:43,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:54:43,207 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 225 transitions. [2024-11-09 17:54:43,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 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 17:54:43,208 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 225 transitions. [2024-11-09 17:54:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-09 17:54:43,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:54:43,211 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:54:43,224 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 17:54:43,412 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 17:54:43,412 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:54:43,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:54:43,413 INFO L85 PathProgramCache]: Analyzing trace with hash 649350159, now seen corresponding path program 3 times [2024-11-09 17:54:43,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:54:43,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458742927] [2024-11-09 17:54:43,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:54:43,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:54:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:54:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2024-11-09 17:54:43,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:54:43,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458742927] [2024-11-09 17:54:43,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458742927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:54:43,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301173731] [2024-11-09 17:54:43,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 17:54:43,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:54:43,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:54:43,921 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 17:54:43,922 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 17:55:19,023 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-09 17:55:19,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:55:19,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 17:55:19,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:55:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2024-11-09 17:55:19,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:55:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2024-11-09 17:55:19,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301173731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:55:19,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:55:19,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-09 17:55:19,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727554155] [2024-11-09 17:55:19,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:55:19,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 17:55:19,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:55:19,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 17:55:19,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-09 17:55:19,304 INFO L87 Difference]: Start difference. First operand 216 states and 225 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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 17:55:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:55:19,745 INFO L93 Difference]: Finished difference Result 624 states and 749 transitions. [2024-11-09 17:55:19,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 17:55:19,745 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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 214 [2024-11-09 17:55:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:55:19,748 INFO L225 Difference]: With dead ends: 624 [2024-11-09 17:55:19,751 INFO L226 Difference]: Without dead ends: 432 [2024-11-09 17:55:19,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-09 17:55:19,753 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 494 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 17:55:19,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 270 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 17:55:19,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-09 17:55:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2024-11-09 17:55:19,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 1.023201856148492) internal successors, (441), 431 states have internal predecessors, (441), 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 17:55:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 441 transitions. [2024-11-09 17:55:19,777 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 441 transitions. Word has length 214 [2024-11-09 17:55:19,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:55:19,778 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 441 transitions. [2024-11-09 17:55:19,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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 17:55:19,778 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 441 transitions. [2024-11-09 17:55:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-11-09 17:55:19,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:55:19,784 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:55:19,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 17:55:19,985 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 17:55:19,985 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:55:19,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:55:19,986 INFO L85 PathProgramCache]: Analyzing trace with hash -524411005, now seen corresponding path program 4 times [2024-11-09 17:55:19,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:55:19,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868952118] [2024-11-09 17:55:19,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:55:19,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:55:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:55:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 4048 trivial. 0 not checked. [2024-11-09 17:55:21,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:55:21,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868952118] [2024-11-09 17:55:21,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868952118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:55:21,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343973894] [2024-11-09 17:55:21,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 17:55:21,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:55:21,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:55:21,336 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 17:55:21,337 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 17:55:21,613 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 17:55:21,613 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:55:21,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 1663 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 17:55:21,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:55:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 4048 trivial. 0 not checked. [2024-11-09 17:55:21,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:55:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 4048 trivial. 0 not checked. [2024-11-09 17:55:22,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343973894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:55:22,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:55:22,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-09 17:55:22,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195346639] [2024-11-09 17:55:22,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:55:22,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 17:55:22,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:55:22,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 17:55:22,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 17:55:22,374 INFO L87 Difference]: Start difference. First operand 432 states and 441 transitions. Second operand has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 49 states have internal predecessors, (136), 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 17:55:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:55:23,542 INFO L93 Difference]: Finished difference Result 1248 states and 1481 transitions. [2024-11-09 17:55:23,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 17:55:23,543 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 49 states have internal predecessors, (136), 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 430 [2024-11-09 17:55:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:55:23,546 INFO L225 Difference]: With dead ends: 1248 [2024-11-09 17:55:23,546 INFO L226 Difference]: Without dead ends: 864 [2024-11-09 17:55:23,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 17:55:23,548 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 1104 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 1297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1297 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 17:55:23,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 504 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1297 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 17:55:23,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2024-11-09 17:55:23,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2024-11-09 17:55:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 1.011587485515643) internal successors, (873), 863 states have internal predecessors, (873), 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 17:55:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 873 transitions. [2024-11-09 17:55:23,573 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 873 transitions. Word has length 430 [2024-11-09 17:55:23,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:55:23,573 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 873 transitions. [2024-11-09 17:55:23,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 49 states have internal predecessors, (136), 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 17:55:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 873 transitions. [2024-11-09 17:55:23,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2024-11-09 17:55:23,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:55:23,584 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:55:23,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 17:55:23,788 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 17:55:23,789 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:55:23,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:55:23,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1714630037, now seen corresponding path program 5 times [2024-11-09 17:55:23,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:55:23,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198566521] [2024-11-09 17:55:23,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:55:23,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:55:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:55:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 19458 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 17296 trivial. 0 not checked. [2024-11-09 17:55:27,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:55:27,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198566521] [2024-11-09 17:55:27,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198566521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:55:27,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171637392] [2024-11-09 17:55:27,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 17:55:27,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:55:27,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:55:27,439 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 17:55:27,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process