./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_two_index_03.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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_two_index_03.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 52914d7c178662889d0d1af19e507e51f5067aa3fe7ebdb303f414406fa46b67 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:25:50,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:25:50,213 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:25:50,219 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:25:50,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:25:50,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:25:50,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:25:50,253 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:25:50,254 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:25:50,255 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:25:50,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:25:50,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:25:50,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:25:50,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:25:50,258 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:25:50,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:25:50,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:25:50,259 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:25:50,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:25:50,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:25:50,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:25:50,261 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:25:50,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:25:50,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:25:50,262 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:25:50,262 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:25:50,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:25:50,262 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:25:50,263 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:25:50,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:25:50,263 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:25:50,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:25:50,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:25:50,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:25:50,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:25:50,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:25:50,266 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:25:50,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:25:50,266 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:25:50,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:25:50,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:25:50,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:25:50,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52914d7c178662889d0d1af19e507e51f5067aa3fe7ebdb303f414406fa46b67 [2024-11-16 02:25:50,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:25:50,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:25:50,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:25:50,551 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:25:50,552 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:25:50,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_two_index_03.i [2024-11-16 02:25:52,029 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:25:52,249 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:25:52,250 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_two_index_03.i [2024-11-16 02:25:52,258 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e1d66bf8/4fa847927f6540669bf777b1412a154c/FLAG2d86be0cb [2024-11-16 02:25:52,600 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e1d66bf8/4fa847927f6540669bf777b1412a154c [2024-11-16 02:25:52,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:25:52,605 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:25:52,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:25:52,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:25:52,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:25:52,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a8584c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52, skipping insertion in model container [2024-11-16 02:25:52,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,638 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:25:52,834 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_two_index_03.i[814,827] [2024-11-16 02:25:52,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:25:52,865 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:25:52,877 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_two_index_03.i[814,827] [2024-11-16 02:25:52,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:25:52,903 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:25:52,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52 WrapperNode [2024-11-16 02:25:52,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:25:52,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:25:52,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:25:52,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:25:52,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,921 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,938 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2024-11-16 02:25:52,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:25:52,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:25:52,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:25:52,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:25:52,949 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,951 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,965 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-16 02:25:52,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,971 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,971 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,978 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:25:52,981 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:25:52,981 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:25:52,981 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:25:52,986 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52" (1/1) ... [2024-11-16 02:25:52,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:25:53,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:25:53,022 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) [2024-11-16 02:25:53,026 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 [2024-11-16 02:25:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:25:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:25:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:25:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:25:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:25:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:25:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:25:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:25:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:25:53,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:25:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:25:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:25:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:25:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:25:53,193 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:25:53,195 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:25:53,354 INFO L1250 $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;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset; [2024-11-16 02:25:53,362 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-16 02:25:53,362 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:25:53,381 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:25:53,381 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:25:53,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:25:53 BoogieIcfgContainer [2024-11-16 02:25:53,382 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:25:53,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:25:53,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:25:53,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:25:53,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:25:52" (1/3) ... [2024-11-16 02:25:53,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6526c84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:25:53, skipping insertion in model container [2024-11-16 02:25:53,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:25:52" (2/3) ... [2024-11-16 02:25:53,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6526c84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:25:53, skipping insertion in model container [2024-11-16 02:25:53,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:25:53" (3/3) ... [2024-11-16 02:25:53,394 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_two_index_03.i [2024-11-16 02:25:53,414 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:25:53,414 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:25:53,484 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:25:53,492 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;@128291e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:25:53,493 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:25:53,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:53,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 02:25:53,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:25:53,504 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:25:53,505 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:25:53,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:25:53,510 INFO L85 PathProgramCache]: Analyzing trace with hash 886668597, now seen corresponding path program 1 times [2024-11-16 02:25:53,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:25:53,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992769711] [2024-11-16 02:25:53,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:53,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:25:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:25:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:25:53,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:25:53,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992769711] [2024-11-16 02:25:53,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992769711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:25:53,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:25:53,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:25:53,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860434721] [2024-11-16 02:25:53,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:25:53,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:25:53,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:25:53,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:25:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:25:53,723 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:53,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:25:53,736 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2024-11-16 02:25:53,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:25:53,738 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-16 02:25:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:25:53,745 INFO L225 Difference]: With dead ends: 35 [2024-11-16 02:25:53,745 INFO L226 Difference]: Without dead ends: 15 [2024-11-16 02:25:53,748 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 [2024-11-16 02:25:53,753 INFO L432 NwaCegarLoop]: 21 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, 21 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 [2024-11-16 02:25:53,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:25:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-16 02:25:53,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-16 02:25:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-16 02:25:53,783 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2024-11-16 02:25:53,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:25:53,783 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-16 02:25:53,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-16 02:25:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 02:25:53,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:25:53,784 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:25:53,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:25:53,785 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:25:53,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:25:53,786 INFO L85 PathProgramCache]: Analyzing trace with hash 752241008, now seen corresponding path program 1 times [2024-11-16 02:25:53,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:25:53,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922062150] [2024-11-16 02:25:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:53,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:25:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:25:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:25:53,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:25:53,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922062150] [2024-11-16 02:25:53,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922062150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:25:53,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:25:53,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:25:53,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830730236] [2024-11-16 02:25:53,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:25:53,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:25:53,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:25:53,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:25:53,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:25:53,956 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2024-11-16 02:25:53,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:25:53,974 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2024-11-16 02:25:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:25:53,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 [2024-11-16 02:25:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:25:53,976 INFO L225 Difference]: With dead ends: 28 [2024-11-16 02:25:53,976 INFO L226 Difference]: Without dead ends: 17 [2024-11-16 02:25:53,976 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 [2024-11-16 02:25:53,977 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 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 [2024-11-16 02:25:53,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:25:53,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-16 02:25:53,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-16 02:25:53,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:53,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-16 02:25:53,985 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2024-11-16 02:25:53,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:25:53,985 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-16 02:25:53,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2024-11-16 02:25:53,985 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-16 02:25:53,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 02:25:53,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:25:53,986 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:25:53,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:25:53,986 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:25:53,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:25:53,992 INFO L85 PathProgramCache]: Analyzing trace with hash -550171535, now seen corresponding path program 1 times [2024-11-16 02:25:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:25:53,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994092736] [2024-11-16 02:25:53,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:53,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:25:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:25:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:25:54,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:25:54,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994092736] [2024-11-16 02:25:54,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994092736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:25:54,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704052120] [2024-11-16 02:25:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:54,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:25:54,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:25:54,146 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) [2024-11-16 02:25:54,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:25:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:25:54,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:25:54,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:25:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:25:54,252 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:25:54,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704052120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:25:54,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:25:54,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2024-11-16 02:25:54,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672198620] [2024-11-16 02:25:54,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:25:54,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:25:54,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:25:54,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:25:54,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:25:54,257 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-11-16 02:25:54,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:25:54,290 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2024-11-16 02:25:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:25:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 [2024-11-16 02:25:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:25:54,293 INFO L225 Difference]: With dead ends: 34 [2024-11-16 02:25:54,295 INFO L226 Difference]: Without dead ends: 26 [2024-11-16 02:25:54,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:25:54,296 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:25:54,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:25:54,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-16 02:25:54,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2024-11-16 02:25:54,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 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) [2024-11-16 02:25:54,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-11-16 02:25:54,307 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2024-11-16 02:25:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:25:54,307 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-11-16 02:25:54,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-11-16 02:25:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-11-16 02:25:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-16 02:25:54,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:25:54,308 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:25:54,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 02:25:54,512 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 [2024-11-16 02:25:54,513 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:25:54,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:25:54,514 INFO L85 PathProgramCache]: Analyzing trace with hash -283035344, now seen corresponding path program 1 times [2024-11-16 02:25:54,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:25:54,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190571738] [2024-11-16 02:25:54,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:54,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:25:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:25:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:25:54,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:25:54,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190571738] [2024-11-16 02:25:54,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190571738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:25:54,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117475975] [2024-11-16 02:25:54,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:54,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:25:54,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:25:54,592 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) [2024-11-16 02:25:54,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:25:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:25:54,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:25:54,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:25:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:25:54,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:25:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:25:54,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117475975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:25:54,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:25:54,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 02:25:54,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136242176] [2024-11-16 02:25:54,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:25:54,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 02:25:54,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:25:54,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 02:25:54,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:25:54,729 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:54,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:25:54,766 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2024-11-16 02:25:54,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:25:54,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-16 02:25:54,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:25:54,768 INFO L225 Difference]: With dead ends: 54 [2024-11-16 02:25:54,768 INFO L226 Difference]: Without dead ends: 41 [2024-11-16 02:25:54,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:25:54,769 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 25 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:25:54,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 39 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:25:54,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-16 02:25:54,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 27. [2024-11-16 02:25:54,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:54,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-16 02:25:54,774 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 17 [2024-11-16 02:25:54,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:25:54,775 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-16 02:25:54,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:54,775 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-16 02:25:54,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-16 02:25:54,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:25:54,776 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:25:54,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 02:25:54,976 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 [2024-11-16 02:25:54,977 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:25:54,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:25:54,977 INFO L85 PathProgramCache]: Analyzing trace with hash 62380082, now seen corresponding path program 2 times [2024-11-16 02:25:54,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:25:54,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115876628] [2024-11-16 02:25:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:54,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:25:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:25:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:25:55,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:25:55,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115876628] [2024-11-16 02:25:55,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115876628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:25:55,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486829014] [2024-11-16 02:25:55,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:25:55,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:25:55,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:25:55,149 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) [2024-11-16 02:25:55,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:25:55,237 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:25:55,237 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:25:55,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:25:55,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:25:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:25:55,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:25:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 02:25:55,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486829014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:25:55,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:25:55,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2024-11-16 02:25:55,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469284205] [2024-11-16 02:25:55,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:25:55,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:25:55,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:25:55,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:25:55,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=92, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:25:55,382 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:55,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:25:55,478 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2024-11-16 02:25:55,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 02:25:55,479 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-16 02:25:55,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:25:55,480 INFO L225 Difference]: With dead ends: 97 [2024-11-16 02:25:55,480 INFO L226 Difference]: Without dead ends: 82 [2024-11-16 02:25:55,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=92, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:25:55,481 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 68 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:25:55,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 78 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:25:55,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-16 02:25:55,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 47. [2024-11-16 02:25:55,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2024-11-16 02:25:55,488 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 25 [2024-11-16 02:25:55,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:25:55,489 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2024-11-16 02:25:55,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:55,489 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2024-11-16 02:25:55,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-16 02:25:55,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:25:55,490 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:25:55,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 02:25:55,690 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 [2024-11-16 02:25:55,691 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:25:55,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:25:55,691 INFO L85 PathProgramCache]: Analyzing trace with hash 112684662, now seen corresponding path program 3 times [2024-11-16 02:25:55,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:25:55,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63008366] [2024-11-16 02:25:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:55,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:25:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:25:55,902 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-16 02:25:55,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:25:55,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63008366] [2024-11-16 02:25:55,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63008366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:25:55,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324698560] [2024-11-16 02:25:55,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:25:55,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:25:55,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:25:55,905 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) [2024-11-16 02:25:55,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:25:56,003 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-16 02:25:56,003 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:25:56,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 02:25:56,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:25:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-16 02:25:56,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:25:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-16 02:25:56,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324698560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:25:56,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:25:56,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-16 02:25:56,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014604273] [2024-11-16 02:25:56,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:25:56,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 02:25:56,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:25:56,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 02:25:56,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-16 02:25:56,160 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:56,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:25:56,306 INFO L93 Difference]: Finished difference Result 163 states and 174 transitions. [2024-11-16 02:25:56,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 02:25:56,307 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-16 02:25:56,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:25:56,309 INFO L225 Difference]: With dead ends: 163 [2024-11-16 02:25:56,310 INFO L226 Difference]: Without dead ends: 142 [2024-11-16 02:25:56,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-16 02:25:56,311 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 251 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:25:56,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 96 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:25:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-16 02:25:56,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 63. [2024-11-16 02:25:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-11-16 02:25:56,324 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 45 [2024-11-16 02:25:56,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:25:56,324 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-11-16 02:25:56,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:25:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-11-16 02:25:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-16 02:25:56,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:25:56,326 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:25:56,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 02:25:56,526 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 [2024-11-16 02:25:56,526 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:25:56,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:25:56,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2086308496, now seen corresponding path program 4 times [2024-11-16 02:25:56,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:25:56,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553591490] [2024-11-16 02:25:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:56,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:25:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:25:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-16 02:25:56,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:25:56,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553591490] [2024-11-16 02:25:56,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553591490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:25:56,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226390441] [2024-11-16 02:25:56,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:25:56,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:25:56,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:25:56,932 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) [2024-11-16 02:25:56,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:25:57,058 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:25:57,058 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:25:57,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 02:25:57,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:25:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-16 02:25:57,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:25:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-16 02:25:57,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226390441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:25:57,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:25:57,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2024-11-16 02:25:57,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968596182] [2024-11-16 02:25:57,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:25:57,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-16 02:25:57,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:25:57,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-16 02:25:57,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=702, Invalid=704, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 02:25:57,519 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 38 states, 38 states have (on average 2.526315789473684) internal successors, (96), 38 states have internal predecessors, (96), 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) [2024-11-16 02:25:57,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:25:57,766 INFO L93 Difference]: Finished difference Result 277 states and 309 transitions. [2024-11-16 02:25:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-16 02:25:57,767 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.526315789473684) internal successors, (96), 38 states have internal predecessors, (96), 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 61 [2024-11-16 02:25:57,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:25:57,769 INFO L225 Difference]: With dead ends: 277 [2024-11-16 02:25:57,773 INFO L226 Difference]: Without dead ends: 242 [2024-11-16 02:25:57,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=702, Invalid=704, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 02:25:57,775 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 389 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:25:57,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 227 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:25:57,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-16 02:25:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 121. [2024-11-16 02:25:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.025) internal successors, (123), 120 states have internal predecessors, (123), 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) [2024-11-16 02:25:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2024-11-16 02:25:57,793 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 61 [2024-11-16 02:25:57,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:25:57,793 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2024-11-16 02:25:57,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.526315789473684) internal successors, (96), 38 states have internal predecessors, (96), 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) [2024-11-16 02:25:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2024-11-16 02:25:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-16 02:25:57,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:25:57,797 INFO L215 NwaCegarLoop]: trace histogram [36, 35, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:25:57,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 02:25:57,997 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 [2024-11-16 02:25:57,998 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:25:57,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:25:57,998 INFO L85 PathProgramCache]: Analyzing trace with hash -579983231, now seen corresponding path program 5 times [2024-11-16 02:25:57,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:25:58,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118282099] [2024-11-16 02:25:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:25:58,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:25:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:25:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2024-11-16 02:25:58,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:25:58,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118282099] [2024-11-16 02:25:58,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118282099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:25:58,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058746408] [2024-11-16 02:25:58,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:25:58,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:25:58,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:25:58,687 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) [2024-11-16 02:25:58,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process