./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_partition_ground-2.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_partition_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 fcf72d109deb69f1acda4466c7376bd6c362d474983f8a50a2faed8c0a192a76 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:24:03,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:24:03,379 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:24:03,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:24:03,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:24:03,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:24:03,404 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:24:03,404 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:24:03,405 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:24:03,408 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:24:03,408 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:24:03,408 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:24:03,408 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:24:03,408 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:24:03,409 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:24:03,409 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:24:03,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:24:03,409 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:24:03,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:24:03,411 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:24:03,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:24:03,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:24:03,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:24:03,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:24:03,412 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:24:03,412 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:24:03,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:24:03,412 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:24:03,413 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:24:03,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:24:03,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:24:03,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:24:03,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:24:03,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:24:03,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:24:03,414 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:24:03,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:24:03,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:24:03,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:24:03,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:24:03,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:24:03,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:24:03,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fcf72d109deb69f1acda4466c7376bd6c362d474983f8a50a2faed8c0a192a76 [2024-11-16 02:24:03,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:24:03,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:24:03,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:24:03,630 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:24:03,631 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:24:03,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_partition_ground-2.i [2024-11-16 02:24:04,850 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:24:04,994 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:24:04,995 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-2.i [2024-11-16 02:24:05,001 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a130394/96f8944c24de4b43ab4ffe9e2082d642/FLAG5fe18c123 [2024-11-16 02:24:05,011 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9a130394/96f8944c24de4b43ab4ffe9e2082d642 [2024-11-16 02:24:05,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:24:05,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:24:05,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:24:05,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:24:05,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:24:05,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2664776f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05, skipping insertion in model container [2024-11-16 02:24:05,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,035 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:24:05,154 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_partition_ground-2.i[820,833] [2024-11-16 02:24:05,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:24:05,177 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:24:05,186 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_partition_ground-2.i[820,833] [2024-11-16 02:24:05,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:24:05,204 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:24:05,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05 WrapperNode [2024-11-16 02:24:05,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:24:05,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:24:05,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:24:05,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:24:05,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,228 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2024-11-16 02:24:05,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:24:05,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:24:05,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:24:05,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:24:05,236 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,239 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,251 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 2, 5]. 56 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 02:24:05,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,256 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,259 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:24:05,260 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:24:05,260 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:24:05,260 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:24:05,261 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05" (1/1) ... [2024-11-16 02:24:05,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:24:05,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:05,287 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 02:24:05,290 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 02:24:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:24:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:24:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:24:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:24:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:24:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:24:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:24:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:24:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:24:05,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:24:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:24:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:24:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:24:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:24:05,409 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:24:05,411 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:24:05,549 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#aa~0#1.base, main_~#aa~0#1.offset);havoc main_~#aa~0#1.base, main_~#aa~0#1.offset;call ULTIMATE.dealloc(main_~#bb~0#1.base, main_~#bb~0#1.offset);havoc main_~#bb~0#1.base, main_~#bb~0#1.offset; [2024-11-16 02:24:05,557 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-16 02:24:05,557 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:24:05,570 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:24:05,570 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:24:05,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:24:05 BoogieIcfgContainer [2024-11-16 02:24:05,570 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:24:05,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:24:05,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:24:05,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:24:05,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:24:05" (1/3) ... [2024-11-16 02:24:05,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52441b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:24:05, skipping insertion in model container [2024-11-16 02:24:05,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:24:05" (2/3) ... [2024-11-16 02:24:05,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52441b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:24:05, skipping insertion in model container [2024-11-16 02:24:05,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:24:05" (3/3) ... [2024-11-16 02:24:05,579 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-2.i [2024-11-16 02:24:05,595 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:24:05,595 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:24:05,646 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:24:05,652 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;@13606af7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:24:05,653 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:24:05,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 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 02:24:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 02:24:05,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:05,662 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:05,662 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:05,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:05,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1106028063, now seen corresponding path program 1 times [2024-11-16 02:24:05,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:05,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268004227] [2024-11-16 02:24:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:05,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:05,786 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 02:24:05,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:05,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268004227] [2024-11-16 02:24:05,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268004227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:24:05,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:24:05,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:24:05,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953206939] [2024-11-16 02:24:05,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:24:05,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:24:05,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:05,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:24:05,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:24:05,810 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:05,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:05,822 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2024-11-16 02:24:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:24:05,825 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-16 02:24:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:05,830 INFO L225 Difference]: With dead ends: 49 [2024-11-16 02:24:05,830 INFO L226 Difference]: Without dead ends: 22 [2024-11-16 02:24:05,833 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 02:24:05,835 INFO L432 NwaCegarLoop]: 31 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, 31 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 02:24:05,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:05,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-16 02:24:05,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-16 02:24:05,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:05,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-16 02:24:05,887 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2024-11-16 02:24:05,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:05,887 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-16 02:24:05,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:05,887 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-16 02:24:05,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 02:24:05,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:05,888 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:05,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:24:05,888 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:05,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:05,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1079451563, now seen corresponding path program 1 times [2024-11-16 02:24:05,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:05,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474223802] [2024-11-16 02:24:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:05,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:05,976 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 02:24:05,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:05,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474223802] [2024-11-16 02:24:05,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474223802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:24:05,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:24:05,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:24:05,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418476976] [2024-11-16 02:24:05,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:24:05,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:24:05,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:05,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:24:05,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:24:05,979 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:05,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:05,987 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2024-11-16 02:24:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:24:05,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-16 02:24:05,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:05,988 INFO L225 Difference]: With dead ends: 42 [2024-11-16 02:24:05,988 INFO L226 Difference]: Without dead ends: 24 [2024-11-16 02:24:05,988 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 02:24:05,989 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:05,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:05,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-16 02:24:05,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-16 02:24:05,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 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 02:24:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-16 02:24:05,993 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 16 [2024-11-16 02:24:05,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:05,993 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-16 02:24:05,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-16 02:24:05,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-16 02:24:05,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:05,993 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:05,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:24:05,994 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:05,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1978053290, now seen corresponding path program 1 times [2024-11-16 02:24:05,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:05,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520140962] [2024-11-16 02:24:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:05,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:06,078 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 02:24:06,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:06,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520140962] [2024-11-16 02:24:06,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520140962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:06,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042328221] [2024-11-16 02:24:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:06,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:06,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:06,081 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 02:24:06,082 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 02:24:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:06,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:24:06,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:06,197 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 02:24:06,197 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:24:06,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042328221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:24:06,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:24:06,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 02:24:06,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318565928] [2024-11-16 02:24:06,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:24:06,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:24:06,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:06,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:24:06,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:24:06,199 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 02:24:06,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:06,224 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2024-11-16 02:24:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:24:06,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) Word has length 18 [2024-11-16 02:24:06,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:06,225 INFO L225 Difference]: With dead ends: 45 [2024-11-16 02:24:06,225 INFO L226 Difference]: Without dead ends: 32 [2024-11-16 02:24:06,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:24:06,226 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:06,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:06,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-16 02:24:06,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2024-11-16 02:24:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 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 02:24:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-16 02:24:06,230 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2024-11-16 02:24:06,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:06,230 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-16 02:24:06,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 02:24:06,231 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-16 02:24:06,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 02:24:06,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:06,231 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:06,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 02:24:06,435 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 02:24:06,436 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:06,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:06,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1094780822, now seen corresponding path program 1 times [2024-11-16 02:24:06,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:06,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540514672] [2024-11-16 02:24:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:06,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:24:06,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:06,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540514672] [2024-11-16 02:24:06,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540514672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:06,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799145065] [2024-11-16 02:24:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:06,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:06,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:06,530 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 02:24:06,532 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 02:24:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:06,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:24:06,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:24:06,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:24:06,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799145065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:06,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:06,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 02:24:06,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603669020] [2024-11-16 02:24:06,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:06,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 02:24:06,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:06,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 02:24:06,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:24:06,625 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:06,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:06,637 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2024-11-16 02:24:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:24:06,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-16 02:24:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:06,638 INFO L225 Difference]: With dead ends: 56 [2024-11-16 02:24:06,639 INFO L226 Difference]: Without dead ends: 34 [2024-11-16 02:24:06,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:24:06,640 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:06,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:06,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-16 02:24:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-16 02:24:06,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-16 02:24:06,643 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 26 [2024-11-16 02:24:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:06,643 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-16 02:24:06,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-16 02:24:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-16 02:24:06,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:06,644 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:06,657 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 02:24:06,844 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 02:24:06,845 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:06,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:06,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1678577127, now seen corresponding path program 2 times [2024-11-16 02:24:06,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:06,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341426790] [2024-11-16 02:24:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:06,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 02:24:06,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:06,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341426790] [2024-11-16 02:24:06,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341426790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:06,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246068196] [2024-11-16 02:24:06,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:24:06,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:06,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:06,925 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 02:24:06,926 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 02:24:06,993 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:24:06,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:06,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:24:06,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:24:07,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:24:07,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246068196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:07,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:07,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-16 02:24:07,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439884396] [2024-11-16 02:24:07,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:07,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:24:07,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:07,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:24:07,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:24:07,121 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 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) [2024-11-16 02:24:07,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:07,288 INFO L93 Difference]: Finished difference Result 80 states and 101 transitions. [2024-11-16 02:24:07,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 02:24:07,288 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 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 32 [2024-11-16 02:24:07,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:07,289 INFO L225 Difference]: With dead ends: 80 [2024-11-16 02:24:07,289 INFO L226 Difference]: Without dead ends: 58 [2024-11-16 02:24:07,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2024-11-16 02:24:07,290 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:07,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 136 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:24:07,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-16 02:24:07,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-11-16 02:24:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.150943396226415) internal successors, (61), 53 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) [2024-11-16 02:24:07,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2024-11-16 02:24:07,296 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 32 [2024-11-16 02:24:07,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:07,296 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2024-11-16 02:24:07,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 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) [2024-11-16 02:24:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2024-11-16 02:24:07,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 02:24:07,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:07,297 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:07,309 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 02:24:07,498 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 02:24:07,498 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:07,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:07,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1764773791, now seen corresponding path program 3 times [2024-11-16 02:24:07,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:07,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832395286] [2024-11-16 02:24:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:07,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:07,792 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:24:07,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:07,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832395286] [2024-11-16 02:24:07,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832395286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:07,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658743698] [2024-11-16 02:24:07,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:24:07,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:07,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:07,796 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 02:24:07,804 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 02:24:07,870 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 02:24:07,870 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:07,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 02:24:07,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:08,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:24:08,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2024-11-16 02:24:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-16 02:24:08,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-16 02:24:08,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658743698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:08,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:08,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 25 [2024-11-16 02:24:08,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943492861] [2024-11-16 02:24:08,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:08,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 02:24:08,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:08,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 02:24:08,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:24:08,270 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:12,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:24:16,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:24:21,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:24:26,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:24:30,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:24:35,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:24:38,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 02:24:38,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:38,352 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2024-11-16 02:24:38,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-16 02:24:38,356 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-16 02:24:38,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:38,357 INFO L225 Difference]: With dead ends: 116 [2024-11-16 02:24:38,357 INFO L226 Difference]: Without dead ends: 86 [2024-11-16 02:24:38,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 02:24:38,358 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 162 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 31 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.7s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:38,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 144 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 140 Invalid, 14 Unknown, 0 Unchecked, 29.7s Time] [2024-11-16 02:24:38,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-16 02:24:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 70. [2024-11-16 02:24:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.173913043478261) internal successors, (81), 69 states have internal predecessors, (81), 0 states have call successors, (0), 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 02:24:38,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2024-11-16 02:24:38,367 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 52 [2024-11-16 02:24:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:38,367 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2024-11-16 02:24:38,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.04) internal successors, (76), 25 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:38,369 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2024-11-16 02:24:38,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 02:24:38,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:38,370 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:38,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:24:38,572 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 02:24:38,572 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:38,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:38,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1343004417, now seen corresponding path program 1 times [2024-11-16 02:24:38,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:38,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351502991] [2024-11-16 02:24:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:38,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:24:38,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:38,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351502991] [2024-11-16 02:24:38,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351502991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:38,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968288505] [2024-11-16 02:24:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:38,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:38,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:38,799 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 02:24:38,800 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 02:24:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:38,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 02:24:38,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:24:38,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:24:39,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968288505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:39,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:39,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-11-16 02:24:39,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281689674] [2024-11-16 02:24:39,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:39,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 02:24:39,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:39,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 02:24:39,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-16 02:24:39,158 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand has 27 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:39,192 INFO L93 Difference]: Finished difference Result 140 states and 174 transitions. [2024-11-16 02:24:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-16 02:24:39,193 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-16 02:24:39,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:39,193 INFO L225 Difference]: With dead ends: 140 [2024-11-16 02:24:39,193 INFO L226 Difference]: Without dead ends: 96 [2024-11-16 02:24:39,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-16 02:24:39,194 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:39,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:39,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-16 02:24:39,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-16 02:24:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.1263157894736842) internal successors, (107), 95 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2024-11-16 02:24:39,202 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 54 [2024-11-16 02:24:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:39,202 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2024-11-16 02:24:39,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.7037037037037037) internal successors, (73), 27 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:24:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2024-11-16 02:24:39,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 02:24:39,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:39,204 INFO L215 NwaCegarLoop]: trace histogram [25, 24, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:39,217 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 02:24:39,404 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 02:24:39,405 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:39,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:39,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1169286450, now seen corresponding path program 2 times [2024-11-16 02:24:39,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:39,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331670433] [2024-11-16 02:24:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:39,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:24:39,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331670433] [2024-11-16 02:24:39,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331670433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114793242] [2024-11-16 02:24:39,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:24:39,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:39,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:39,972 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 02:24:39,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:24:40,061 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:24:40,061 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:40,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-16 02:24:40,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:24:40,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:24:40,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114793242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:40,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:40,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2024-11-16 02:24:40,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457612668] [2024-11-16 02:24:40,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:40,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-16 02:24:40,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:40,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-16 02:24:40,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-11-16 02:24:40,864 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand has 53 states, 53 states have (on average 2.358490566037736) internal successors, (125), 53 states have internal predecessors, (125), 0 states have call successors, (0), 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 02:24:40,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:40,923 INFO L93 Difference]: Finished difference Result 192 states and 239 transitions. [2024-11-16 02:24:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-16 02:24:40,923 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.358490566037736) internal successors, (125), 53 states have internal predecessors, (125), 0 states have call successors, (0), 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 80 [2024-11-16 02:24:40,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:40,924 INFO L225 Difference]: With dead ends: 192 [2024-11-16 02:24:40,924 INFO L226 Difference]: Without dead ends: 148 [2024-11-16 02:24:40,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-11-16 02:24:40,926 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:40,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:24:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-16 02:24:40,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-16 02:24:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0816326530612246) internal successors, (159), 147 states have internal predecessors, (159), 0 states have call successors, (0), 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 02:24:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 159 transitions. [2024-11-16 02:24:40,944 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 159 transitions. Word has length 80 [2024-11-16 02:24:40,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:40,945 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 159 transitions. [2024-11-16 02:24:40,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.358490566037736) internal successors, (125), 53 states have internal predecessors, (125), 0 states have call successors, (0), 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 02:24:40,945 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 159 transitions. [2024-11-16 02:24:40,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-16 02:24:40,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:40,946 INFO L215 NwaCegarLoop]: trace histogram [51, 50, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:40,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:24:41,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:41,147 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:41,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:41,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2058330200, now seen corresponding path program 3 times [2024-11-16 02:24:41,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:41,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446683754] [2024-11-16 02:24:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:41,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:42,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2566 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 02:24:42,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:42,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446683754] [2024-11-16 02:24:42,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446683754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:42,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881349341] [2024-11-16 02:24:42,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:24:42,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:42,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:42,927 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:42,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:24:43,013 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 02:24:43,013 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:43,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:24:43,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2566 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2558 trivial. 0 not checked. [2024-11-16 02:24:43,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2566 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2558 trivial. 0 not checked. [2024-11-16 02:24:43,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881349341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:43,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:43,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 5, 5] total 59 [2024-11-16 02:24:43,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004971584] [2024-11-16 02:24:43,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:43,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-16 02:24:43,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:43,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-16 02:24:43,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=2017, Unknown=0, NotChecked=0, Total=3422 [2024-11-16 02:24:43,167 INFO L87 Difference]: Start difference. First operand 148 states and 159 transitions. Second operand has 59 states, 59 states have (on average 2.6271186440677967) internal successors, (155), 59 states have internal predecessors, (155), 0 states have call successors, (0), 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 02:24:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:44,311 INFO L93 Difference]: Finished difference Result 269 states and 319 transitions. [2024-11-16 02:24:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-16 02:24:44,312 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.6271186440677967) internal successors, (155), 59 states have internal predecessors, (155), 0 states have call successors, (0), 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 132 [2024-11-16 02:24:44,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:44,314 INFO L225 Difference]: With dead ends: 269 [2024-11-16 02:24:44,314 INFO L226 Difference]: Without dead ends: 225 [2024-11-16 02:24:44,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4414, Invalid=7576, Unknown=0, NotChecked=0, Total=11990 [2024-11-16 02:24:44,318 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 487 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:44,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 191 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:24:44,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-16 02:24:44,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 198. [2024-11-16 02:24:44,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.1218274111675126) internal successors, (221), 197 states have internal predecessors, (221), 0 states have call successors, (0), 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 02:24:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2024-11-16 02:24:44,331 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 132 [2024-11-16 02:24:44,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:44,332 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2024-11-16 02:24:44,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.6271186440677967) internal successors, (155), 59 states have internal predecessors, (155), 0 states have call successors, (0), 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 02:24:44,332 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2024-11-16 02:24:44,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-16 02:24:44,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:44,333 INFO L215 NwaCegarLoop]: trace histogram [52, 51, 7, 7, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:44,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 02:24:44,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:44,538 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:44,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:44,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1593691351, now seen corresponding path program 4 times [2024-11-16 02:24:44,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:44,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940033159] [2024-11-16 02:24:44,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:44,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2796 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-16 02:24:46,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:46,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940033159] [2024-11-16 02:24:46,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940033159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:46,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018677465] [2024-11-16 02:24:46,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:24:46,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:46,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:46,208 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:46,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:24:46,359 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:24:46,359 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:24:46,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:24:46,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:24:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2796 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 2724 trivial. 0 not checked. [2024-11-16 02:24:46,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:24:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2796 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 2724 trivial. 0 not checked. [2024-11-16 02:24:46,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018677465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:24:46,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:24:46,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 9, 9] total 68 [2024-11-16 02:24:46,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821755470] [2024-11-16 02:24:46,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:24:46,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-16 02:24:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:24:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-16 02:24:46,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1550, Invalid=3006, Unknown=0, NotChecked=0, Total=4556 [2024-11-16 02:24:46,887 INFO L87 Difference]: Start difference. First operand 198 states and 221 transitions. Second operand has 68 states, 68 states have (on average 2.75) internal successors, (187), 68 states have internal predecessors, (187), 0 states have call successors, (0), 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 02:24:48,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:24:48,030 INFO L93 Difference]: Finished difference Result 439 states and 541 transitions. [2024-11-16 02:24:48,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-16 02:24:48,033 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.75) internal successors, (187), 68 states have internal predecessors, (187), 0 states have call successors, (0), 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 166 [2024-11-16 02:24:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:24:48,036 INFO L225 Difference]: With dead ends: 439 [2024-11-16 02:24:48,036 INFO L226 Difference]: Without dead ends: 347 [2024-11-16 02:24:48,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2040 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5086, Invalid=9194, Unknown=0, NotChecked=0, Total=14280 [2024-11-16 02:24:48,040 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 194 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:24:48,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 210 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:24:48,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-16 02:24:48,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 296. [2024-11-16 02:24:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.1627118644067798) internal successors, (343), 295 states have internal predecessors, (343), 0 states have call successors, (0), 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 02:24:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 343 transitions. [2024-11-16 02:24:48,055 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 343 transitions. Word has length 166 [2024-11-16 02:24:48,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:24:48,055 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 343 transitions. [2024-11-16 02:24:48,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.75) internal successors, (187), 68 states have internal predecessors, (187), 0 states have call successors, (0), 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 02:24:48,055 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 343 transitions. [2024-11-16 02:24:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-16 02:24:48,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:24:48,061 INFO L215 NwaCegarLoop]: trace histogram [53, 52, 15, 15, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:24:48,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 02:24:48,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 02:24:48,262 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:24:48,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:24:48,262 INFO L85 PathProgramCache]: Analyzing trace with hash 412828822, now seen corresponding path program 5 times [2024-11-16 02:24:48,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:24:48,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154484095] [2024-11-16 02:24:48,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:24:48,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:24:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:24:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-11-16 02:24:50,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:24:50,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154484095] [2024-11-16 02:24:50,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154484095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:24:50,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123607234] [2024-11-16 02:24:50,044 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:24:50,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:24:50,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:24:50,046 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:24:50,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process