./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s2iff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/s2iff.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c2c79fc7da9b912a6d0a49c4075c07cb5e82cc2dc05ee24d0b572e0ac73f733 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 00:48:53,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 00:48:53,235 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 00:48:53,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 00:48:53,243 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 00:48:53,263 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 00:48:53,265 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 00:48:53,265 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 00:48:53,265 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 00:48:53,265 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 00:48:53,266 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 00:48:53,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 00:48:53,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 00:48:53,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 00:48:53,266 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 00:48:53,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 00:48:53,267 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:48:53,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 00:48:53,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 00:48:53,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 00:48:53,268 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 00:48:53,268 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 00:48:53,268 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 00:48:53,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 00:48:53,268 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 3c2c79fc7da9b912a6d0a49c4075c07cb5e82cc2dc05ee24d0b572e0ac73f733 [2025-03-08 00:48:53,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 00:48:53,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 00:48:53,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 00:48:53,481 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 00:48:53,481 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 00:48:53,481 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s2iff.c [2025-03-08 00:48:54,554 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711ed7148/c6df5297ce13447fb02a66ef5442dd90/FLAG129a8f5e9 [2025-03-08 00:48:54,777 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 00:48:54,779 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s2iff.c [2025-03-08 00:48:54,792 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711ed7148/c6df5297ce13447fb02a66ef5442dd90/FLAG129a8f5e9 [2025-03-08 00:48:55,124 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711ed7148/c6df5297ce13447fb02a66ef5442dd90 [2025-03-08 00:48:55,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 00:48:55,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 00:48:55,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 00:48:55,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 00:48:55,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 00:48:55,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a8f2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55, skipping insertion in model container [2025-03-08 00:48:55,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,141 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 00:48:55,243 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s2iff.c[588,601] [2025-03-08 00:48:55,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:48:55,269 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 00:48:55,277 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s2iff.c[588,601] [2025-03-08 00:48:55,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:48:55,298 INFO L204 MainTranslator]: Completed translation [2025-03-08 00:48:55,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55 WrapperNode [2025-03-08 00:48:55,300 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 00:48:55,301 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 00:48:55,302 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 00:48:55,302 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 00:48:55,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,325 INFO L138 Inliner]: procedures = 17, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2025-03-08 00:48:55,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 00:48:55,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 00:48:55,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 00:48:55,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 00:48:55,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,335 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,345 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 8, 4, 6]. 40 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 4 writes are split as follows [0, 0, 1, 3]. [2025-03-08 00:48:55,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,349 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 00:48:55,353 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 00:48:55,353 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 00:48:55,353 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 00:48:55,354 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55" (1/1) ... [2025-03-08 00:48:55,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:48:55,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:48:55,376 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) [2025-03-08 00:48:55,380 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 [2025-03-08 00:48:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 00:48:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 00:48:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 00:48:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 00:48:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 00:48:55,440 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 00:48:55,442 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 00:48:55,536 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#sum~0#1.base, main_~#sum~0#1.offset);havoc main_~#sum~0#1.base, main_~#sum~0#1.offset; [2025-03-08 00:48:55,540 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-08 00:48:55,540 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 00:48:55,545 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 00:48:55,546 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 00:48:55,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:48:55 BoogieIcfgContainer [2025-03-08 00:48:55,546 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 00:48:55,548 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 00:48:55,548 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 00:48:55,551 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 00:48:55,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 12:48:55" (1/3) ... [2025-03-08 00:48:55,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51161708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:48:55, skipping insertion in model container [2025-03-08 00:48:55,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:48:55" (2/3) ... [2025-03-08 00:48:55,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51161708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:48:55, skipping insertion in model container [2025-03-08 00:48:55,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:48:55" (3/3) ... [2025-03-08 00:48:55,553 INFO L128 eAbstractionObserver]: Analyzing ICFG s2iff.c [2025-03-08 00:48:55,563 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 00:48:55,568 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG s2iff.c that has 1 procedures, 16 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-08 00:48:55,599 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 00:48:55,606 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;@22b6a83d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 00:48:55,606 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 00:48:55,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:48:55,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 00:48:55,611 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:48:55,612 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:48:55,612 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:48:55,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:48:55,615 INFO L85 PathProgramCache]: Analyzing trace with hash -673256721, now seen corresponding path program 1 times [2025-03-08 00:48:55,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:48:55,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064666063] [2025-03-08 00:48:55,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:48:55,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:48:55,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 00:48:55,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 00:48:55,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:48:55,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:48:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:55,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:48:55,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064666063] [2025-03-08 00:48:55,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064666063] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:48:55,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:48:55,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 00:48:55,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611654303] [2025-03-08 00:48:55,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:48:55,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 00:48:55,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:48:55,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 00:48:55,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 00:48:55,734 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2025-03-08 00:48:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:48:55,741 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2025-03-08 00:48:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 00:48:55,742 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2025-03-08 00:48:55,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:48:55,746 INFO L225 Difference]: With dead ends: 28 [2025-03-08 00:48:55,746 INFO L226 Difference]: Without dead ends: 12 [2025-03-08 00:48:55,748 INFO L434 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 [2025-03-08 00:48:55,749 INFO L435 NwaCegarLoop]: 19 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, 19 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 [2025-03-08 00:48:55,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:48:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-03-08 00:48:55,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-03-08 00:48:55,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:48:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2025-03-08 00:48:55,768 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2025-03-08 00:48:55,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:48:55,768 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2025-03-08 00:48:55,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2025-03-08 00:48:55,769 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2025-03-08 00:48:55,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 00:48:55,769 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:48:55,769 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:48:55,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 00:48:55,769 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:48:55,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:48:55,770 INFO L85 PathProgramCache]: Analyzing trace with hash -644627570, now seen corresponding path program 1 times [2025-03-08 00:48:55,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:48:55,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994312553] [2025-03-08 00:48:55,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:48:55,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:48:55,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 00:48:55,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 00:48:55,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:48:55,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:48:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:55,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:48:55,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994312553] [2025-03-08 00:48:55,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994312553] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:48:55,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:48:55,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 00:48:55,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145072106] [2025-03-08 00:48:55,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:48:55,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 00:48:55,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:48:55,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 00:48:55,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:48:55,881 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-03-08 00:48:55,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:48:55,914 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2025-03-08 00:48:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 00:48:55,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2025-03-08 00:48:55,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:48:55,915 INFO L225 Difference]: With dead ends: 22 [2025-03-08 00:48:55,915 INFO L226 Difference]: Without dead ends: 16 [2025-03-08 00:48:55,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:48:55,917 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:48:55,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 9 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:48:55,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-03-08 00:48:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2025-03-08 00:48:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2025-03-08 00:48:55,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-03-08 00:48:55,922 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2025-03-08 00:48:55,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:48:55,923 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-03-08 00:48:55,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-03-08 00:48:55,923 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-03-08 00:48:55,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-08 00:48:55,923 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:48:55,923 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:48:55,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 00:48:55,924 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:48:55,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:48:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash 380854543, now seen corresponding path program 1 times [2025-03-08 00:48:55,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:48:55,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681793541] [2025-03-08 00:48:55,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:48:55,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:48:55,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 00:48:55,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 00:48:55,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:48:55,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:48:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:56,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:48:56,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681793541] [2025-03-08 00:48:56,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681793541] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:48:56,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335931641] [2025-03-08 00:48:56,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:48:56,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:48:56,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:48:56,412 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) [2025-03-08 00:48:56,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 00:48:56,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 00:48:56,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 00:48:56,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:48:56,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:48:56,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-08 00:48:56,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:48:56,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-08 00:48:56,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-03-08 00:48:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:56,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:48:56,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:56,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335931641] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:48:56,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:48:56,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-03-08 00:48:56,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796231892] [2025-03-08 00:48:56,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:48:56,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-08 00:48:56,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:48:56,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-08 00:48:56,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2025-03-08 00:48:56,746 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 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) [2025-03-08 00:48:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:48:56,915 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2025-03-08 00:48:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 00:48:56,916 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 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) Word has length 13 [2025-03-08 00:48:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:48:56,916 INFO L225 Difference]: With dead ends: 24 [2025-03-08 00:48:56,916 INFO L226 Difference]: Without dead ends: 21 [2025-03-08 00:48:56,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2025-03-08 00:48:56,917 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:48:56,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 26 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:48:56,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-03-08 00:48:56,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2025-03-08 00:48:56,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:48:56,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-03-08 00:48:56,920 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 13 [2025-03-08 00:48:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:48:56,920 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-03-08 00:48:56,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 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) [2025-03-08 00:48:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-03-08 00:48:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-08 00:48:56,921 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:48:56,921 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:48:56,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 00:48:57,125 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 [2025-03-08 00:48:57,125 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:48:57,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:48:57,125 INFO L85 PathProgramCache]: Analyzing trace with hash 381778064, now seen corresponding path program 1 times [2025-03-08 00:48:57,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:48:57,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57643065] [2025-03-08 00:48:57,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:48:57,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:48:57,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 00:48:57,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 00:48:57,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:48:57,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:48:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:57,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:48:57,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57643065] [2025-03-08 00:48:57,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57643065] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:48:57,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131827700] [2025-03-08 00:48:57,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:48:57,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:48:57,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:48:57,295 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) [2025-03-08 00:48:57,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 00:48:57,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 00:48:57,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 00:48:57,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:48:57,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:48:57,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-08 00:48:57,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:48:57,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-08 00:48:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:57,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:48:57,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-03-08 00:48:57,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-03-08 00:48:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:57,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131827700] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:48:57,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:48:57,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-03-08 00:48:57,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597113477] [2025-03-08 00:48:57,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:48:57,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 00:48:57,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:48:57,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 00:48:57,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-08 00:48:57,406 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:48:57,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:48:57,445 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2025-03-08 00:48:57,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 00:48:57,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-08 00:48:57,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:48:57,445 INFO L225 Difference]: With dead ends: 27 [2025-03-08 00:48:57,445 INFO L226 Difference]: Without dead ends: 21 [2025-03-08 00:48:57,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-03-08 00:48:57,446 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:48:57,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 38 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:48:57,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-03-08 00:48:57,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2025-03-08 00:48:57,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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) [2025-03-08 00:48:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-03-08 00:48:57,449 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2025-03-08 00:48:57,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:48:57,449 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-03-08 00:48:57,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:48:57,449 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-03-08 00:48:57,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-08 00:48:57,450 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:48:57,450 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:48:57,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 00:48:57,654 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 [2025-03-08 00:48:57,654 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:48:57,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:48:57,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1610116533, now seen corresponding path program 2 times [2025-03-08 00:48:57,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:48:57,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683626590] [2025-03-08 00:48:57,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:48:57,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:48:57,661 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-08 00:48:57,667 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 00:48:57,667 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:48:57,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:48:57,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:57,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:48:57,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683626590] [2025-03-08 00:48:57,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683626590] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:48:57,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068463933] [2025-03-08 00:48:57,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:48:57,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:48:57,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:48:57,716 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) [2025-03-08 00:48:57,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 00:48:57,748 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-08 00:48:57,760 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 00:48:57,761 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:48:57,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:48:57,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 00:48:57,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:48:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:57,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:48:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:57,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068463933] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:48:57,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:48:57,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-03-08 00:48:57,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465136191] [2025-03-08 00:48:57,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:48:57,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 00:48:57,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:48:57,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 00:48:57,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-03-08 00:48:57,832 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:48:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:48:57,907 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2025-03-08 00:48:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 00:48:57,907 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-08 00:48:57,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:48:57,908 INFO L225 Difference]: With dead ends: 27 [2025-03-08 00:48:57,908 INFO L226 Difference]: Without dead ends: 24 [2025-03-08 00:48:57,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2025-03-08 00:48:57,909 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:48:57,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 26 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:48:57,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-03-08 00:48:57,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 17. [2025-03-08 00:48:57,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:48:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2025-03-08 00:48:57,912 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2025-03-08 00:48:57,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:48:57,912 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2025-03-08 00:48:57,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:48:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2025-03-08 00:48:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-08 00:48:57,912 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:48:57,912 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:48:57,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 00:48:58,112 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 [2025-03-08 00:48:58,113 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:48:58,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:48:58,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1147567788, now seen corresponding path program 3 times [2025-03-08 00:48:58,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:48:58,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815799568] [2025-03-08 00:48:58,113 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:48:58,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:48:58,122 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 3 equivalence classes. [2025-03-08 00:48:58,135 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 00:48:58,136 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-08 00:48:58,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:48:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:58,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:48:58,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815799568] [2025-03-08 00:48:58,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815799568] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:48:58,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465614157] [2025-03-08 00:48:58,201 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:48:58,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:48:58,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:48:58,204 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) [2025-03-08 00:48:58,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 00:48:58,245 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 3 equivalence classes. [2025-03-08 00:48:58,260 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 00:48:58,260 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-08 00:48:58,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:48:58,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 00:48:58,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:48:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:58,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:48:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:48:58,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465614157] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:48:58,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:48:58,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-03-08 00:48:58,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501723560] [2025-03-08 00:48:58,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:48:58,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 00:48:58,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:48:58,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 00:48:58,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-08 00:48:58,331 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 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) [2025-03-08 00:48:58,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:48:58,384 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2025-03-08 00:48:58,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 00:48:58,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 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) Word has length 16 [2025-03-08 00:48:58,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:48:58,385 INFO L225 Difference]: With dead ends: 30 [2025-03-08 00:48:58,386 INFO L226 Difference]: Without dead ends: 20 [2025-03-08 00:48:58,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-03-08 00:48:58,387 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:48:58,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 27 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:48:58,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-03-08 00:48:58,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2025-03-08 00:48:58,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2025-03-08 00:48:58,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2025-03-08 00:48:58,393 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 16 [2025-03-08 00:48:58,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:48:58,393 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2025-03-08 00:48:58,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 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) [2025-03-08 00:48:58,393 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2025-03-08 00:48:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-08 00:48:58,393 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:48:58,393 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:48:58,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 00:48:58,594 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 [2025-03-08 00:48:58,594 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:48:58,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:48:58,595 INFO L85 PathProgramCache]: Analyzing trace with hash 905210606, now seen corresponding path program 4 times [2025-03-08 00:48:58,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:48:58,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113784581] [2025-03-08 00:48:58,595 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:48:58,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:48:58,608 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-03-08 00:48:58,620 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 00:48:58,620 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 00:48:58,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 00:48:58,621 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 00:48:58,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 00:48:58,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 00:48:58,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:48:58,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 00:48:58,648 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 00:48:58,648 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 00:48:58,649 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 00:48:58,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 00:48:58,653 INFO L422 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2025-03-08 00:48:58,672 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 00:48:58,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 12:48:58 BoogieIcfgContainer [2025-03-08 00:48:58,675 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 00:48:58,676 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 00:48:58,676 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 00:48:58,676 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 00:48:58,677 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:48:55" (3/4) ... [2025-03-08 00:48:58,678 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-08 00:48:58,712 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 15. [2025-03-08 00:48:58,756 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 00:48:58,759 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 00:48:58,759 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 00:48:58,760 INFO L158 Benchmark]: Toolchain (without parser) took 3633.43ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 99.1MB in the end (delta: 22.9MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2025-03-08 00:48:58,760 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 00:48:58,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.44ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 110.7MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 00:48:58,760 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.07ms. Allocated memory is still 167.8MB. Free memory was 110.7MB in the beginning and 109.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 00:48:58,761 INFO L158 Benchmark]: Boogie Preprocessor took 25.39ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 108.0MB in the end (delta: 949.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 00:48:58,761 INFO L158 Benchmark]: IcfgBuilder took 193.45ms. Allocated memory is still 167.8MB. Free memory was 108.0MB in the beginning and 94.8MB in the end (delta: 13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 00:48:58,761 INFO L158 Benchmark]: TraceAbstraction took 3127.67ms. Allocated memory is still 167.8MB. Free memory was 94.8MB in the beginning and 104.6MB in the end (delta: -9.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 00:48:58,761 INFO L158 Benchmark]: Witness Printer took 83.37ms. Allocated memory is still 167.8MB. Free memory was 104.6MB in the beginning and 99.1MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 00:48:58,762 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.44ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 110.7MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.07ms. Allocated memory is still 167.8MB. Free memory was 110.7MB in the beginning and 109.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.39ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 108.0MB in the end (delta: 949.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 193.45ms. Allocated memory is still 167.8MB. Free memory was 108.0MB in the beginning and 94.8MB in the end (delta: 13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3127.67ms. Allocated memory is still 167.8MB. Free memory was 94.8MB in the beginning and 104.6MB in the end (delta: -9.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 83.37ms. Allocated memory is still 167.8MB. Free memory was 104.6MB in the beginning and 99.1MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [N=2] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [N=2, a={-1:0}, i=0, sum={9:0}] [L32] COND TRUE i