./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s4iff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/s4iff.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 aa44544cef56565ed3319ce5058689b3bfab54966d5ccdccfbe58cd92a919183 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:28:28,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:28:28,306 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:28:28,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:28:28,315 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:28:28,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:28:28,348 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:28:28,348 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:28:28,348 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:28:28,349 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:28:28,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:28:28,350 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:28:28,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:28:28,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:28:28,355 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:28:28,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:28:28,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:28:28,356 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:28:28,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:28:28,364 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:28:28,365 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:28:28,365 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:28:28,365 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:28:28,366 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:28:28,366 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:28:28,366 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:28:28,366 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:28:28,367 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:28:28,367 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:28:28,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:28:28,368 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:28:28,368 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:28:28,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:28:28,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:28:28,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:28:28,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:28:28,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:28:28,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:28:28,370 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:28:28,370 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:28:28,370 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:28:28,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:28:28,371 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa44544cef56565ed3319ce5058689b3bfab54966d5ccdccfbe58cd92a919183 [2024-11-09 18:28:28,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:28:28,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:28:28,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:28:28,670 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:28:28,670 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:28:28,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s4iff.c [2024-11-09 18:28:30,109 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:28:30,309 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:28:30,310 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s4iff.c [2024-11-09 18:28:30,321 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d0abf0d6/9ab2cad476334288b01cf5d50917a56a/FLAG790a8edd6 [2024-11-09 18:28:30,333 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d0abf0d6/9ab2cad476334288b01cf5d50917a56a [2024-11-09 18:28:30,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:28:30,336 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:28:30,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:28:30,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:28:30,344 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:28:30,345 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bcdc2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30, skipping insertion in model container [2024-11-09 18:28:30,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,368 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:28:30,543 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/s4iff.c[588,601] [2024-11-09 18:28:30,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:28:30,575 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:28:30,584 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/s4iff.c[588,601] [2024-11-09 18:28:30,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:28:30,607 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:28:30,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30 WrapperNode [2024-11-09 18:28:30,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:28:30,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:28:30,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:28:30,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:28:30,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,641 INFO L138 Inliner]: procedures = 17, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2024-11-09 18:28:30,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:28:30,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:28:30,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:28:30,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:28:30,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,654 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,672 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]. [2024-11-09 18:28:30,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,682 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,682 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,684 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,684 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,686 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:28:30,687 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:28:30,687 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:28:30,687 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:28:30,688 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30" (1/1) ... [2024-11-09 18:28:30,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:28:30,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:30,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 18:28:30,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 18:28:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:28:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:28:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:28:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 18:28:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 18:28:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:28:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:28:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:28:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 18:28:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 18:28:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 18:28:30,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:28:30,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:28:30,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:28:30,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:28:30,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 18:28:30,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 18:28:30,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:28:30,856 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:28:30,859 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:28:30,992 INFO L1247 $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; [2024-11-09 18:28:31,004 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-09 18:28:31,004 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:28:31,015 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:28:31,016 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:28:31,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:28:31 BoogieIcfgContainer [2024-11-09 18:28:31,017 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:28:31,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:28:31,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:28:31,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:28:31,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:28:30" (1/3) ... [2024-11-09 18:28:31,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e431c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:28:31, skipping insertion in model container [2024-11-09 18:28:31,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:28:30" (2/3) ... [2024-11-09 18:28:31,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e431c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:28:31, skipping insertion in model container [2024-11-09 18:28:31,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:28:31" (3/3) ... [2024-11-09 18:28:31,026 INFO L112 eAbstractionObserver]: Analyzing ICFG s4iff.c [2024-11-09 18:28:31,040 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:28:31,040 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:28:31,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:28:31,098 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;@68b9ea3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:28:31,098 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:28:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.45) internal successors, (29), 21 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) [2024-11-09 18:28:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 18:28:31,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:31,109 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:31,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:31,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:31,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2136143925, now seen corresponding path program 1 times [2024-11-09 18:28:31,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:31,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410383453] [2024-11-09 18:28:31,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:31,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:31,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:31,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410383453] [2024-11-09 18:28:31,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410383453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:28:31,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:28:31,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:28:31,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786972884] [2024-11-09 18:28:31,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:28:31,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:28:31,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:31,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:28:31,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:28:31,385 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.45) internal successors, (29), 21 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:31,400 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2024-11-09 18:28:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:28:31,402 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2024-11-09 18:28:31,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:31,409 INFO L225 Difference]: With dead ends: 39 [2024-11-09 18:28:31,409 INFO L226 Difference]: Without dead ends: 17 [2024-11-09 18:28:31,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:28:31,418 INFO L432 NwaCegarLoop]: 24 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, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:31,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:28:31,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-09 18:28:31,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-09 18:28:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:31,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-09 18:28:31,452 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2024-11-09 18:28:31,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:31,452 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-09 18:28:31,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:31,453 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-09 18:28:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 18:28:31,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:31,455 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:31,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:28:31,456 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:31,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:31,457 INFO L85 PathProgramCache]: Analyzing trace with hash 164193969, now seen corresponding path program 1 times [2024-11-09 18:28:31,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:31,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661341729] [2024-11-09 18:28:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:31,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:31,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:31,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661341729] [2024-11-09 18:28:31,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661341729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:28:31,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:28:31,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:28:31,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170577540] [2024-11-09 18:28:31,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:28:31,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:28:31,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:31,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:28:31,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:28:31,637 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:31,694 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-11-09 18:28:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:28:31,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 18:28:31,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:31,696 INFO L225 Difference]: With dead ends: 33 [2024-11-09 18:28:31,696 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 18:28:31,697 INFO L431 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 [2024-11-09 18:28:31,699 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:31,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 16 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:28:31,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 18:28:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-11-09 18:28:31,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 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) [2024-11-09 18:28:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-09 18:28:31,707 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2024-11-09 18:28:31,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:31,708 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-09 18:28:31,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:31,708 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-09 18:28:31,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 18:28:31,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:31,709 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:31,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:28:31,710 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:31,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:31,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1719376912, now seen corresponding path program 1 times [2024-11-09 18:28:31,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:31,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223849423] [2024-11-09 18:28:31,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:31,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:32,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:32,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223849423] [2024-11-09 18:28:32,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223849423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:32,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113386729] [2024-11-09 18:28:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:32,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:32,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:32,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:32,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:28:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:32,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 18:28:32,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:32,612 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 [2024-11-09 18:28:32,780 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 [2024-11-09 18:28:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:32,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:33,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113386729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:33,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:33,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2024-11-09 18:28:33,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746698862] [2024-11-09 18:28:33,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:33,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 18:28:33,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:33,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 18:28:33,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:28:33,020 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:33,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:33,326 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-09 18:28:33,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:28:33,326 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 18:28:33,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:33,327 INFO L225 Difference]: With dead ends: 38 [2024-11-09 18:28:33,328 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 18:28:33,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2024-11-09 18:28:33,329 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:33,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 77 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:28:33,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 18:28:33,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2024-11-09 18:28:33,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-09 18:28:33,335 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2024-11-09 18:28:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:33,336 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-09 18:28:33,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-09 18:28:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 18:28:33,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:33,337 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:33,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:28:33,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:33,538 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:33,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:33,539 INFO L85 PathProgramCache]: Analyzing trace with hash 23433423, now seen corresponding path program 1 times [2024-11-09 18:28:33,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:33,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707536391] [2024-11-09 18:28:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:33,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:33,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:33,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707536391] [2024-11-09 18:28:33,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707536391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:33,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299809981] [2024-11-09 18:28:33,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:33,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:33,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:33,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:33,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:28:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:33,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 18:28:33,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:33,825 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 [2024-11-09 18:28:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:33,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:33,884 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 [2024-11-09 18:28:33,888 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 [2024-11-09 18:28:33,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:33,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299809981] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:33,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:33,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-09 18:28:33,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628521411] [2024-11-09 18:28:33,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:33,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 18:28:33,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:33,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 18:28:33,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 18:28:33,904 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:33,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:33,957 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-09 18:28:33,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 18:28:33,958 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 18:28:33,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:33,959 INFO L225 Difference]: With dead ends: 41 [2024-11-09 18:28:33,959 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 18:28:33,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:28:33,960 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:33,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 62 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:28:33,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 18:28:33,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-11-09 18:28:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:33,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-09 18:28:33,966 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 20 [2024-11-09 18:28:33,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:33,967 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-09 18:28:33,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:33,967 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-09 18:28:33,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 18:28:33,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:33,969 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:33,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:34,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 18:28:34,172 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:34,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:34,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1841783055, now seen corresponding path program 2 times [2024-11-09 18:28:34,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:34,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234116159] [2024-11-09 18:28:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:34,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:34,257 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:34,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:34,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234116159] [2024-11-09 18:28:34,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234116159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:34,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325343177] [2024-11-09 18:28:34,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:28:34,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:34,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:34,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:34,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:28:34,337 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:28:34,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:34,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:28:34,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:34,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:34,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325343177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:34,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:34,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 18:28:34,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14262735] [2024-11-09 18:28:34,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:34,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 18:28:34,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:34,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 18:28:34,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:28:34,451 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 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) [2024-11-09 18:28:34,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:34,561 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-11-09 18:28:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 18:28:34,562 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 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) Word has length 22 [2024-11-09 18:28:34,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:34,562 INFO L225 Difference]: With dead ends: 41 [2024-11-09 18:28:34,562 INFO L226 Difference]: Without dead ends: 36 [2024-11-09 18:28:34,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:28:34,564 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:34,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 72 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:34,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-09 18:28:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 25. [2024-11-09 18:28:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 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) [2024-11-09 18:28:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-11-09 18:28:34,569 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2024-11-09 18:28:34,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:34,569 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-11-09 18:28:34,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 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) [2024-11-09 18:28:34,569 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-09 18:28:34,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 18:28:34,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:34,570 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:34,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 18:28:34,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:34,775 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:34,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:34,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1645716078, now seen corresponding path program 3 times [2024-11-09 18:28:34,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:34,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870478918] [2024-11-09 18:28:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:34,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:28:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:34,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:28:34,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870478918] [2024-11-09 18:28:34,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870478918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:28:34,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218271166] [2024-11-09 18:28:34,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:28:34,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:34,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:28:34,851 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:28:34,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:28:34,918 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:28:34,919 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:28:34,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:28:34,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:28:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:34,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:28:35,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:28:35,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218271166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:28:35,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:28:35,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 18:28:35,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586639932] [2024-11-09 18:28:35,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:28:35,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 18:28:35,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:28:35,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 18:28:35,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:28:35,024 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:35,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:28:35,099 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-11-09 18:28:35,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 18:28:35,100 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 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) Word has length 24 [2024-11-09 18:28:35,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:28:35,101 INFO L225 Difference]: With dead ends: 45 [2024-11-09 18:28:35,101 INFO L226 Difference]: Without dead ends: 29 [2024-11-09 18:28:35,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-09 18:28:35,102 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:28:35,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:28:35,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-09 18:28:35,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-09 18:28:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:35,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-09 18:28:35,113 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2024-11-09 18:28:35,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:28:35,113 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-09 18:28:35,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:28:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-09 18:28:35,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 18:28:35,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:28:35,114 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:28:35,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:28:35,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:28:35,315 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:28:35,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:28:35,315 INFO L85 PathProgramCache]: Analyzing trace with hash 541357295, now seen corresponding path program 4 times [2024-11-09 18:28:35,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:28:35,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371807508] [2024-11-09 18:28:35,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:28:35,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:28:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 18:28:35,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 18:28:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 18:28:35,379 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 18:28:35,380 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 18:28:35,381 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 18:28:35,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 18:28:35,387 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2024-11-09 18:28:35,413 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 18:28:35,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:28:35 BoogieIcfgContainer [2024-11-09 18:28:35,415 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 18:28:35,416 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 18:28:35,416 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 18:28:35,416 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 18:28:35,416 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:28:31" (3/4) ... [2024-11-09 18:28:35,417 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 18:28:35,460 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 18:28:35,460 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 18:28:35,460 INFO L158 Benchmark]: Toolchain (without parser) took 5124.11ms. Allocated memory was 172.0MB in the beginning and 226.5MB in the end (delta: 54.5MB). Free memory was 117.3MB in the beginning and 120.3MB in the end (delta: -3.0MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. [2024-11-09 18:28:35,460 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 172.0MB. Free memory is still 137.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 18:28:35,461 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.24ms. Allocated memory is still 172.0MB. Free memory was 116.9MB in the beginning and 103.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 18:28:35,461 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.88ms. Allocated memory is still 172.0MB. Free memory was 103.5MB in the beginning and 101.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 18:28:35,461 INFO L158 Benchmark]: Boogie Preprocessor took 44.09ms. Allocated memory is still 172.0MB. Free memory was 101.8MB in the beginning and 100.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 18:28:35,461 INFO L158 Benchmark]: IcfgBuilder took 329.52ms. Allocated memory is still 172.0MB. Free memory was 99.7MB in the beginning and 86.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 18:28:35,462 INFO L158 Benchmark]: TraceAbstraction took 4396.50ms. Allocated memory was 172.0MB in the beginning and 226.5MB in the end (delta: 54.5MB). Free memory was 85.9MB in the beginning and 122.4MB in the end (delta: -36.5MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2024-11-09 18:28:35,462 INFO L158 Benchmark]: Witness Printer took 44.02ms. Allocated memory is still 226.5MB. Free memory was 122.4MB in the beginning and 120.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 18:28:35,467 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 172.0MB. Free memory is still 137.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.24ms. Allocated memory is still 172.0MB. Free memory was 116.9MB in the beginning and 103.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.88ms. Allocated memory is still 172.0MB. Free memory was 103.5MB in the beginning and 101.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.09ms. Allocated memory is still 172.0MB. Free memory was 101.8MB in the beginning and 100.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 329.52ms. Allocated memory is still 172.0MB. Free memory was 99.7MB in the beginning and 86.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4396.50ms. Allocated memory was 172.0MB in the beginning and 226.5MB in the end (delta: 54.5MB). Free memory was 85.9MB in the beginning and 122.4MB in the end (delta: -36.5MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * Witness Printer took 44.02ms. Allocated memory is still 226.5MB. Free memory was 122.4MB in the beginning and 120.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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={10:0}] [L32] COND TRUE i