./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --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 34a8492e255374aad098e162859199083b5b90fe0eb733edf5e3563474d7ceaa --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 15:17:14,257 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 15:17:14,322 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 15:17:14,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 15:17:14,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 15:17:14,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 15:17:14,358 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 15:17:14,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 15:17:14,358 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 15:17:14,359 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 15:17:14,359 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 15:17:14,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 15:17:14,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 15:17:14,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 15:17:14,361 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 15:17:14,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 15:17:14,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 15:17:14,362 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 15:17:14,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 15:17:14,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 15:17:14,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 15:17:14,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 15:17:14,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 15:17:14,363 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 15:17:14,364 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 15:17:14,364 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 15:17:14,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 15:17:14,364 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 15:17:14,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 15:17:14,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 15:17:14,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 15:17:14,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 15:17:14,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:17:14,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 15:17:14,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 15:17:14,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 15:17:14,367 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 15:17:14,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 15:17:14,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 15:17:14,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 15:17:14,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 15:17:14,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 15:17:14,372 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34a8492e255374aad098e162859199083b5b90fe0eb733edf5e3563474d7ceaa Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 15:17:14,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 15:17:14,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 15:17:14,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 15:17:14,639 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 15:17:14,639 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 15:17:14,640 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c [2024-10-15 15:17:16,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 15:17:16,169 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 15:17:16,169 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c [2024-10-15 15:17:16,176 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/2e883b5f3/40cf56404a714d928aefad02bb50a072/FLAG8bf01abc9 [2024-10-15 15:17:16,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/2e883b5f3/40cf56404a714d928aefad02bb50a072 [2024-10-15 15:17:16,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 15:17:16,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 15:17:16,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 15:17:16,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 15:17:16,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 15:17:16,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35dd24c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16, skipping insertion in model container [2024-10-15 15:17:16,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,228 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 15:17:16,400 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c[1277,1290] [2024-10-15 15:17:16,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:17:16,418 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 15:17:16,430 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c[1277,1290] [2024-10-15 15:17:16,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:17:16,448 INFO L204 MainTranslator]: Completed translation [2024-10-15 15:17:16,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16 WrapperNode [2024-10-15 15:17:16,449 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 15:17:16,450 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 15:17:16,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 15:17:16,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 15:17:16,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,470 INFO L138 Inliner]: procedures = 12, calls = 18, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 15:17:16,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 15:17:16,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 15:17:16,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 15:17:16,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 15:17:16,479 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,491 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 2 writes are split as follows [0, 2]. [2024-10-15 15:17:16,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,492 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,498 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,499 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 15:17:16,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 15:17:16,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 15:17:16,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 15:17:16,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16" (1/1) ... [2024-10-15 15:17:16,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:17:16,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:17:16,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 15:17:16,539 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 15:17:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 15:17:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 15:17:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 15:17:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 15:17:16,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 15:17:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_19_to_19_0 [2024-10-15 15:17:16,585 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_19_to_19_0 [2024-10-15 15:17:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 15:17:16,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 15:17:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 15:17:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 15:17:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 15:17:16,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 15:17:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 15:17:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 15:17:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-15 15:17:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-15 15:17:16,661 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 15:17:16,665 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 15:17:16,883 INFO L? ?]: Removed 2 outVars from TransFormulas that were not future-live. [2024-10-15 15:17:16,884 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 15:17:16,919 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 15:17:16,919 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-15 15:17:16,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:17:16 BoogieIcfgContainer [2024-10-15 15:17:16,920 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 15:17:16,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 15:17:16,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 15:17:16,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 15:17:16,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:17:16" (1/3) ... [2024-10-15 15:17:16,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b55abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:17:16, skipping insertion in model container [2024-10-15 15:17:16,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:17:16" (2/3) ... [2024-10-15 15:17:16,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b55abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:17:16, skipping insertion in model container [2024-10-15 15:17:16,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:17:16" (3/3) ... [2024-10-15 15:17:16,928 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_1.c [2024-10-15 15:17:16,944 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 15:17:16,944 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 15:17:17,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 15:17:17,014 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=All, 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;@5fbf4c87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 15:17:17,014 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 15:17:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-15 15:17:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-15 15:17:17,026 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:17:17,027 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:17:17,027 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:17:17,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:17:17,033 INFO L85 PathProgramCache]: Analyzing trace with hash 640195126, now seen corresponding path program 1 times [2024-10-15 15:17:17,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:17:17,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765725442] [2024-10-15 15:17:17,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:17:17,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:17:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:17,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:17:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:17,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:17:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:17:17,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:17:17,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765725442] [2024-10-15 15:17:17,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765725442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:17:17,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:17:17,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-15 15:17:17,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988065584] [2024-10-15 15:17:17,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:17:17,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 15:17:17,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:17:17,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 15:17:17,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-15 15:17:17,571 INFO L87 Difference]: Start difference. First operand has 19 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 15:17:17,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:17:17,697 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2024-10-15 15:17:17,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 15:17:17,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-10-15 15:17:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:17:17,708 INFO L225 Difference]: With dead ends: 29 [2024-10-15 15:17:17,708 INFO L226 Difference]: Without dead ends: 17 [2024-10-15 15:17:17,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 15:17:17,717 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:17:17,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 45 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:17:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-15 15:17:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-15 15:17:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-15 15:17:17,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-10-15 15:17:17,762 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2024-10-15 15:17:17,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:17:17,763 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-15 15:17:17,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 15:17:17,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:17:17,765 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-10-15 15:17:17,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-15 15:17:17,767 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:17:17,767 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:17:17,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 15:17:17,768 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:17:17,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:17:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1526075367, now seen corresponding path program 1 times [2024-10-15 15:17:17,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:17:17,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581321254] [2024-10-15 15:17:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:17:17,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:17:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:18,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:17:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:18,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:17:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:18,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:17:18,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:17:18,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581321254] [2024-10-15 15:17:18,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581321254] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:17:18,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759042781] [2024-10-15 15:17:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:17:18,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:17:18,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:17:18,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:17:18,383 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 15:17:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:18,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-15 15:17:18,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:17:18,514 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 15 treesize of output 1 [2024-10-15 15:17:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:17:18,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:17:19,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:17:19,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759042781] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:17:19,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:17:19,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2024-10-15 15:17:19,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663013842] [2024-10-15 15:17:19,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:17:19,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-15 15:17:19,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:17:19,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-15 15:17:19,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-10-15 15:17:19,147 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 22 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 15:17:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:17:19,377 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-10-15 15:17:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 15:17:19,378 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) Word has length 18 [2024-10-15 15:17:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:17:19,378 INFO L225 Difference]: With dead ends: 25 [2024-10-15 15:17:19,379 INFO L226 Difference]: Without dead ends: 21 [2024-10-15 15:17:19,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2024-10-15 15:17:19,380 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:17:19,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 51 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:17:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-15 15:17:19,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-15 15:17:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-15 15:17:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-10-15 15:17:19,387 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2024-10-15 15:17:19,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:17:19,388 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-10-15 15:17:19,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 15:17:19,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:17:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-10-15 15:17:19,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-15 15:17:19,389 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:17:19,390 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:17:19,408 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 15:17:19,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:17:19,591 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:17:19,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:17:19,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1370930293, now seen corresponding path program 2 times [2024-10-15 15:17:19,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:17:19,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949702993] [2024-10-15 15:17:19,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:17:19,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:17:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:19,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:17:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:19,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:17:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:20,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:20,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:20,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-15 15:17:20,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:17:20,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949702993] [2024-10-15 15:17:20,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949702993] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:17:20,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801187649] [2024-10-15 15:17:20,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:17:20,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:17:20,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:17:20,394 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:17:20,396 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 15:17:20,458 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:17:20,458 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:17:20,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-10-15 15:17:20,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:17:20,472 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 15 treesize of output 1 [2024-10-15 15:17:20,779 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 25 treesize of output 13 [2024-10-15 15:17:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 15:17:20,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:17:21,461 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 16 treesize of output 8 [2024-10-15 15:17:33,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801187649] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:17:33,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 15:17:33,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2024-10-15 15:17:33,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528915085] [2024-10-15 15:17:33,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 15:17:33,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-15 15:17:33,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:17:33,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-15 15:17:33,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=640, Unknown=3, NotChecked=0, Total=756 [2024-10-15 15:17:33,847 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 6 states have call successors, (7), 2 states have call predecessors, (7), 9 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-15 15:17:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:17:34,133 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-10-15 15:17:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 15:17:34,134 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 6 states have call successors, (7), 2 states have call predecessors, (7), 9 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) Word has length 28 [2024-10-15 15:17:34,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:17:34,135 INFO L225 Difference]: With dead ends: 29 [2024-10-15 15:17:34,135 INFO L226 Difference]: Without dead ends: 25 [2024-10-15 15:17:34,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=169, Invalid=950, Unknown=3, NotChecked=0, Total=1122 [2024-10-15 15:17:34,137 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:17:34,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 88 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:17:34,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-15 15:17:34,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-10-15 15:17:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-15 15:17:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-10-15 15:17:34,152 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 28 [2024-10-15 15:17:34,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:17:34,153 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-10-15 15:17:34,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 6 states have call successors, (7), 2 states have call predecessors, (7), 9 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-15 15:17:34,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:17:34,155 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-10-15 15:17:34,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-15 15:17:34,155 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:17:34,156 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:17:34,176 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 15:17:34,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:17:34,356 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:17:34,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:17:34,357 INFO L85 PathProgramCache]: Analyzing trace with hash -812892675, now seen corresponding path program 3 times [2024-10-15 15:17:34,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:17:34,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572453016] [2024-10-15 15:17:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:17:34,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:17:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:34,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:17:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:34,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:17:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:35,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:35,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:35,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:35,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:35,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-15 15:17:35,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:17:35,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572453016] [2024-10-15 15:17:35,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572453016] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:17:35,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075721798] [2024-10-15 15:17:35,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 15:17:35,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:17:35,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:17:35,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:17:35,625 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 15:17:35,701 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-15 15:17:35,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:17:35,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-10-15 15:17:35,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:17:35,719 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 15 treesize of output 1 [2024-10-15 15:17:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-15 15:17:36,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:17:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:17:38,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075721798] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:17:38,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:17:38,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 26] total 44 [2024-10-15 15:17:38,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757161172] [2024-10-15 15:17:38,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:17:38,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-15 15:17:38,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:17:38,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-15 15:17:38,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1540, Unknown=0, NotChecked=0, Total=1892 [2024-10-15 15:17:38,054 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 12 states have call successors, (13), 8 states have call predecessors, (13), 14 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) [2024-10-15 15:17:38,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:17:38,423 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-10-15 15:17:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-15 15:17:38,423 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 12 states have call successors, (13), 8 states have call predecessors, (13), 14 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) Word has length 38 [2024-10-15 15:17:38,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:17:38,424 INFO L225 Difference]: With dead ends: 31 [2024-10-15 15:17:38,424 INFO L226 Difference]: Without dead ends: 27 [2024-10-15 15:17:38,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=481, Invalid=2069, Unknown=0, NotChecked=0, Total=2550 [2024-10-15 15:17:38,426 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:17:38,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 135 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:17:38,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-15 15:17:38,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-10-15 15:17:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-15 15:17:38,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-10-15 15:17:38,445 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 38 [2024-10-15 15:17:38,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:17:38,445 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-10-15 15:17:38,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 12 states have call successors, (13), 8 states have call predecessors, (13), 14 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) [2024-10-15 15:17:38,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:17:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-10-15 15:17:38,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-15 15:17:38,447 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:17:38,448 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:17:38,465 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 15:17:38,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:17:38,652 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:17:38,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:17:38,653 INFO L85 PathProgramCache]: Analyzing trace with hash -715334516, now seen corresponding path program 4 times [2024-10-15 15:17:38,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:17:38,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875848722] [2024-10-15 15:17:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:17:38,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:17:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:38,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:17:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:38,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:17:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:38,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:39,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:39,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:39,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:39,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:39,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-15 15:17:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:17:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-15 15:17:39,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:17:39,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875848722] [2024-10-15 15:17:39,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875848722] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:17:39,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250993954] [2024-10-15 15:17:39,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 15:17:39,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:17:39,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:17:39,354 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:17:39,375 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 15:17:39,456 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 15:17:39,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:17:39,462 WARN L253 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-10-15 15:17:39,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:17:39,479 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 15 treesize of output 1 [2024-10-15 15:17:39,838 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 [2024-10-15 15:17:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 5 proven. 53 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-15 15:17:39,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:17:40,814 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 16 treesize of output 8 [2024-10-15 15:17:41,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250993954] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:17:41,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 15:17:41,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 22 [2024-10-15 15:17:41,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854054233] [2024-10-15 15:17:41,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 15:17:41,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-15 15:17:41,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:17:41,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-15 15:17:41,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-10-15 15:17:41,273 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (11), 10 states have call predecessors, (11), 6 states have call successors, (11) [2024-10-15 15:17:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:17:41,673 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-10-15 15:17:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-15 15:17:41,674 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (11), 10 states have call predecessors, (11), 6 states have call successors, (11) Word has length 43 [2024-10-15 15:17:41,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:17:41,675 INFO L225 Difference]: With dead ends: 29 [2024-10-15 15:17:41,675 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 15:17:41,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2024-10-15 15:17:41,676 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:17:41,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 115 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:17:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 15:17:41,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 15:17:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-10-15 15:17:41,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 15:17:41,678 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2024-10-15 15:17:41,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:17:41,678 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 15:17:41,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (11), 10 states have call predecessors, (11), 6 states have call successors, (11) [2024-10-15 15:17:41,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:17:41,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 15:17:41,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 15:17:41,681 INFO L782 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 15:17:41,695 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 15:17:41,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:17:41,888 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1] [2024-10-15 15:17:41,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 15:17:42,410 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 15:17:42,420 WARN L156 FloydHoareUtils]: Requires clause for func_to_recursive_line_19_to_19_0 contained old-variable. Original clause: (= |#memory_int#1| |old(#memory_int#1)|) Eliminated clause: true [2024-10-15 15:17:42,428 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-15 15:17:42,429 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-10-15 15:17:42,429 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-10-15 15:17:42,430 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-15 15:17:42,431 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-15 15:17:42,431 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-15 15:17:42,431 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-10-15 15:17:42,431 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-10-15 15:17:42,432 WARN L156 FloydHoareUtils]: Requires clause for main contained old-variable. Original clause: (= |#memory_int#1| |old(#memory_int#1)|) Eliminated clause: true [2024-10-15 15:17:42,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:17:42 BoogieIcfgContainer [2024-10-15 15:17:42,434 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 15:17:42,435 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 15:17:42,435 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 15:17:42,435 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 15:17:42,437 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:17:16" (3/4) ... [2024-10-15 15:17:42,439 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 15:17:42,487 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-10-15 15:17:42,488 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 15:17:42,488 INFO L158 Benchmark]: Toolchain (without parser) took 26292.08ms. Allocated memory was 157.3MB in the beginning and 237.0MB in the end (delta: 79.7MB). Free memory was 120.5MB in the beginning and 162.8MB in the end (delta: -42.3MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2024-10-15 15:17:42,489 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 157.3MB. Free memory was 121.6MB in the beginning and 121.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:17:42,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.64ms. Allocated memory is still 157.3MB. Free memory was 120.5MB in the beginning and 108.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 15:17:42,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.19ms. Allocated memory is still 157.3MB. Free memory was 108.5MB in the beginning and 107.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:17:42,490 INFO L158 Benchmark]: Boogie Preprocessor took 29.25ms. Allocated memory is still 157.3MB. Free memory was 107.2MB in the beginning and 105.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:17:42,490 INFO L158 Benchmark]: RCFGBuilder took 419.10ms. Allocated memory is still 157.3MB. Free memory was 105.9MB in the beginning and 125.0MB in the end (delta: -19.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 15:17:42,490 INFO L158 Benchmark]: TraceAbstraction took 25512.25ms. Allocated memory was 157.3MB in the beginning and 237.0MB in the end (delta: 79.7MB). Free memory was 124.1MB in the beginning and 164.9MB in the end (delta: -40.8MB). Peak memory consumption was 137.3MB. Max. memory is 16.1GB. [2024-10-15 15:17:42,490 INFO L158 Benchmark]: Witness Printer took 53.10ms. Allocated memory is still 237.0MB. Free memory was 164.9MB in the beginning and 162.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:17:42,492 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 157.3MB. Free memory was 121.6MB in the beginning and 121.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.64ms. Allocated memory is still 157.3MB. Free memory was 120.5MB in the beginning and 108.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.19ms. Allocated memory is still 157.3MB. Free memory was 108.5MB in the beginning and 107.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.25ms. Allocated memory is still 157.3MB. Free memory was 107.2MB in the beginning and 105.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 419.10ms. Allocated memory is still 157.3MB. Free memory was 105.9MB in the beginning and 125.0MB in the end (delta: -19.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 25512.25ms. Allocated memory was 157.3MB in the beginning and 237.0MB in the end (delta: 79.7MB). Free memory was 124.1MB in the beginning and 164.9MB in the end (delta: -40.8MB). Peak memory consumption was 137.3MB. Max. memory is 16.1GB. * Witness Printer took 53.10ms. Allocated memory is still 237.0MB. Free memory was 164.9MB in the beginning and 162.8MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] * 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 - PositiveResult [Line: 48]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.9s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 434 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 370 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 807 IncrementalHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 64 mSDtfsCounter, 807 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 172 SyntacticMatches, 6 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 14.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 21.9s InterpolantComputationTime, 267 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 312 ConstructedInterpolants, 0 QuantifiedInterpolants, 2958 SizeOfPredicates, 44 NumberOfNonLiveVariables, 542 ConjunctsInSsa, 244 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 235/474 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-15 15:17:42,519 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE