./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_vardep_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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/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-crafted/recursified_simple_vardep_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 3d10641017a78060218b50f4d70d792898ed2d8ba6a3470f582f96f045a08878 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 03:43:02,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 03:43:02,305 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 03:43:02,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 03:43:02,311 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 03:43:02,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 03:43:02,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 03:43:02,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 03:43:02,343 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 03:43:02,346 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 03:43:02,347 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 03:43:02,347 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 03:43:02,347 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 03:43:02,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 03:43:02,348 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 03:43:02,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 03:43:02,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 03:43:02,349 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 03:43:02,351 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 03:43:02,351 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 03:43:02,351 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 03:43:02,352 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 03:43:02,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 03:43:02,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 03:43:02,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 03:43:02,353 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 03:43:02,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 03:43:02,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 03:43:02,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 03:43:02,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 03:43:02,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 03:43:02,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 03:43:02,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:43:02,356 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 03:43:02,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 03:43:02,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 03:43:02,357 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 03:43:02,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 03:43:02,358 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 03:43:02,358 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 03:43:02,359 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 03:43:02,359 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 03:43:02,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d10641017a78060218b50f4d70d792898ed2d8ba6a3470f582f96f045a08878 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 03:43:02,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 03:43:02,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 03:43:02,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 03:43:02,643 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 03:43:02,643 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 03:43:02,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_vardep_1.c [2024-09-13 03:43:03,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 03:43:04,191 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 03:43:04,191 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_vardep_1.c [2024-09-13 03:43:04,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/af30dbabf/4a1e2601790149439d938ddc750b8426/FLAG8cdc698c8 [2024-09-13 03:43:04,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/af30dbabf/4a1e2601790149439d938ddc750b8426 [2024-09-13 03:43:04,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 03:43:04,223 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 03:43:04,227 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 03:43:04,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 03:43:04,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 03:43:04,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760956fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04, skipping insertion in model container [2024-09-13 03:43:04,237 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,260 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 03:43:04,455 WARN L247 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-crafted/recursified_simple_vardep_1.c[1113,1126] [2024-09-13 03:43:04,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:43:04,516 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 03:43:04,538 WARN L247 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-crafted/recursified_simple_vardep_1.c[1113,1126] [2024-09-13 03:43:04,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:43:04,563 INFO L204 MainTranslator]: Completed translation [2024-09-13 03:43:04,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04 WrapperNode [2024-09-13 03:43:04,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 03:43:04,565 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 03:43:04,565 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 03:43:04,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 03:43:04,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,579 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,586 INFO L138 Inliner]: procedures = 14, calls = 29, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 03:43:04,587 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 03:43:04,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 03:43:04,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 03:43:04,588 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 03:43:04,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,604 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,624 INFO L175 MemorySlicer]: Split 15 memory accesses to 4 slices as follows [2, 4, 5, 4]. 33 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [2, 1, 1, 1]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-09-13 03:43:04,624 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,634 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,644 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 03:43:04,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 03:43:04,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 03:43:04,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 03:43:04,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04" (1/1) ... [2024-09-13 03:43:04,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:43:04,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:43:04,683 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) [2024-09-13 03:43:04,686 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 [2024-09-13 03:43:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 03:43:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 03:43:04,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 03:43:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 03:43:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-13 03:43:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-13 03:43:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-13 03:43:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 03:43:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-13 03:43:04,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-13 03:43:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-13 03:43:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-13 03:43:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 03:43:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 03:43:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 03:43:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 03:43:04,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-13 03:43:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-13 03:43:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-13 03:43:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-13 03:43:04,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 03:43:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 03:43:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_25_0 [2024-09-13 03:43:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_25_0 [2024-09-13 03:43:04,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 03:43:04,825 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 03:43:04,827 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 03:43:04,970 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-09-13 03:43:04,970 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 03:43:04,989 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 03:43:04,989 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 03:43:04,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:43:04 BoogieIcfgContainer [2024-09-13 03:43:04,990 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 03:43:04,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 03:43:04,992 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 03:43:04,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 03:43:04,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 03:43:04" (1/3) ... [2024-09-13 03:43:04,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13930865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:43:04, skipping insertion in model container [2024-09-13 03:43:04,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:43:04" (2/3) ... [2024-09-13 03:43:04,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13930865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:43:04, skipping insertion in model container [2024-09-13 03:43:04,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:43:04" (3/3) ... [2024-09-13 03:43:04,998 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_simple_vardep_1.c [2024-09-13 03:43:05,011 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 03:43:05,011 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 03:43:05,069 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 03:43:05,075 INFO L336 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;@40aab49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 03:43:05,075 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 03:43:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 03:43:05,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-13 03:43:05,088 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:43:05,089 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:43:05,089 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:43:05,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:43:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1671296621, now seen corresponding path program 1 times [2024-09-13 03:43:05,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:43:05,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010777205] [2024-09-13 03:43:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:43:05,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:43:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:43:06,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:43:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:43:06,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:43:06,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:43:06,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010777205] [2024-09-13 03:43:06,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010777205] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:43:06,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:43:06,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-13 03:43:06,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739223363] [2024-09-13 03:43:06,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:43:06,303 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 03:43:06,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:43:06,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 03:43:06,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-13 03:43:06,330 INFO L87 Difference]: Start difference. First operand has 23 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 03:43:06,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:43:06,486 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2024-09-13 03:43:06,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 03:43:06,489 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-13 03:43:06,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:43:06,495 INFO L225 Difference]: With dead ends: 51 [2024-09-13 03:43:06,495 INFO L226 Difference]: Without dead ends: 25 [2024-09-13 03:43:06,499 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-09-13 03:43:06,504 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:43:06,506 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 104 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:43:06,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-13 03:43:06,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-09-13 03:43:06,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 03:43:06,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-09-13 03:43:06,548 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 12 [2024-09-13 03:43:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:43:06,550 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2024-09-13 03:43:06,550 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 03:43:06,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:43:06,552 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-09-13 03:43:06,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-13 03:43:06,553 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:43:06,553 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:43:06,554 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 03:43:06,554 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:43:06,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:43:06,555 INFO L85 PathProgramCache]: Analyzing trace with hash 345612298, now seen corresponding path program 1 times [2024-09-13 03:43:06,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:43:06,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871591367] [2024-09-13 03:43:06,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:43:06,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:43:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:43:07,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:43:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:43:07,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 03:43:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:43:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:43:07,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:43:07,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871591367] [2024-09-13 03:43:07,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871591367] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:43:07,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212195923] [2024-09-13 03:43:07,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:43:07,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:43:07,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:43:07,655 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) [2024-09-13 03:43:07,657 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 03:43:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:43:08,059 WARN L260 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-09-13 03:43:08,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:43:08,287 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 [2024-09-13 03:43:08,306 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 [2024-09-13 03:43:08,321 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 [2024-09-13 03:43:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:43:08,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:43:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:43:09,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212195923] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:43:09,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:43:09,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 10] total 28 [2024-09-13 03:43:09,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869670989] [2024-09-13 03:43:09,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:43:09,270 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-13 03:43:09,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:43:09,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-13 03:43:09,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-09-13 03:43:09,276 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 28 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 20 states have internal predecessors, (33), 11 states have call successors, (14), 9 states have call predecessors, (14), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 03:43:09,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:43:09,748 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2024-09-13 03:43:09,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-13 03:43:09,749 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 20 states have internal predecessors, (33), 11 states have call successors, (14), 9 states have call predecessors, (14), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2024-09-13 03:43:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:43:09,750 INFO L225 Difference]: With dead ends: 30 [2024-09-13 03:43:09,750 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 03:43:09,751 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2024-09-13 03:43:09,752 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:43:09,752 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 99 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:43:09,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 03:43:09,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 03:43:09,753 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) [2024-09-13 03:43:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 03:43:09,753 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2024-09-13 03:43:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:43:09,753 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 03:43:09,754 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 20 states have internal predecessors, (33), 11 states have call successors, (14), 9 states have call predecessors, (14), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 03:43:09,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:43:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 03:43:09,754 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 03:43:09,757 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 03:43:09,775 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 03:43:09,961 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:43:09,965 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1] [2024-09-13 03:43:09,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 03:43:10,997 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 03:43:11,025 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] [2024-09-13 03:43:11,026 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~k!base,]]] [2024-09-13 03:43:11,026 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-13 03:43:11,026 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~i!base,]]] [2024-09-13 03:43:11,026 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] [2024-09-13 03:43:11,026 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~j!base,]]] [2024-09-13 03:43:11,027 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-13 03:43:11,027 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] [2024-09-13 03:43:11,027 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~k!base,]]] [2024-09-13 03:43:11,027 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-09-13 03:43:11,027 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~i!base,]]] [2024-09-13 03:43:11,028 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] [2024-09-13 03:43:11,028 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~j!base,]]] [2024-09-13 03:43:11,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 03:43:11 BoogieIcfgContainer [2024-09-13 03:43:11,028 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 03:43:11,029 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 03:43:11,029 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 03:43:11,029 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 03:43:11,030 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:43:04" (3/4) ... [2024-09-13 03:43:11,032 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 03:43:11,035 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 03:43:11,036 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 03:43:11,036 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-13 03:43:11,036 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_20_to_25_0 [2024-09-13 03:43:11,039 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-09-13 03:43:11,039 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-13 03:43:11,039 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 03:43:11,039 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 03:43:11,130 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 03:43:11,131 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 03:43:11,131 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 03:43:11,132 INFO L158 Benchmark]: Toolchain (without parser) took 6908.76ms. Allocated memory was 184.5MB in the beginning and 255.9MB in the end (delta: 71.3MB). Free memory was 114.8MB in the beginning and 102.6MB in the end (delta: 12.2MB). Peak memory consumption was 85.6MB. Max. memory is 16.1GB. [2024-09-13 03:43:11,132 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 03:43:11,132 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.54ms. Allocated memory is still 184.5MB. Free memory was 114.4MB in the beginning and 152.2MB in the end (delta: -37.7MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2024-09-13 03:43:11,133 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.50ms. Allocated memory is still 184.5MB. Free memory was 152.2MB in the beginning and 151.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 03:43:11,133 INFO L158 Benchmark]: Boogie Preprocessor took 58.78ms. Allocated memory is still 184.5MB. Free memory was 151.1MB in the beginning and 149.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 03:43:11,133 INFO L158 Benchmark]: RCFGBuilder took 342.91ms. Allocated memory is still 184.5MB. Free memory was 149.0MB in the beginning and 135.5MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 03:43:11,133 INFO L158 Benchmark]: TraceAbstraction took 6036.48ms. Allocated memory was 184.5MB in the beginning and 255.9MB in the end (delta: 71.3MB). Free memory was 134.4MB in the beginning and 106.8MB in the end (delta: 27.6MB). Peak memory consumption was 99.8MB. Max. memory is 16.1GB. [2024-09-13 03:43:11,134 INFO L158 Benchmark]: Witness Printer took 102.70ms. Allocated memory is still 255.9MB. Free memory was 106.8MB in the beginning and 102.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 03:43:11,135 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 184.5MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.54ms. Allocated memory is still 184.5MB. Free memory was 114.4MB in the beginning and 152.2MB in the end (delta: -37.7MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.50ms. Allocated memory is still 184.5MB. Free memory was 152.2MB in the beginning and 151.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.78ms. Allocated memory is still 184.5MB. Free memory was 151.1MB in the beginning and 149.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 342.91ms. Allocated memory is still 184.5MB. Free memory was 149.0MB in the beginning and 135.5MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6036.48ms. Allocated memory was 184.5MB in the beginning and 255.9MB in the end (delta: 71.3MB). Free memory was 134.4MB in the beginning and 106.8MB in the end (delta: 27.6MB). Peak memory consumption was 99.8MB. Max. memory is 16.1GB. * Witness Printer took 102.70ms. Allocated memory is still 255.9MB. Free memory was 106.8MB in the beginning and 102.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~k!base,]]] - 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~i!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#3,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#3,GLOBAL],[IdentifierExpression[#in~j!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~k!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~i!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#3,GLOBAL]],[IdentifierExpression[#in~j!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: 26]: 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 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 203 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 176 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 215 IncrementalHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 27 mSDtfsCounter, 215 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=1, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 71 ConstructedInterpolants, 11 QuantifiedInterpolants, 1028 SizeOfPredicates, 31 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 5/15 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 - ProcedureContractResult [Line: 20]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-13 03:43:11,164 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE