./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/mod3.c.v+sep-reducer.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/referee/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/referee/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/referee/data -tc /storage/repos/certificate-witnesses-artifact/referee/config/RefereeReachWitnessValidation.xml -i ../sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c ../results/automizer-verification-files/SV-COMP24_unreach-call/mod3.c.v+sep-reducer.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:05:56,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:05:56,544 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-15 20:05:56,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:05:56,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:05:56,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:05:56,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:05:56,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:05:56,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:05:56,579 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:05:56,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:05:56,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:05:56,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:05:56,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:05:56,581 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:05:56,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:05:56,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:05:56,583 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:05:56,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:05:56,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:05:56,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:05:56,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:05:56,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:05:56,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:05:56,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:05:56,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:05:56,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:05:56,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:05:56,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:05:56,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:05:56,590 INFO L153 SettingsManager]: * Future-live optimization=false [2024-09-15 20:05:56,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:05:56,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:05:56,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:05:56,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:05:56,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:05:56,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:05:56,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:05:56,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:05:56,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:05:56,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:05:56,596 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:05:56,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:05:56,596 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/referee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:05:56,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:05:56,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:05:56,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:05:56,875 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:05:56,876 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:05:56,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c [2024-09-15 20:05:58,379 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:05:58,592 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:05:58,595 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c [2024-09-15 20:05:58,605 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/31fe83d25/52dd4c26700a48e9963ab2e8af5848b8/FLAGdadb33ab4 [2024-09-15 20:05:58,624 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/31fe83d25/52dd4c26700a48e9963ab2e8af5848b8 [2024-09-15 20:05:58,626 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:05:58,628 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:05:58,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/mod3.c.v+sep-reducer.yml/witness-2.1.yml [2024-09-15 20:05:58,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:05:58,688 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-15 20:05:58,690 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:05:58,690 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:05:58,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:05:58,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:05:58" (1/2) ... [2024-09-15 20:05:58,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:05:58, skipping insertion in model container [2024-09-15 20:05:58,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:05:58" (1/2) ... [2024-09-15 20:05:58,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ce4cf7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:05:58, skipping insertion in model container [2024-09-15 20:05:58,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:05:58" (2/2) ... [2024-09-15 20:05:58,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d0e2 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:05:58, skipping insertion in model container [2024-09-15 20:05:58,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:05:58" (2/2) ... [2024-09-15 20:05:58,710 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:05:58,713 INFO L1541 ArrayList]: Location invariant before [L36-L112] ((((2 * (main__x / 4294967296)) + main__x) % 3) < 1) [2024-09-15 20:05:58,713 INFO L1541 ArrayList]: Location invariant before [L42-L42] ((((2 * (main__x / 4294967296)) + main__x) % 3) < 1) [2024-09-15 20:05:58,713 INFO L1541 ArrayList]: Location invariant before [L24-L141] ((((2 * (main__x / 4294967296)) + main__x) % 3) < 1) [2024-09-15 20:05:58,736 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:05:58,900 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/loop-industry-pattern/mod3.c.v+sep-reducer.c[2057,2070] [2024-09-15 20:05:58,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:05:58,930 INFO L200 MainTranslator]: Completed pre-run Start Parsing Local [2024-09-15 20:05:58,987 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/loop-industry-pattern/mod3.c.v+sep-reducer.c[2057,2070] Start Parsing Local Start Parsing Local [2024-09-15 20:05:58,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:05:59,028 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:05:59,028 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:05:59 WrapperNode [2024-09-15 20:05:59,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:05:59,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:05:59,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:05:59,030 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:05:59,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:05:59" (1/1) ... [2024-09-15 20:05:59,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:05:59" (1/1) ... [2024-09-15 20:05:59,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:05:59" (1/1) ... [2024-09-15 20:05:59,124 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-15 20:05:59,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:05:59" (1/1) ... [2024-09-15 20:05:59,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:05:59" (1/1) ... [2024-09-15 20:05:59,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:05:59" (1/1) ... [2024-09-15 20:05:59,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:05:59" (1/1) ... [2024-09-15 20:05:59,141 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:05:59" (1/1) ... [2024-09-15 20:05:59,142 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:05:59" (1/1) ... [2024-09-15 20:05:59,147 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:05:59,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:05:59,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:05:59,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:05:59,150 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:05:59" (1/1) ... [2024-09-15 20:05:59,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:05:59,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-15 20:05:59,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 20:05:59,188 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 20:05:59,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 20:05:59,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:05:59,233 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-15 20:05:59,233 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 20:05:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-15 20:05:59,233 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-15 20:05:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-15 20:05:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:05:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-15 20:05:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 20:05:59,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 20:05:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 20:05:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 20:05:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:05:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-15 20:05:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-15 20:05:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-15 20:05:59,304 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:05:59,308 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:05:59,596 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:05:59,640 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:05:59,640 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-15 20:05:59,641 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:05:59 BoogieIcfgContainer [2024-09-15 20:05:59,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:05:59,646 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-15 20:05:59,646 INFO L270 PluginConnector]: Initializing Referee... [2024-09-15 20:05:59,647 INFO L274 PluginConnector]: Referee initialized [2024-09-15 20:05:59,647 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 15.09 08:05:58" (1/4) ... [2024-09-15 20:05:59,648 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@295d1993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 15.09 08:05:59, skipping insertion in model container [2024-09-15 20:05:59,648 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:05:58" (2/4) ... [2024-09-15 20:05:59,648 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@295d1993 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 15.09 08:05:59, skipping insertion in model container [2024-09-15 20:05:59,649 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:05:59" (3/4) ... [2024-09-15 20:05:59,649 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@295d1993 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 15.09 08:05:59, skipping insertion in model container [2024-09-15 20:05:59,649 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:05:59" (4/4) ... [2024-09-15 20:05:59,651 INFO L79 RefereeObserver]: Analyzing ICFG mod3.c.v+sep-reducer.c [2024-09-15 20:05:59,654 INFO L112 InvariantChecker]: Found 0 loops. [2024-09-15 20:05:59,655 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr2ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 26 edges. [2024-09-15 20:05:59,655 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr3ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 29 edges. [2024-09-15 20:05:59,656 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 26 edges. [2024-09-15 20:05:59,656 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr1ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 26 edges. [2024-09-15 20:05:59,657 INFO L130 InvariantChecker]: Will check 4 loop-free subgraphs from procedure entry to error location [2024-09-15 20:05:59,721 INFO L314 BlockEncoder]: Initial Icfg 20 locations, 26 edges [2024-09-15 20:05:59,721 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-15 20:05:59,722 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-15 20:05:59,722 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-15 20:05:59,725 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-15 20:05:59,727 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-15 20:05:59,848 INFO L101 BaseMinimizeStates]: Removed 62 edges and 16 locations by large block encoding [2024-09-15 20:05:59,850 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-15 20:05:59,850 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-15 20:05:59,850 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-15 20:05:59,851 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-15 20:05:59,879 INFO L314 BlockEncoder]: Encoded RCFG 4 locations, 7 edges [2024-09-15 20:05:59,895 INFO L314 BlockEncoder]: Initial Icfg 23 locations, 29 edges [2024-09-15 20:05:59,896 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-15 20:05:59,896 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-15 20:05:59,896 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-15 20:05:59,896 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-15 20:05:59,896 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-15 20:06:00,002 INFO L101 BaseMinimizeStates]: Removed 67 edges and 19 locations by large block encoding [2024-09-15 20:06:00,003 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-15 20:06:00,004 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-15 20:06:00,004 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-15 20:06:00,004 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-15 20:06:00,021 INFO L314 BlockEncoder]: Encoded RCFG 4 locations, 6 edges [2024-09-15 20:06:00,037 INFO L314 BlockEncoder]: Initial Icfg 20 locations, 26 edges [2024-09-15 20:06:00,038 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-15 20:06:00,038 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-15 20:06:00,038 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-15 20:06:00,038 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-15 20:06:00,038 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-15 20:06:00,115 INFO L101 BaseMinimizeStates]: Removed 65 edges and 16 locations by large block encoding [2024-09-15 20:06:00,115 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-15 20:06:00,116 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-15 20:06:00,116 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-15 20:06:00,116 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-15 20:06:00,140 INFO L314 BlockEncoder]: Encoded RCFG 4 locations, 8 edges [2024-09-15 20:06:00,141 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.referee has thrown an exception: java.lang.AssertionError: Either subgraph not acyclic or there is a bug at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AcyclicSubgraphMerger.(AcyclicSubgraphMerger.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.InvariantChecker.(InvariantChecker.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeStarter.(RefereeStarter.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver.finish(RefereeObserver.java:80) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-09-15 20:06:00,148 INFO L158 Benchmark]: Toolchain (without parser) took 1459.21ms. Allocated memory is still 157.3MB. Free memory was 84.8MB in the beginning and 85.7MB in the end (delta: -889.6kB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2024-09-15 20:06:00,149 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 157.3MB. Free memory is still 115.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:06:00,149 INFO L158 Benchmark]: Witness Parser took 1.57ms. Allocated memory is still 157.3MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:06:00,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.58ms. Allocated memory is still 157.3MB. Free memory was 84.6MB in the beginning and 128.3MB in the end (delta: -43.7MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2024-09-15 20:06:00,150 INFO L158 Benchmark]: Boogie Preprocessor took 118.25ms. Allocated memory is still 157.3MB. Free memory was 128.3MB in the beginning and 125.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-15 20:06:00,151 INFO L158 Benchmark]: RCFGBuilder took 496.67ms. Allocated memory is still 157.3MB. Free memory was 125.5MB in the beginning and 103.9MB in the end (delta: 21.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-09-15 20:06:00,152 INFO L158 Benchmark]: Referee took 500.93ms. Allocated memory is still 157.3MB. Free memory was 103.9MB in the beginning and 85.7MB in the end (delta: 18.1MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. [2024-09-15 20:06:00,156 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.referee: - ExceptionOrErrorResult: AssertionError: Either subgraph not acyclic or there is a bug de.uni_freiburg.informatik.ultimate.plugins.generator.referee: AssertionError: Either subgraph not acyclic or there is a bug: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AcyclicSubgraphMerger.(AcyclicSubgraphMerger.java:169) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 157.3MB. Free memory is still 115.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 1.57ms. Allocated memory is still 157.3MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.58ms. Allocated memory is still 157.3MB. Free memory was 84.6MB in the beginning and 128.3MB in the end (delta: -43.7MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 118.25ms. Allocated memory is still 157.3MB. Free memory was 128.3MB in the beginning and 125.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 496.67ms. Allocated memory is still 157.3MB. Free memory was 125.5MB in the beginning and 103.9MB in the end (delta: 21.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Referee took 500.93ms. Allocated memory is still 157.3MB. Free memory was 103.9MB in the beginning and 85.7MB in the end (delta: 18.1MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-15 20:06:00,189 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/referee/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/referee/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/referee/data -tc /storage/repos/certificate-witnesses-artifact/referee/config/RefereeReachWitnessValidation.xml -i ../sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c ../results/automizer-verification-files/SV-COMP24_unreach-call/mod3.c.v+sep-reducer.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Bitvector.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:06:02,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:06:02,450 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Bitvector.epf [2024-09-15 20:06:02,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:06:02,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:06:02,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:06:02,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:06:02,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:06:02,487 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:06:02,490 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:06:02,490 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:06:02,491 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:06:02,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:06:02,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:06:02,492 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:06:02,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:06:02,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:06:02,492 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:06:02,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:06:02,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:06:02,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:06:02,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:06:02,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:06:02,496 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-15 20:06:02,496 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-15 20:06:02,496 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:06:02,496 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-15 20:06:02,497 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:06:02,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:06:02,497 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:06:02,497 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:06:02,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:06:02,498 INFO L153 SettingsManager]: * Future-live optimization=false [2024-09-15 20:06:02,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:06:02,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:06:02,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:06:02,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:06:02,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:06:02,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:06:02,504 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-15 20:06:02,504 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-15 20:06:02,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:06:02,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:06:02,505 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:06:02,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:06:02,506 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-15 20:06:02,506 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/referee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:06:02,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:06:02,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:06:02,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:06:02,846 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:06:02,846 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:06:02,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/mod3.c.v+sep-reducer.yml/witness-2.1.yml [2024-09-15 20:06:02,901 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:06:02,902 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:06:02,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c [2024-09-15 20:06:04,388 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:06:04,578 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:06:04,579 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-industry-pattern/mod3.c.v+sep-reducer.c [2024-09-15 20:06:04,585 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/a624051f3/e7fd0efd500f4a2ca37b4730993fc2c9/FLAG1ceec014e [2024-09-15 20:06:04,603 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/a624051f3/e7fd0efd500f4a2ca37b4730993fc2c9 [2024-09-15 20:06:04,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:06:04,605 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-15 20:06:04,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:06:04,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:06:04,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:06:04,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:06:02" (1/2) ... [2024-09-15 20:06:04,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@138078a4 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:06:04, skipping insertion in model container [2024-09-15 20:06:04,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:06:02" (1/2) ... [2024-09-15 20:06:04,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1a615485 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:06:04, skipping insertion in model container [2024-09-15 20:06:04,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:06:04" (2/2) ... [2024-09-15 20:06:04,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@138078a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:04, skipping insertion in model container [2024-09-15 20:06:04,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:06:04" (2/2) ... [2024-09-15 20:06:04,631 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:06:04,632 INFO L1541 ArrayList]: Location invariant before [L42-L42] ((((2 * (main__x / 4294967296)) + main__x) % 3) < 1) [2024-09-15 20:06:04,632 INFO L1541 ArrayList]: Location invariant before [L36-L112] ((((2 * (main__x / 4294967296)) + main__x) % 3) < 1) [2024-09-15 20:06:04,633 INFO L1541 ArrayList]: Location invariant before [L24-L141] ((((2 * (main__x / 4294967296)) + main__x) % 3) < 1) [2024-09-15 20:06:04,662 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:06:04,836 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/loop-industry-pattern/mod3.c.v+sep-reducer.c[2057,2070] [2024-09-15 20:06:04,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:06:04,867 INFO L200 MainTranslator]: Completed pre-run Start Parsing Local [2024-09-15 20:06:04,919 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/loop-industry-pattern/mod3.c.v+sep-reducer.c[2057,2070] Start Parsing Local Start Parsing Local [2024-09-15 20:06:04,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:06:04,949 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:06:04,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:04 WrapperNode [2024-09-15 20:06:04,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:06:04,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:06:04,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:06:04,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:06:04,963 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:04" (1/1) ... [2024-09-15 20:06:04,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:04" (1/1) ... [2024-09-15 20:06:04,971 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:04" (1/1) ... [2024-09-15 20:06:04,990 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-15 20:06:04,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:04" (1/1) ... [2024-09-15 20:06:04,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:04" (1/1) ... [2024-09-15 20:06:05,002 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:04" (1/1) ... [2024-09-15 20:06:05,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:04" (1/1) ... [2024-09-15 20:06:05,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:04" (1/1) ... [2024-09-15 20:06:05,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:04" (1/1) ... [2024-09-15 20:06:05,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:06:05,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:06:05,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:06:05,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:06:05,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:04" (1/1) ... [2024-09-15 20:06:05,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:06:05,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-15 20:06:05,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 20:06:05,054 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 20:06:05,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 20:06:05,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:06:05,102 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-15 20:06:05,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 20:06:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-15 20:06:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-15 20:06:05,102 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-15 20:06:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:06:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-15 20:06:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 20:06:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 20:06:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 20:06:05,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-09-15 20:06:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:06:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-09-15 20:06:05,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-09-15 20:06:05,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-15 20:06:05,181 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:06:05,183 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:06:05,482 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:06:05,526 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:06:05,527 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-15 20:06:05,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:06:05 BoogieIcfgContainer [2024-09-15 20:06:05,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:06:05,528 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-15 20:06:05,528 INFO L270 PluginConnector]: Initializing Referee... [2024-09-15 20:06:05,530 INFO L274 PluginConnector]: Referee initialized [2024-09-15 20:06:05,530 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:06:02" (1/4) ... [2024-09-15 20:06:05,531 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@21532d63 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 15.09 08:06:05, skipping insertion in model container [2024-09-15 20:06:05,531 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 15.09 08:06:04" (2/4) ... [2024-09-15 20:06:05,531 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@21532d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 15.09 08:06:05, skipping insertion in model container [2024-09-15 20:06:05,532 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:06:04" (3/4) ... [2024-09-15 20:06:05,532 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@21532d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 15.09 08:06:05, skipping insertion in model container [2024-09-15 20:06:05,532 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:06:05" (4/4) ... [2024-09-15 20:06:05,533 INFO L79 RefereeObserver]: Analyzing ICFG mod3.c.v+sep-reducer.c [2024-09-15 20:06:05,537 INFO L112 InvariantChecker]: Found 0 loops. [2024-09-15 20:06:05,538 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr2ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 26 edges. [2024-09-15 20:06:05,538 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr3ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 29 edges. [2024-09-15 20:06:05,539 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 26 edges. [2024-09-15 20:06:05,539 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr1ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 26 edges. [2024-09-15 20:06:05,539 INFO L130 InvariantChecker]: Will check 4 loop-free subgraphs from procedure entry to error location [2024-09-15 20:06:05,609 INFO L314 BlockEncoder]: Initial Icfg 20 locations, 26 edges [2024-09-15 20:06:05,611 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-15 20:06:05,611 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-15 20:06:05,612 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-15 20:06:05,613 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-15 20:06:05,614 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-15 20:06:05,754 INFO L101 BaseMinimizeStates]: Removed 62 edges and 16 locations by large block encoding [2024-09-15 20:06:05,756 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-15 20:06:05,756 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-15 20:06:05,757 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-15 20:06:05,757 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-15 20:06:05,794 INFO L314 BlockEncoder]: Encoded RCFG 4 locations, 7 edges [2024-09-15 20:06:05,813 INFO L314 BlockEncoder]: Initial Icfg 23 locations, 29 edges [2024-09-15 20:06:05,813 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-15 20:06:05,813 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-15 20:06:05,814 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-15 20:06:05,814 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-15 20:06:05,814 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-15 20:06:05,894 INFO L101 BaseMinimizeStates]: Removed 67 edges and 19 locations by large block encoding [2024-09-15 20:06:05,894 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-15 20:06:05,895 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-15 20:06:05,895 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-15 20:06:05,895 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-15 20:06:05,917 INFO L314 BlockEncoder]: Encoded RCFG 4 locations, 6 edges [2024-09-15 20:06:05,933 INFO L314 BlockEncoder]: Initial Icfg 20 locations, 26 edges [2024-09-15 20:06:05,934 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-15 20:06:05,934 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-15 20:06:05,934 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-15 20:06:05,934 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-15 20:06:05,934 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-15 20:06:05,996 INFO L101 BaseMinimizeStates]: Removed 65 edges and 16 locations by large block encoding [2024-09-15 20:06:05,996 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-15 20:06:05,997 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-15 20:06:05,997 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-15 20:06:05,997 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-15 20:06:06,019 INFO L314 BlockEncoder]: Encoded RCFG 4 locations, 8 edges [2024-09-15 20:06:06,020 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.referee has thrown an exception: java.lang.AssertionError: Either subgraph not acyclic or there is a bug at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AcyclicSubgraphMerger.(AcyclicSubgraphMerger.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.InvariantChecker.(InvariantChecker.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeStarter.(RefereeStarter.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver.finish(RefereeObserver.java:80) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-09-15 20:06:06,025 INFO L158 Benchmark]: Toolchain (without parser) took 1419.50ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 34.1MB in the beginning and 58.1MB in the end (delta: -24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-09-15 20:06:06,026 INFO L158 Benchmark]: Witness Parser took 1.27ms. Allocated memory is still 54.5MB. Free memory is still 29.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:06:06,026 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 27.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:06:06,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.81ms. Allocated memory is still 67.1MB. Free memory was 34.0MB in the beginning and 35.6MB in the end (delta: -1.6MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2024-09-15 20:06:06,028 INFO L158 Benchmark]: Boogie Preprocessor took 63.51ms. Allocated memory is still 67.1MB. Free memory was 35.6MB in the beginning and 33.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:06:06,029 INFO L158 Benchmark]: RCFGBuilder took 511.07ms. Allocated memory is still 67.1MB. Free memory was 33.0MB in the beginning and 35.0MB in the end (delta: -2.0MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2024-09-15 20:06:06,029 INFO L158 Benchmark]: Referee took 495.88ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 35.0MB in the beginning and 58.1MB in the end (delta: -23.1MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2024-09-15 20:06:06,032 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.referee: - ExceptionOrErrorResult: AssertionError: Either subgraph not acyclic or there is a bug de.uni_freiburg.informatik.ultimate.plugins.generator.referee: AssertionError: Either subgraph not acyclic or there is a bug: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AcyclicSubgraphMerger.(AcyclicSubgraphMerger.java:169) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 1.27ms. Allocated memory is still 54.5MB. Free memory is still 29.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 27.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.81ms. Allocated memory is still 67.1MB. Free memory was 34.0MB in the beginning and 35.6MB in the end (delta: -1.6MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.51ms. Allocated memory is still 67.1MB. Free memory was 35.6MB in the beginning and 33.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 511.07ms. Allocated memory is still 67.1MB. Free memory was 33.0MB in the beginning and 35.0MB in the end (delta: -2.0MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Referee took 495.88ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 35.0MB in the beginning and 58.1MB in the end (delta: -23.1MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-15 20:06:06,065 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/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: ERROR: ExceptionOrErrorResult: AssertionError: Either subgraph not acyclic or there is a bug