./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/parallel-min-max-1.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c ./goblint.2024-05-07_14-17-48.files/mutex-meet/parallel-min-max-1.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 10:51:03,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:51:03,950 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:51:03,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:51:03,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:51:03,980 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:51:03,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:51:03,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:51:03,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:51:03,985 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:51:03,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:51:03,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:51:03,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:51:03,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:51:03,987 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:51:03,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:51:03,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:51:03,988 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:51:03,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:51:03,989 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:51:03,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:51:03,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:51:03,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:51:03,990 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:51:03,990 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:51:03,990 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:51:03,990 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:51:03,990 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:51:03,991 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:51:03,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:51:03,992 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:51:03,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:51:03,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:51:03,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:51:03,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:51:03,993 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:51:03,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:51:03,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:51:03,994 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:51:03,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:51:03,994 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:51:03,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:51:03,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:51:03,995 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:51:04,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:51:04,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:51:04,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:51:04,290 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:51:04,291 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:51:04,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/parallel-min-max-1.wvr.yml/witness.yml [2024-05-12 10:51:04,367 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:51:04,367 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:51:04,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2024-05-12 10:51:05,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:51:05,558 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:51:05,559 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2024-05-12 10:51:05,565 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/022760b12/3a4a99ce3352419ba6c556e3f7632370/FLAG055478433 [2024-05-12 10:51:05,575 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/022760b12/3a4a99ce3352419ba6c556e3f7632370 [2024-05-12 10:51:05,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:51:05,576 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:51:05,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:51:05,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:51:05,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:51:05,582 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:51:04" (1/2) ... [2024-05-12 10:51:05,583 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d77ec67 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:51:05, skipping insertion in model container [2024-05-12 10:51:05,583 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:51:04" (1/2) ... [2024-05-12 10:51:05,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3b1d47b9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:51:05, skipping insertion in model container [2024-05-12 10:51:05,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:51:05" (2/2) ... [2024-05-12 10:51:05,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d77ec67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05, skipping insertion in model container [2024-05-12 10:51:05,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:51:05" (2/2) ... [2024-05-12 10:51:05,585 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:51:05,595 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:51:05,596 INFO L97 edCorrectnessWitness]: Location invariant before [L108-L108] ! multithreaded || ((((((((((((((((((((((((2147483648LL + (long long )N) + (long long )v_assert >= 0LL && (2147483648LL + (long long )N) + (long long )b1 >= 0LL) && (2147483648LL + (long long )N) + (long long )b2 >= 0LL) && (1LL - (long long )b1) + (long long )v_assert >= 0LL) && (1LL - (long long )b1) + (long long )b2 >= 0LL) && (1LL - (long long )b2) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )b1 >= 0LL) && (2147483647LL - (long long )N) + (long long )b2 >= 0LL) && (long long )b1 + (long long )v_assert >= 0LL) && (long long )b1 + (long long )b2 >= 0LL) && (long long )b2 + (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )b2 >= 0LL) && (1LL + (long long )b2) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )b1 >= 0LL) && (2147483649LL + (long long )N) - (long long )b2 >= 0LL) && (2LL - (long long )b1) - (long long )v_assert >= 0LL) && (2LL - (long long )b1) - (long long )b2 >= 0LL) && (2LL - (long long )b2) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )b1 >= 0LL) && (2147483648LL - (long long )N) - (long long )b2 >= 0LL) [2024-05-12 10:51:05,596 INFO L97 edCorrectnessWitness]: Location invariant before [L109-L109] ! multithreaded || ((((((((((((((((((((((((2147483648LL + (long long )N) + (long long )v_assert >= 0LL && (2147483648LL + (long long )N) + (long long )b1 >= 0LL) && (2147483648LL + (long long )N) + (long long )b2 >= 0LL) && (1LL - (long long )b1) + (long long )v_assert >= 0LL) && (1LL - (long long )b1) + (long long )b2 >= 0LL) && (1LL - (long long )b2) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )b1 >= 0LL) && (2147483647LL - (long long )N) + (long long )b2 >= 0LL) && (long long )b1 + (long long )v_assert >= 0LL) && (long long )b1 + (long long )b2 >= 0LL) && (long long )b2 + (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )b2 >= 0LL) && (1LL + (long long )b2) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )b1 >= 0LL) && (2147483649LL + (long long )N) - (long long )b2 >= 0LL) && (2LL - (long long )b1) - (long long )v_assert >= 0LL) && (2LL - (long long )b1) - (long long )b2 >= 0LL) && (2LL - (long long )b2) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )b1 >= 0LL) && (2147483648LL - (long long )N) - (long long )b2 >= 0LL) [2024-05-12 10:51:05,596 INFO L97 edCorrectnessWitness]: Location invariant before [L110-L110] ! multithreaded || ((((((((((((((((((((((((2147483648LL + (long long )N) + (long long )v_assert >= 0LL && (2147483648LL + (long long )N) + (long long )b1 >= 0LL) && (2147483648LL + (long long )N) + (long long )b2 >= 0LL) && (1LL - (long long )b1) + (long long )v_assert >= 0LL) && (1LL - (long long )b1) + (long long )b2 >= 0LL) && (1LL - (long long )b2) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )N) + (long long )b1 >= 0LL) && (2147483647LL - (long long )N) + (long long )b2 >= 0LL) && (long long )b1 + (long long )v_assert >= 0LL) && (long long )b1 + (long long )b2 >= 0LL) && (long long )b2 + (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )v_assert >= 0LL) && (1LL + (long long )b1) - (long long )b2 >= 0LL) && (1LL + (long long )b2) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )N) - (long long )b1 >= 0LL) && (2147483649LL + (long long )N) - (long long )b2 >= 0LL) && (2LL - (long long )b1) - (long long )v_assert >= 0LL) && (2LL - (long long )b1) - (long long )b2 >= 0LL) && (2LL - (long long )b2) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )N) - (long long )b1 >= 0LL) && (2147483648LL - (long long )N) - (long long )b2 >= 0LL) [2024-05-12 10:51:05,596 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:51:05,596 INFO L106 edCorrectnessWitness]: ghost_update [L107-L107] multithreaded = 1; [2024-05-12 10:51:05,617 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:51:05,767 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2024-05-12 10:51:05,774 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:51:05,787 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 10:51:05,878 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2024-05-12 10:51:05,883 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:51:05,900 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:51:05,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05 WrapperNode [2024-05-12 10:51:05,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:51:05,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:51:05,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:51:05,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:51:05,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05" (1/1) ... [2024-05-12 10:51:05,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05" (1/1) ... [2024-05-12 10:51:05,961 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 135 [2024-05-12 10:51:05,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:51:05,963 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:51:05,963 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:51:05,963 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:51:05,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05" (1/1) ... [2024-05-12 10:51:05,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05" (1/1) ... [2024-05-12 10:51:05,996 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05" (1/1) ... [2024-05-12 10:51:06,028 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 8, 2, 2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-05-12 10:51:06,029 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05" (1/1) ... [2024-05-12 10:51:06,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05" (1/1) ... [2024-05-12 10:51:06,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05" (1/1) ... [2024-05-12 10:51:06,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05" (1/1) ... [2024-05-12 10:51:06,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05" (1/1) ... [2024-05-12 10:51:06,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05" (1/1) ... [2024-05-12 10:51:06,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:51:06,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:51:06,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:51:06,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:51:06,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05" (1/1) ... [2024-05-12 10:51:06,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:51:06,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:51:06,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-05-12 10:51:06,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-05-12 10:51:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:51:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:51:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:51:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:51:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 10:51:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 10:51:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 10:51:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 10:51:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 10:51:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 10:51:06,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 10:51:06,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 10:51:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 10:51:06,184 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 10:51:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 10:51:06,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 10:51:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-05-12 10:51:06,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-05-12 10:51:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:51:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:51:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 10:51:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 10:51:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 10:51:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 10:51:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 10:51:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-05-12 10:51:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:51:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:51:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:51:06,207 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 10:51:06,322 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:51:06,324 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:51:06,688 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:51:06,689 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:51:06,903 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:51:06,903 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-05-12 10:51:06,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:51:06 BoogieIcfgContainer [2024-05-12 10:51:06,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:51:06,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:51:06,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:51:06,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:51:06,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:51:04" (1/4) ... [2024-05-12 10:51:06,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de69dc5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:51:06, skipping insertion in model container [2024-05-12 10:51:06,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:51:05" (2/4) ... [2024-05-12 10:51:06,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de69dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:51:06, skipping insertion in model container [2024-05-12 10:51:06,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:51:05" (3/4) ... [2024-05-12 10:51:06,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de69dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:51:06, skipping insertion in model container [2024-05-12 10:51:06,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:51:06" (4/4) ... [2024-05-12 10:51:06,914 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2024-05-12 10:51:06,928 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:51:06,928 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 10:51:06,929 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:51:06,967 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-05-12 10:51:06,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 44 transitions, 109 flow [2024-05-12 10:51:07,025 INFO L124 PetriNetUnfolderBase]: 3/41 cut-off events. [2024-05-12 10:51:07,025 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-05-12 10:51:07,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 3/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-05-12 10:51:07,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 44 transitions, 109 flow [2024-05-12 10:51:07,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 40 transitions, 98 flow [2024-05-12 10:51:07,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:51:07,055 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@21faf8aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:51:07,055 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 10:51:07,061 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:51:07,061 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-05-12 10:51:07,061 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:51:07,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:07,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:51:07,062 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:51:07,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:07,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1475820475, now seen corresponding path program 1 times [2024-05-12 10:51:07,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:07,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327724150] [2024-05-12 10:51:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:07,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:07,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:07,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327724150] [2024-05-12 10:51:07,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327724150] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:51:07,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:51:07,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 10:51:07,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096082191] [2024-05-12 10:51:07,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:51:07,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:51:07,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:07,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:51:07,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:51:07,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-05-12 10:51:07,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-05-12 10:51:07,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:07,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-05-12 10:51:07,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:07,779 INFO L124 PetriNetUnfolderBase]: 593/1004 cut-off events. [2024-05-12 10:51:07,779 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-05-12 10:51:07,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1938 conditions, 1004 events. 593/1004 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5173 event pairs, 408 based on Foata normal form. 0/966 useless extension candidates. Maximal degree in co-relation 1779. Up to 854 conditions per place. [2024-05-12 10:51:07,790 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 28 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2024-05-12 10:51:07,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 160 flow [2024-05-12 10:51:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:51:07,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:51:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-05-12 10:51:07,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2024-05-12 10:51:07,802 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 98 flow. Second operand 3 states and 73 transitions. [2024-05-12 10:51:07,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 160 flow [2024-05-12 10:51:07,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 10:51:07,811 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 98 flow [2024-05-12 10:51:07,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2024-05-12 10:51:07,816 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2024-05-12 10:51:07,816 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 98 flow [2024-05-12 10:51:07,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-05-12 10:51:07,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:07,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:51:07,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:51:07,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:51:07,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:07,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2078445507, now seen corresponding path program 1 times [2024-05-12 10:51:07,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:07,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484046136] [2024-05-12 10:51:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:07,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:08,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:08,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484046136] [2024-05-12 10:51:08,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484046136] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:51:08,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406912478] [2024-05-12 10:51:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:08,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:08,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:51:08,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:51:08,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-05-12 10:51:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:08,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2024-05-12 10:51:08,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:51:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 10:51:08,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 10:51:08,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406912478] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:51:08,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-12 10:51:08,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2024-05-12 10:51:08,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749271763] [2024-05-12 10:51:08,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:51:08,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:51:08,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:08,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:51:08,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:51:08,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-05-12 10:51:08,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-05-12 10:51:08,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:08,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-05-12 10:51:08,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:08,710 INFO L124 PetriNetUnfolderBase]: 1431/2212 cut-off events. [2024-05-12 10:51:08,710 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-05-12 10:51:08,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4277 conditions, 2212 events. 1431/2212 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10819 event pairs, 554 based on Foata normal form. 0/2040 useless extension candidates. Maximal degree in co-relation 4266. Up to 1964 conditions per place. [2024-05-12 10:51:08,722 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 44 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-05-12 10:51:08,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 224 flow [2024-05-12 10:51:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:51:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:51:08,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-05-12 10:51:08,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-05-12 10:51:08,726 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 98 flow. Second operand 4 states and 83 transitions. [2024-05-12 10:51:08,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 224 flow [2024-05-12 10:51:08,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 220 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 10:51:08,729 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 126 flow [2024-05-12 10:51:08,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-05-12 10:51:08,730 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2024-05-12 10:51:08,730 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 126 flow [2024-05-12 10:51:08,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-05-12 10:51:08,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:08,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:51:08,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-05-12 10:51:08,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:08,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:51:08,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:08,943 INFO L85 PathProgramCache]: Analyzing trace with hash -226306660, now seen corresponding path program 1 times [2024-05-12 10:51:08,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:08,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685787393] [2024-05-12 10:51:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:08,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:09,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:09,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685787393] [2024-05-12 10:51:09,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685787393] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:51:09,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394497909] [2024-05-12 10:51:09,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:09,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:09,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:51:09,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:51:09,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-12 10:51:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:09,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2024-05-12 10:51:09,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:51:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:09,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:51:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:09,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394497909] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:51:09,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:51:09,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-05-12 10:51:09,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368152546] [2024-05-12 10:51:09,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:51:09,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 10:51:09,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:09,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 10:51:09,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:51:09,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-05-12 10:51:09,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 126 flow. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 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) [2024-05-12 10:51:09,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:09,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-05-12 10:51:09,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:10,317 INFO L124 PetriNetUnfolderBase]: 2782/4236 cut-off events. [2024-05-12 10:51:10,318 INFO L125 PetriNetUnfolderBase]: For 641/641 co-relation queries the response was YES. [2024-05-12 10:51:10,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9215 conditions, 4236 events. 2782/4236 cut-off events. For 641/641 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 22700 event pairs, 1325 based on Foata normal form. 144/4335 useless extension candidates. Maximal degree in co-relation 4929. Up to 2137 conditions per place. [2024-05-12 10:51:10,339 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 96 selfloop transitions, 13 changer transitions 0/114 dead transitions. [2024-05-12 10:51:10,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 114 transitions, 545 flow [2024-05-12 10:51:10,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:51:10,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:51:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-05-12 10:51:10,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-05-12 10:51:10,344 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 126 flow. Second operand 9 states and 181 transitions. [2024-05-12 10:51:10,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 114 transitions, 545 flow [2024-05-12 10:51:10,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 114 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:51:10,348 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 235 flow [2024-05-12 10:51:10,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=235, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2024-05-12 10:51:10,349 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2024-05-12 10:51:10,349 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 235 flow [2024-05-12 10:51:10,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 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) [2024-05-12 10:51:10,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:10,350 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:51:10,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-05-12 10:51:10,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-05-12 10:51:10,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:51:10,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:10,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1191160346, now seen corresponding path program 2 times [2024-05-12 10:51:10,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:10,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776766388] [2024-05-12 10:51:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:10,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:10,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:10,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776766388] [2024-05-12 10:51:10,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776766388] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:51:10,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119562186] [2024-05-12 10:51:10,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 10:51:10,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:10,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:51:10,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:51:10,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-05-12 10:51:10,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-05-12 10:51:10,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 10:51:10,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2024-05-12 10:51:10,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:51:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-05-12 10:51:11,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 10:51:11,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119562186] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:51:11,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-12 10:51:11,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10 [2024-05-12 10:51:11,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888836477] [2024-05-12 10:51:11,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:51:11,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:51:11,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:11,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:51:11,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 10:51:11,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-05-12 10:51:11,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-05-12 10:51:11,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:11,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-05-12 10:51:11,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:11,343 INFO L124 PetriNetUnfolderBase]: 2612/4141 cut-off events. [2024-05-12 10:51:11,343 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2024-05-12 10:51:11,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9494 conditions, 4141 events. 2612/4141 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 23151 event pairs, 512 based on Foata normal form. 15/4094 useless extension candidates. Maximal degree in co-relation 5004. Up to 3178 conditions per place. [2024-05-12 10:51:11,364 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 57 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2024-05-12 10:51:11,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 429 flow [2024-05-12 10:51:11,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:51:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:51:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-05-12 10:51:11,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-05-12 10:51:11,366 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 235 flow. Second operand 5 states and 103 transitions. [2024-05-12 10:51:11,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 429 flow [2024-05-12 10:51:11,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 399 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-05-12 10:51:11,371 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 253 flow [2024-05-12 10:51:11,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-05-12 10:51:11,372 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2024-05-12 10:51:11,372 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 253 flow [2024-05-12 10:51:11,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-05-12 10:51:11,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:11,373 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:51:11,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-05-12 10:51:11,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:11,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:51:11,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:11,585 INFO L85 PathProgramCache]: Analyzing trace with hash 367364067, now seen corresponding path program 1 times [2024-05-12 10:51:11,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:11,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840593539] [2024-05-12 10:51:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:11,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:11,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:11,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840593539] [2024-05-12 10:51:11,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840593539] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:51:11,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897655213] [2024-05-12 10:51:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:11,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:11,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:51:11,899 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:51:11,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-05-12 10:51:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:11,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2024-05-12 10:51:12,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:51:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:12,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:51:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-05-12 10:51:12,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897655213] provided 1 perfect and 1 imperfect interpolant sequences [2024-05-12 10:51:12,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-05-12 10:51:12,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 8] total 17 [2024-05-12 10:51:12,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177719551] [2024-05-12 10:51:12,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:51:12,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:51:12,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:12,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:51:12,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-05-12 10:51:12,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-05-12 10:51:12,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-05-12 10:51:12,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:12,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-05-12 10:51:12,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:12,704 INFO L124 PetriNetUnfolderBase]: 1934/3138 cut-off events. [2024-05-12 10:51:12,704 INFO L125 PetriNetUnfolderBase]: For 2490/2698 co-relation queries the response was YES. [2024-05-12 10:51:12,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6913 conditions, 3138 events. 1934/3138 cut-off events. For 2490/2698 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 18068 event pairs, 808 based on Foata normal form. 165/3206 useless extension candidates. Maximal degree in co-relation 3476. Up to 2727 conditions per place. [2024-05-12 10:51:12,721 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 42 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-05-12 10:51:12,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 331 flow [2024-05-12 10:51:12,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:51:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:51:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-05-12 10:51:12,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 10:51:12,722 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 253 flow. Second operand 3 states and 66 transitions. [2024-05-12 10:51:12,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 331 flow [2024-05-12 10:51:12,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 293 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 10:51:12,726 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 201 flow [2024-05-12 10:51:12,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2024-05-12 10:51:12,727 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2024-05-12 10:51:12,727 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 201 flow [2024-05-12 10:51:12,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-05-12 10:51:12,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:12,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:51:12,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-05-12 10:51:12,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:12,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:51:12,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:12,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1646654521, now seen corresponding path program 1 times [2024-05-12 10:51:12,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:12,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971410047] [2024-05-12 10:51:12,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:12,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 10:51:13,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971410047] [2024-05-12 10:51:13,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971410047] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:51:13,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:51:13,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:51:13,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808494475] [2024-05-12 10:51:13,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:51:13,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:51:13,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:13,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:51:13,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:51:13,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-05-12 10:51:13,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-05-12 10:51:13,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:13,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-05-12 10:51:13,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:13,263 INFO L124 PetriNetUnfolderBase]: 1905/3171 cut-off events. [2024-05-12 10:51:13,263 INFO L125 PetriNetUnfolderBase]: For 137/170 co-relation queries the response was YES. [2024-05-12 10:51:13,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6368 conditions, 3171 events. 1905/3171 cut-off events. For 137/170 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 19319 event pairs, 1045 based on Foata normal form. 133/3126 useless extension candidates. Maximal degree in co-relation 2859. Up to 2105 conditions per place. [2024-05-12 10:51:13,278 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 49 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-05-12 10:51:13,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 69 transitions, 339 flow [2024-05-12 10:51:13,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:51:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:51:13,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-05-12 10:51:13,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568181818181818 [2024-05-12 10:51:13,279 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 201 flow. Second operand 4 states and 98 transitions. [2024-05-12 10:51:13,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 69 transitions, 339 flow [2024-05-12 10:51:13,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:51:13,282 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 209 flow [2024-05-12 10:51:13,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2024-05-12 10:51:13,284 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2024-05-12 10:51:13,285 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 209 flow [2024-05-12 10:51:13,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-05-12 10:51:13,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:13,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:51:13,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 10:51:13,285 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:51:13,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash 874580599, now seen corresponding path program 1 times [2024-05-12 10:51:13,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:13,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984578384] [2024-05-12 10:51:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:13,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 10:51:13,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:13,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984578384] [2024-05-12 10:51:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984578384] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:51:13,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:51:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:51:13,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220276285] [2024-05-12 10:51:13,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:51:13,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:51:13,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:51:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:51:13,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-05-12 10:51:13,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2024-05-12 10:51:13,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:13,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-05-12 10:51:13,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:13,639 INFO L124 PetriNetUnfolderBase]: 2073/3458 cut-off events. [2024-05-12 10:51:13,639 INFO L125 PetriNetUnfolderBase]: For 451/623 co-relation queries the response was YES. [2024-05-12 10:51:13,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7560 conditions, 3458 events. 2073/3458 cut-off events. For 451/623 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 21029 event pairs, 1268 based on Foata normal form. 290/3625 useless extension candidates. Maximal degree in co-relation 3470. Up to 2369 conditions per place. [2024-05-12 10:51:13,701 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 50 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2024-05-12 10:51:13,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 70 transitions, 354 flow [2024-05-12 10:51:13,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:51:13,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:51:13,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-05-12 10:51:13,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5511363636363636 [2024-05-12 10:51:13,703 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 209 flow. Second operand 4 states and 97 transitions. [2024-05-12 10:51:13,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 70 transitions, 354 flow [2024-05-12 10:51:13,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 349 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:51:13,705 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 219 flow [2024-05-12 10:51:13,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-05-12 10:51:13,706 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2024-05-12 10:51:13,706 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 219 flow [2024-05-12 10:51:13,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2024-05-12 10:51:13,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:51:13,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:51:13,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 10:51:13,707 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 10:51:13,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:51:13,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1055606080, now seen corresponding path program 1 times [2024-05-12 10:51:13,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:51:13,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8420301] [2024-05-12 10:51:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:13,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:51:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 10:51:14,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:51:14,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8420301] [2024-05-12 10:51:14,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8420301] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:51:14,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57558977] [2024-05-12 10:51:14,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:51:14,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:14,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:51:14,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:51:14,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-05-12 10:51:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:51:14,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjunts are in the unsatisfiable core [2024-05-12 10:51:14,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:51:14,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-05-12 10:51:14,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-05-12 10:51:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:51:14,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:51:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 10:51:14,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57558977] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:51:14,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:51:14,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 8] total 19 [2024-05-12 10:51:14,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771719156] [2024-05-12 10:51:14,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:51:14,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-05-12 10:51:14,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:51:14,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-05-12 10:51:14,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-05-12 10:51:14,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-05-12 10:51:14,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 219 flow. Second operand has 19 states, 19 states have (on average 15.368421052631579) internal successors, (292), 19 states have internal predecessors, (292), 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) [2024-05-12 10:51:14,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:51:14,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-05-12 10:51:14,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:51:15,644 INFO L124 PetriNetUnfolderBase]: 5267/8352 cut-off events. [2024-05-12 10:51:15,644 INFO L125 PetriNetUnfolderBase]: For 4237/4360 co-relation queries the response was YES. [2024-05-12 10:51:15,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20675 conditions, 8352 events. 5267/8352 cut-off events. For 4237/4360 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 49714 event pairs, 432 based on Foata normal form. 63/8379 useless extension candidates. Maximal degree in co-relation 9759. Up to 1364 conditions per place. [2024-05-12 10:51:15,664 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 0 selfloop transitions, 0 changer transitions 224/224 dead transitions. [2024-05-12 10:51:15,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 224 transitions, 1141 flow [2024-05-12 10:51:15,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-05-12 10:51:15,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-05-12 10:51:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 399 transitions. [2024-05-12 10:51:15,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037878787878788 [2024-05-12 10:51:15,666 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 219 flow. Second operand 18 states and 399 transitions. [2024-05-12 10:51:15,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 224 transitions, 1141 flow [2024-05-12 10:51:15,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 224 transitions, 1127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:51:15,672 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2024-05-12 10:51:15,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2024-05-12 10:51:15,674 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 24 predicate places. [2024-05-12 10:51:15,674 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2024-05-12 10:51:15,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.368421052631579) internal successors, (292), 19 states have internal predecessors, (292), 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) [2024-05-12 10:51:15,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 7 remaining) [2024-05-12 10:51:15,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-05-12 10:51:15,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-05-12 10:51:15,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-05-12 10:51:15,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-05-12 10:51:15,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-05-12 10:51:15,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2024-05-12 10:51:15,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-05-12 10:51:15,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:51:15,891 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-05-12 10:51:15,894 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 10:51:15,894 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 10:51:15,897 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-05-12 10:51:15,897 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-05-12 10:51:15,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 10:51:15 BasicIcfg [2024-05-12 10:51:15,898 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 10:51:15,898 INFO L158 Benchmark]: Toolchain (without parser) took 10321.72ms. Allocated memory was 121.6MB in the beginning and 453.0MB in the end (delta: 331.4MB). Free memory was 85.3MB in the beginning and 254.6MB in the end (delta: -169.3MB). Peak memory consumption was 201.5MB. Max. memory is 16.1GB. [2024-05-12 10:51:15,898 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 121.6MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:51:15,898 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 92.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:51:15,899 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.86ms. Allocated memory is still 121.6MB. Free memory was 85.0MB in the beginning and 67.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-05-12 10:51:15,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.65ms. Allocated memory is still 121.6MB. Free memory was 67.8MB in the beginning and 64.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-05-12 10:51:15,899 INFO L158 Benchmark]: Boogie Preprocessor took 106.03ms. Allocated memory is still 121.6MB. Free memory was 64.0MB in the beginning and 60.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 10:51:15,899 INFO L158 Benchmark]: RCFGBuilder took 834.20ms. Allocated memory was 121.6MB in the beginning and 161.5MB in the end (delta: 39.8MB). Free memory was 60.8MB in the beginning and 121.6MB in the end (delta: -60.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-05-12 10:51:15,900 INFO L158 Benchmark]: TraceAbstraction took 8991.55ms. Allocated memory was 161.5MB in the beginning and 453.0MB in the end (delta: 291.5MB). Free memory was 120.5MB in the beginning and 254.6MB in the end (delta: -134.1MB). Peak memory consumption was 197.3MB. Max. memory is 16.1GB. [2024-05-12 10:51:15,901 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 121.6MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 92.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.86ms. Allocated memory is still 121.6MB. Free memory was 85.0MB in the beginning and 67.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.65ms. Allocated memory is still 121.6MB. Free memory was 67.8MB in the beginning and 64.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 106.03ms. Allocated memory is still 121.6MB. Free memory was 64.0MB in the beginning and 60.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 834.20ms. Allocated memory was 121.6MB in the beginning and 161.5MB in the end (delta: 39.8MB). Free memory was 60.8MB in the beginning and 121.6MB in the end (delta: -60.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8991.55ms. Allocated memory was 161.5MB in the beginning and 453.0MB in the end (delta: 291.5MB). Free memory was 120.5MB in the beginning and 254.6MB in the end (delta: -134.1MB). Peak memory consumption was 197.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 108]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 109]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 110]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 115]: 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 with 1 thread instances CFG has 7 procedures, 62 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.9s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 870 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 786 mSDsluCounter, 331 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 311 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1680 IncrementalHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 20 mSDtfsCounter, 1680 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=4, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 240 NumberOfCodeBlocks, 236 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 3169 SizeOfPredicates, 22 NumberOfNonLiveVariables, 731 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 26/67 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 10:51:15,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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