./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-commit-2.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/popl20-commit-2.wvr.c ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-commit-2.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-dev-958ec4d-m [2024-02-07 14:37:59,792 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:37:59,857 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:37:59,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:37:59,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:37:59,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:37:59,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:37:59,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:37:59,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:37:59,891 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:37:59,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:37:59,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:37:59,892 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:37:59,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:37:59,893 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:37:59,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:37:59,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:37:59,894 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:37:59,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:37:59,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:37:59,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:37:59,895 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:37:59,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:37:59,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:37:59,896 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:37:59,896 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:37:59,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:37:59,896 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:37:59,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:37:59,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:37:59,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:37:59,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:37:59,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:37:59,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:37:59,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:37:59,899 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:37:59,899 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:37:59,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:37:59,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:37:59,899 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:37:59,899 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:37:59,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:37:59,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:37:59,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:38:00,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:38:00,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:38:00,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:38:00,139 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:38:00,140 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:38:00,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-commit-2.wvr.yml/witness.yml [2024-02-07 14:38:00,258 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:38:00,258 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:38:00,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2024-02-07 14:38:01,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:38:01,400 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:38:01,401 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2024-02-07 14:38:01,406 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a6ee775/f0866c0cbeeb4f5ab89656255ce01e32/FLAGec37d7b36 [2024-02-07 14:38:01,415 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5a6ee775/f0866c0cbeeb4f5ab89656255ce01e32 [2024-02-07 14:38:01,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:38:01,417 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:38:01,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:38:01,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:38:01,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:38:01,422 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:38:00" (1/2) ... [2024-02-07 14:38:01,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728061b0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:38:01, skipping insertion in model container [2024-02-07 14:38:01,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:38:00" (1/2) ... [2024-02-07 14:38:01,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@419335ce and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:38:01, skipping insertion in model container [2024-02-07 14:38:01,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:38:01" (2/2) ... [2024-02-07 14:38:01,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728061b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01, skipping insertion in model container [2024-02-07 14:38:01,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:38:01" (2/2) ... [2024-02-07 14:38:01,425 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:38:01,459 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:38:01,460 INFO L76 edCorrectnessWitness]: Location invariant before [L114-L114] (-2147483647 <= node2_back) && (node2_front <= 2147483646) [2024-02-07 14:38:01,460 INFO L76 edCorrectnessWitness]: Location invariant before [L63-L63] -2147483647 <= node1_back [2024-02-07 14:38:01,460 INFO L76 edCorrectnessWitness]: Location invariant before [L99-L99] -2147483647 <= node1_front [2024-02-07 14:38:01,460 INFO L76 edCorrectnessWitness]: Location invariant before [L141-L141] -2147483647 <= client_front [2024-02-07 14:38:01,460 INFO L76 edCorrectnessWitness]: Location invariant before [L75-L75] -2147483647 <= manager_front [2024-02-07 14:38:01,460 INFO L76 edCorrectnessWitness]: Location invariant before [L54-L54] (-2147483647 <= manager_back) && (manager_front <= 2147483646) [2024-02-07 14:38:01,461 INFO L76 edCorrectnessWitness]: Location invariant before [L80-L80] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:38:01,461 INFO L76 edCorrectnessWitness]: Location invariant before [L123-L123] -2147483647 <= manager_back [2024-02-07 14:38:01,461 INFO L76 edCorrectnessWitness]: Location invariant before [L132-L132] 0 <= manager_back [2024-02-07 14:38:01,461 INFO L76 edCorrectnessWitness]: Location invariant before [L97-L97] safe == (_Bool)1 [2024-02-07 14:38:01,461 INFO L76 edCorrectnessWitness]: Location invariant before [L74-L74] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:38:01,461 INFO L76 edCorrectnessWitness]: Location invariant before [L102-L102] 0 <= manager_back [2024-02-07 14:38:01,461 INFO L76 edCorrectnessWitness]: Location invariant before [L135-L135] -2147483647 <= manager_back [2024-02-07 14:38:01,461 INFO L76 edCorrectnessWitness]: Location invariant before [L197-L197] ((((((((8 <= i && i <= 2147483646) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:38:01,462 INFO L76 edCorrectnessWitness]: Location invariant before [L87-L87] -2147483647 <= client_back [2024-02-07 14:38:01,462 INFO L76 edCorrectnessWitness]: Location invariant before [L72-L72] (-2147483647 <= manager_back) && (manager_front <= 2147483646) [2024-02-07 14:38:01,462 INFO L76 edCorrectnessWitness]: Location invariant before [L117-L117] -2147483647 <= node2_front [2024-02-07 14:38:01,462 INFO L76 edCorrectnessWitness]: Location invariant before [L57-L57] -2147483647 <= manager_front [2024-02-07 14:38:01,462 INFO L76 edCorrectnessWitness]: Location invariant before [L139-L139] safe == (_Bool)1 [2024-02-07 14:38:01,462 INFO L76 edCorrectnessWitness]: Location invariant before [L138-L138] (-2147483647 <= client_back) && (client_front <= 2147483646) [2024-02-07 14:38:01,462 INFO L76 edCorrectnessWitness]: Location invariant before [L140-L140] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:38:01,463 INFO L76 edCorrectnessWitness]: Location invariant before [L152-L152] safe == (_Bool)1 [2024-02-07 14:38:01,463 INFO L76 edCorrectnessWitness]: Location invariant before [L55-L55] safe == (_Bool)1 [2024-02-07 14:38:01,463 INFO L76 edCorrectnessWitness]: Location invariant before [L79-L79] safe == (_Bool)1 [2024-02-07 14:38:01,463 INFO L76 edCorrectnessWitness]: Location invariant before [L60-L60] 0 <= node1_back [2024-02-07 14:38:01,464 INFO L76 edCorrectnessWitness]: Location invariant before [L78-L78] (-2147483647 <= manager_back) && (manager_front <= 2147483646) [2024-02-07 14:38:01,464 INFO L76 edCorrectnessWitness]: Location invariant before [L185-L185] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:38:01,464 INFO L76 edCorrectnessWitness]: Location invariant before [L81-L81] -2147483647 <= manager_front [2024-02-07 14:38:01,464 INFO L76 edCorrectnessWitness]: Location invariant before [L96-L96] (-2147483647 <= node1_back) && (node1_front <= 2147483646) [2024-02-07 14:38:01,464 INFO L76 edCorrectnessWitness]: Location invariant before [L69-L69] -2147483647 <= node2_back [2024-02-07 14:38:01,464 INFO L76 edCorrectnessWitness]: Location invariant before [L66-L66] 0 <= node2_back [2024-02-07 14:38:01,464 INFO L76 edCorrectnessWitness]: Location invariant before [L116-L116] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:38:01,464 INFO L76 edCorrectnessWitness]: Location invariant before [L84-L84] 0 <= client_back [2024-02-07 14:38:01,465 INFO L76 edCorrectnessWitness]: Location invariant before [L105-L105] -2147483647 <= manager_back [2024-02-07 14:38:01,465 INFO L76 edCorrectnessWitness]: Location invariant before [L73-L73] safe == (_Bool)1 [2024-02-07 14:38:01,465 INFO L76 edCorrectnessWitness]: Location invariant before [L56-L56] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:38:01,465 INFO L76 edCorrectnessWitness]: Location invariant before [L120-L120] 0 <= manager_back [2024-02-07 14:38:01,465 INFO L76 edCorrectnessWitness]: Location invariant before [L98-L98] safe == (_Bool)0 || safe == (_Bool)1 [2024-02-07 14:38:01,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:38:01,719 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5898,5911] [2024-02-07 14:38:01,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:38:01,736 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:38:01,822 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c[5898,5911] Start Parsing Local [2024-02-07 14:38:01,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:38:01,843 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:38:01,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01 WrapperNode [2024-02-07 14:38:01,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:38:01,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:38:01,844 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:38:01,844 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:38:01,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01" (1/1) ... [2024-02-07 14:38:01,856 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01" (1/1) ... [2024-02-07 14:38:01,887 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 522 [2024-02-07 14:38:01,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:38:01,887 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:38:01,887 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:38:01,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:38:01,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01" (1/1) ... [2024-02-07 14:38:01,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01" (1/1) ... [2024-02-07 14:38:01,899 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01" (1/1) ... [2024-02-07 14:38:01,917 INFO L175 MemorySlicer]: Split 26 memory accesses to 6 slices as follows [2, 16, 2, 2, 2, 2]. 62 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 4, 1, 1, 1, 1]. [2024-02-07 14:38:01,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01" (1/1) ... [2024-02-07 14:38:01,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01" (1/1) ... [2024-02-07 14:38:01,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01" (1/1) ... [2024-02-07 14:38:01,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01" (1/1) ... [2024-02-07 14:38:01,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01" (1/1) ... [2024-02-07 14:38:01,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01" (1/1) ... [2024-02-07 14:38:01,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:38:01,949 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:38:01,949 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:38:01,949 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:38:01,950 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01" (1/1) ... [2024-02-07 14:38:01,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:38:01,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:38:01,971 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) [2024-02-07 14:38:01,995 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 [2024-02-07 14:38:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:38:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:38:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:38:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:38:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:38:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:38:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:38:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:38:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:38:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:38:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:38:02,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:38:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:38:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:38:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 14:38:02,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 14:38:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 14:38:02,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 14:38:02,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-07 14:38:02,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-07 14:38:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-07 14:38:02,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-07 14:38:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:38:02,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:38:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:38:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:38:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:38:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:38:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:38:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:38:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 14:38:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:38:02,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:38:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:38:02,016 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:38:02,161 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:38:02,163 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:38:02,657 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:38:02,657 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:38:03,070 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:38:03,070 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-02-07 14:38:03,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:38:03 BoogieIcfgContainer [2024-02-07 14:38:03,071 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:38:03,075 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:38:03,075 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:38:03,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:38:03,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:38:00" (1/4) ... [2024-02-07 14:38:03,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197936ee and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:38:03, skipping insertion in model container [2024-02-07 14:38:03,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:38:01" (2/4) ... [2024-02-07 14:38:03,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197936ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:38:03, skipping insertion in model container [2024-02-07 14:38:03,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:38:01" (3/4) ... [2024-02-07 14:38:03,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197936ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:38:03, skipping insertion in model container [2024-02-07 14:38:03,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:38:03" (4/4) ... [2024-02-07 14:38:03,081 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2024-02-07 14:38:03,094 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:38:03,095 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-02-07 14:38:03,095 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:38:03,185 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-07 14:38:03,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 114 transitions, 256 flow [2024-02-07 14:38:03,258 INFO L124 PetriNetUnfolderBase]: 12/110 cut-off events. [2024-02-07 14:38:03,259 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 14:38:03,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 110 events. 12/110 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 357 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2024-02-07 14:38:03,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 114 transitions, 256 flow [2024-02-07 14:38:03,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 109 transitions, 242 flow [2024-02-07 14:38:03,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:38:03,285 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;@4a63d86f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:38:03,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2024-02-07 14:38:03,287 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:38:03,287 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 14:38:03,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:38:03,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:38:03,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 14:38:03,289 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 78 more)] === [2024-02-07 14:38:03,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:38:03,292 INFO L85 PathProgramCache]: Analyzing trace with hash 49510, now seen corresponding path program 1 times [2024-02-07 14:38:03,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:38:03,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887006915] [2024-02-07 14:38:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:38:03,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:38:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:38:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:38:03,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:38:03,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887006915] [2024-02-07 14:38:03,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887006915] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:38:03,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:38:03,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:38:03,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998349932] [2024-02-07 14:38:03,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:38:03,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:38:03,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:38:03,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:38:03,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:38:03,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 114 [2024-02-07 14:38:03,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 109 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-02-07 14:38:03,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:38:03,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 114 [2024-02-07 14:38:03,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:38:13,219 INFO L124 PetriNetUnfolderBase]: 118643/157958 cut-off events. [2024-02-07 14:38:13,219 INFO L125 PetriNetUnfolderBase]: For 4231/4231 co-relation queries the response was YES. [2024-02-07 14:38:13,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312671 conditions, 157958 events. 118643/157958 cut-off events. For 4231/4231 co-relation queries the response was YES. Maximal size of possible extension queue 8032. Compared 1125698 event pairs, 28308 based on Foata normal form. 23936/116734 useless extension candidates. Maximal degree in co-relation 295774. Up to 141331 conditions per place. [2024-02-07 14:38:14,033 INFO L140 encePairwiseOnDemand]: 81/114 looper letters, 98 selfloop transitions, 5 changer transitions 1/122 dead transitions. [2024-02-07 14:38:14,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 122 transitions, 497 flow [2024-02-07 14:38:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:38:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:38:14,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2024-02-07 14:38:14,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6169590643274854 [2024-02-07 14:38:14,046 INFO L175 Difference]: Start difference. First operand has 110 places, 109 transitions, 242 flow. Second operand 3 states and 211 transitions. [2024-02-07 14:38:14,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 122 transitions, 497 flow [2024-02-07 14:38:14,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 122 transitions, 467 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-07 14:38:14,139 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 221 flow [2024-02-07 14:38:14,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2024-02-07 14:38:14,142 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -24 predicate places. [2024-02-07 14:38:14,143 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 221 flow [2024-02-07 14:38:14,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-02-07 14:38:14,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:38:14,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 14:38:14,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:38:14,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 78 more)] === [2024-02-07 14:38:14,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:38:14,144 INFO L85 PathProgramCache]: Analyzing trace with hash 47629031, now seen corresponding path program 1 times [2024-02-07 14:38:14,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:38:14,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458809151] [2024-02-07 14:38:14,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:38:14,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:38:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:38:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:38:14,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:38:14,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458809151] [2024-02-07 14:38:14,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458809151] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:38:14,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:38:14,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:38:14,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582686793] [2024-02-07 14:38:14,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:38:14,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:38:14,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:38:14,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:38:14,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:38:14,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 114 [2024-02-07 14:38:14,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-02-07 14:38:14,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:38:14,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 114 [2024-02-07 14:38:14,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:38:23,895 INFO L124 PetriNetUnfolderBase]: 118056/155891 cut-off events. [2024-02-07 14:38:23,897 INFO L125 PetriNetUnfolderBase]: For 8555/8555 co-relation queries the response was YES. [2024-02-07 14:38:24,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329341 conditions, 155891 events. 118056/155891 cut-off events. For 8555/8555 co-relation queries the response was YES. Maximal size of possible extension queue 7847. Compared 1062748 event pairs, 91970 based on Foata normal form. 0/103256 useless extension candidates. Maximal degree in co-relation 134848. Up to 149658 conditions per place. [2024-02-07 14:38:24,626 INFO L140 encePairwiseOnDemand]: 101/114 looper letters, 74 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2024-02-07 14:38:24,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 98 transitions, 403 flow [2024-02-07 14:38:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:38:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:38:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-02-07 14:38:24,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41812865497076024 [2024-02-07 14:38:24,632 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 221 flow. Second operand 3 states and 143 transitions. [2024-02-07 14:38:24,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 98 transitions, 403 flow [2024-02-07 14:38:24,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 98 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:38:24,637 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 292 flow [2024-02-07 14:38:24,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2024-02-07 14:38:24,638 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -21 predicate places. [2024-02-07 14:38:24,638 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 292 flow [2024-02-07 14:38:24,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-02-07 14:38:24,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:38:24,639 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-07 14:38:24,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:38:24,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 78 more)] === [2024-02-07 14:38:24,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:38:24,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1473091544, now seen corresponding path program 1 times [2024-02-07 14:38:24,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:38:24,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391492591] [2024-02-07 14:38:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:38:24,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:38:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:38:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:38:24,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:38:24,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391492591] [2024-02-07 14:38:24,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391492591] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:38:24,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392988982] [2024-02-07 14:38:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:38:24,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:38:24,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:38:24,737 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) [2024-02-07 14:38:24,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 14:38:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:38:24,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 14:38:24,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:38:24,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:38:24,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:38:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:38:24,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392988982] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:38:24,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:38:24,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:38:24,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456625004] [2024-02-07 14:38:24,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:38:24,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:38:24,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:38:24,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:38:24,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:38:24,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 114 [2024-02-07 14:38:24,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-02-07 14:38:24,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:38:24,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 114 [2024-02-07 14:38:24,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand