./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-parallel-sum-equiv.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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-parallel-sum-equiv.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-parallel-sum-equiv.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 16:25:37,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 16:25:37,629 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 16:25:37,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 16:25:37,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 16:25:37,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 16:25:37,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 16:25:37,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 16:25:37,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 16:25:37,694 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 16:25:37,695 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 16:25:37,695 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 16:25:37,696 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 16:25:37,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 16:25:37,697 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 16:25:37,697 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 16:25:37,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 16:25:37,697 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 16:25:37,698 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 16:25:37,698 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 16:25:37,698 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 16:25:37,698 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 16:25:37,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 16:25:37,699 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 16:25:37,699 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 16:25:37,699 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 16:25:37,699 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 16:25:37,712 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 16:25:37,712 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 16:25:37,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 16:25:37,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 16:25:37,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 16:25:37,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:25:37,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 16:25:37,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 16:25:37,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 16:25:37,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 16:25:37,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 16:25:37,715 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 16:25:37,715 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 16:25:37,715 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 16:25:37,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 16:25:37,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 16:25:37,716 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 16:25:38,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 16:25:38,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 16:25:38,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 16:25:38,108 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 16:25:38,109 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 16:25:38,110 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-parallel-sum-equiv.wvr.yml/witness.yml [2024-06-04 16:25:38,273 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 16:25:38,273 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 16:25:38,275 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2024-06-04 16:25:39,320 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 16:25:39,479 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 16:25:39,479 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2024-06-04 16:25:39,485 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e125284ab/e3a0e9c512de4d9aaab2313a745479fd/FLAG0329721c7 [2024-06-04 16:25:39,510 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e125284ab/e3a0e9c512de4d9aaab2313a745479fd [2024-06-04 16:25:39,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 16:25:39,514 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 16:25:39,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 16:25:39,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 16:25:39,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 16:25:39,521 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:25:38" (1/2) ... [2024-06-04 16:25:39,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f2b17d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:25:39, skipping insertion in model container [2024-06-04 16:25:39,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:25:38" (1/2) ... [2024-06-04 16:25:39,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7aa0faf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:25:39, skipping insertion in model container [2024-06-04 16:25:39,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:25:39" (2/2) ... [2024-06-04 16:25:39,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f2b17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39, skipping insertion in model container [2024-06-04 16:25:39,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:25:39" (2/2) ... [2024-06-04 16:25:39,526 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 16:25:39,543 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 16:25:39,544 INFO L97 edCorrectnessWitness]: Location invariant before [L92-L92] ! multithreaded || ((4294967296LL + (long long )i_7) + (long long )n_1 >= 0LL && (4294967295LL + (long long )i_7) - (long long )n_1 >= 0LL) [2024-06-04 16:25:39,544 INFO L97 edCorrectnessWitness]: Location invariant before [L93-L93] ! multithreaded || ((4294967296LL + (long long )i_7) + (long long )n_1 >= 0LL && (4294967295LL + (long long )i_7) - (long long )n_1 >= 0LL) [2024-06-04 16:25:39,544 INFO L97 edCorrectnessWitness]: Location invariant before [L140-L140] ! multithreaded || ((4294967296LL + (long long )i_7) + (long long )n_1 >= 0LL && (4294967295LL + (long long )i_7) - (long long )n_1 >= 0LL) [2024-06-04 16:25:39,545 INFO L97 edCorrectnessWitness]: Location invariant before [L139-L139] ! multithreaded || ((4294967296LL + (long long )i_7) + (long long )n_1 >= 0LL && (4294967295LL + (long long )i_7) - (long long )n_1 >= 0LL) [2024-06-04 16:25:39,545 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 16:25:39,545 INFO L106 edCorrectnessWitness]: ghost_update [L138-L138] multithreaded = 1; [2024-06-04 16:25:39,566 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 16:25:39,752 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:25:39,767 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 16:25:39,817 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:25:39,830 INFO L206 MainTranslator]: Completed translation [2024-06-04 16:25:39,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39 WrapperNode [2024-06-04 16:25:39,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 16:25:39,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 16:25:39,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 16:25:39,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 16:25:39,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39" (1/1) ... [2024-06-04 16:25:39,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39" (1/1) ... [2024-06-04 16:25:39,868 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 258 [2024-06-04 16:25:39,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 16:25:39,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 16:25:39,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 16:25:39,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 16:25:39,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39" (1/1) ... [2024-06-04 16:25:39,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39" (1/1) ... [2024-06-04 16:25:39,883 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39" (1/1) ... [2024-06-04 16:25:39,902 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-06-04 16:25:39,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39" (1/1) ... [2024-06-04 16:25:39,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39" (1/1) ... [2024-06-04 16:25:39,922 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39" (1/1) ... [2024-06-04 16:25:39,926 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39" (1/1) ... [2024-06-04 16:25:39,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39" (1/1) ... [2024-06-04 16:25:39,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39" (1/1) ... [2024-06-04 16:25:39,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 16:25:39,931 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 16:25:39,931 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 16:25:39,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 16:25:39,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39" (1/1) ... [2024-06-04 16:25:39,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:25:39,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:25:39,966 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) [2024-06-04 16:25:39,983 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 [2024-06-04 16:25:40,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 16:25:40,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-04 16:25:40,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-04 16:25:40,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-04 16:25:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-04 16:25:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-04 16:25:40,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-04 16:25:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-04 16:25:40,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-04 16:25:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-04 16:25:40,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-04 16:25:40,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-04 16:25:40,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-04 16:25:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 16:25:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-04 16:25:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 16:25:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 16:25:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-04 16:25:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 16:25:40,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 16:25:40,017 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 16:25:40,104 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 16:25:40,106 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 16:25:40,439 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 16:25:40,440 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 16:25:40,732 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 16:25:40,734 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-04 16:25:40,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:25:40 BoogieIcfgContainer [2024-06-04 16:25:40,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 16:25:40,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 16:25:40,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 16:25:40,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 16:25:40,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:25:38" (1/4) ... [2024-06-04 16:25:40,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e11c576 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:25:40, skipping insertion in model container [2024-06-04 16:25:40,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 04:25:39" (2/4) ... [2024-06-04 16:25:40,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e11c576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 04:25:40, skipping insertion in model container [2024-06-04 16:25:40,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:25:39" (3/4) ... [2024-06-04 16:25:40,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e11c576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 04:25:40, skipping insertion in model container [2024-06-04 16:25:40,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:25:40" (4/4) ... [2024-06-04 16:25:40,744 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-06-04 16:25:40,757 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 16:25:40,757 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-04 16:25:40,757 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 16:25:40,819 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-06-04 16:25:40,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 67 transitions, 174 flow [2024-06-04 16:25:40,877 INFO L124 PetriNetUnfolderBase]: 9/60 cut-off events. [2024-06-04 16:25:40,877 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-04 16:25:40,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 60 events. 9/60 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2024-06-04 16:25:40,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 67 transitions, 174 flow [2024-06-04 16:25:40,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 58 transitions, 143 flow [2024-06-04 16:25:40,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 16:25:40,895 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;@6bc06682, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 16:25:40,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-06-04 16:25:40,900 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 16:25:40,901 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2024-06-04 16:25:40,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 16:25:40,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:25:40,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:25:40,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-04 16:25:40,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:25:40,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1695713402, now seen corresponding path program 1 times [2024-06-04 16:25:40,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:25:40,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433040198] [2024-06-04 16:25:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:25:40,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:25:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:25:41,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:25:41,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:25:41,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433040198] [2024-06-04 16:25:41,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433040198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:25:41,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:25:41,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 16:25:41,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664964732] [2024-06-04 16:25:41,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:25:41,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 16:25:41,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:25:41,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 16:25:41,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 16:25:41,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 69 [2024-06-04 16:25:41,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-06-04 16:25:41,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:25:41,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 69 [2024-06-04 16:25:41,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:25:42,994 INFO L124 PetriNetUnfolderBase]: 18204/24094 cut-off events. [2024-06-04 16:25:42,995 INFO L125 PetriNetUnfolderBase]: For 1075/1075 co-relation queries the response was YES. [2024-06-04 16:25:43,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49402 conditions, 24094 events. 18204/24094 cut-off events. For 1075/1075 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 123582 event pairs, 4404 based on Foata normal form. 484/22142 useless extension candidates. Maximal degree in co-relation 49342. Up to 21420 conditions per place. [2024-06-04 16:25:43,204 INFO L140 encePairwiseOnDemand]: 60/69 looper letters, 74 selfloop transitions, 2 changer transitions 2/83 dead transitions. [2024-06-04 16:25:43,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 370 flow [2024-06-04 16:25:43,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 16:25:43,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 16:25:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-06-04 16:25:43,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-06-04 16:25:43,215 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 143 flow. Second operand 3 states and 114 transitions. [2024-06-04 16:25:43,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 370 flow [2024-06-04 16:25:43,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 83 transitions, 339 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 16:25:43,227 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 127 flow [2024-06-04 16:25:43,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-06-04 16:25:43,231 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2024-06-04 16:25:43,232 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 127 flow [2024-06-04 16:25:43,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-06-04 16:25:43,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:25:43,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:25:43,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 16:25:43,233 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-04 16:25:43,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:25:43,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1472174766, now seen corresponding path program 1 times [2024-06-04 16:25:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:25:43,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367457145] [2024-06-04 16:25:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:25:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:25:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:25:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:25:43,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:25:43,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367457145] [2024-06-04 16:25:43,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367457145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:25:43,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:25:43,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 16:25:43,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018330133] [2024-06-04 16:25:43,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:25:43,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 16:25:43,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:25:43,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 16:25:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 16:25:43,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 69 [2024-06-04 16:25:43,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-06-04 16:25:43,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:25:43,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 69 [2024-06-04 16:25:43,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:25:45,426 INFO L124 PetriNetUnfolderBase]: 23959/31855 cut-off events. [2024-06-04 16:25:45,426 INFO L125 PetriNetUnfolderBase]: For 4747/4747 co-relation queries the response was YES. [2024-06-04 16:25:45,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68123 conditions, 31855 events. 23959/31855 cut-off events. For 4747/4747 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 164320 event pairs, 15958 based on Foata normal form. 1860/30568 useless extension candidates. Maximal degree in co-relation 63813. Up to 23993 conditions per place. [2024-06-04 16:25:45,562 INFO L140 encePairwiseOnDemand]: 63/69 looper letters, 76 selfloop transitions, 3 changer transitions 3/87 dead transitions. [2024-06-04 16:25:45,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 87 transitions, 365 flow [2024-06-04 16:25:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 16:25:45,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 16:25:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-06-04 16:25:45,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384057971014493 [2024-06-04 16:25:45,567 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 127 flow. Second operand 4 states and 121 transitions. [2024-06-04 16:25:45,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 87 transitions, 365 flow [2024-06-04 16:25:45,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 87 transitions, 361 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 16:25:45,572 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 141 flow [2024-06-04 16:25:45,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-04 16:25:45,573 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2024-06-04 16:25:45,577 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 141 flow [2024-06-04 16:25:45,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-06-04 16:25:45,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:25:45,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:25:45,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 16:25:45,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-04 16:25:45,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:25:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1823989522, now seen corresponding path program 1 times [2024-06-04 16:25:45,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:25:45,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193813469] [2024-06-04 16:25:45,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:25:45,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:25:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:25:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:25:45,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:25:45,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193813469] [2024-06-04 16:25:45,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193813469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:25:45,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:25:45,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:25:45,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564669551] [2024-06-04 16:25:45,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:25:45,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 16:25:45,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:25:45,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 16:25:45,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 16:25:45,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 69 [2024-06-04 16:25:45,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2024-06-04 16:25:45,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:25:45,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 69 [2024-06-04 16:25:45,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:25:47,741 INFO L124 PetriNetUnfolderBase]: 27486/37848 cut-off events. [2024-06-04 16:25:47,742 INFO L125 PetriNetUnfolderBase]: For 3346/3346 co-relation queries the response was YES. [2024-06-04 16:25:47,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79822 conditions, 37848 events. 27486/37848 cut-off events. For 3346/3346 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 215463 event pairs, 18393 based on Foata normal form. 332/33731 useless extension candidates. Maximal degree in co-relation 53698. Up to 26966 conditions per place. [2024-06-04 16:25:47,869 INFO L140 encePairwiseOnDemand]: 64/69 looper letters, 45 selfloop transitions, 2 changer transitions 69/124 dead transitions. [2024-06-04 16:25:47,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 124 transitions, 532 flow [2024-06-04 16:25:47,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:25:47,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:25:47,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-06-04 16:25:47,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5246376811594203 [2024-06-04 16:25:47,871 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 141 flow. Second operand 5 states and 181 transitions. [2024-06-04 16:25:47,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 124 transitions, 532 flow [2024-06-04 16:25:47,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 124 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 16:25:47,875 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 153 flow [2024-06-04 16:25:47,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-04 16:25:47,875 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2024-06-04 16:25:47,876 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 153 flow [2024-06-04 16:25:47,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2024-06-04 16:25:47,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:25:47,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:25:47,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 16:25:47,878 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-04 16:25:47,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:25:47,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1582400895, now seen corresponding path program 1 times [2024-06-04 16:25:47,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:25:47,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163745426] [2024-06-04 16:25:47,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:25:47,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:25:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:25:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:25:48,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:25:48,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163745426] [2024-06-04 16:25:48,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163745426] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 16:25:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706974616] [2024-06-04 16:25:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:25:48,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:25:48,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:25:48,065 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) [2024-06-04 16:25:48,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-04 16:25:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:25:48,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-04 16:25:48,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 16:25:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:25:48,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 16:25:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:25:48,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706974616] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 16:25:48,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 16:25:48,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-06-04 16:25:48,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666474634] [2024-06-04 16:25:48,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 16:25:48,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 16:25:48,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:25:48,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 16:25:48,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-04 16:25:48,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 69 [2024-06-04 16:25:48,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 153 flow. Second operand has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 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) [2024-06-04 16:25:48,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:25:48,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 69 [2024-06-04 16:25:48,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:25:51,188 INFO L124 PetriNetUnfolderBase]: 33109/44746 cut-off events. [2024-06-04 16:25:51,188 INFO L125 PetriNetUnfolderBase]: For 11608/11608 co-relation queries the response was YES. [2024-06-04 16:25:51,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100653 conditions, 44746 events. 33109/44746 cut-off events. For 11608/11608 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 252035 event pairs, 16714 based on Foata normal form. 332/40648 useless extension candidates. Maximal degree in co-relation 100638. Up to 23047 conditions per place. [2024-06-04 16:25:51,607 INFO L140 encePairwiseOnDemand]: 60/69 looper letters, 107 selfloop transitions, 7 changer transitions 69/188 dead transitions. [2024-06-04 16:25:51,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 188 transitions, 845 flow [2024-06-04 16:25:51,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:25:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:25:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-06-04 16:25:51,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46195652173913043 [2024-06-04 16:25:51,611 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 153 flow. Second operand 8 states and 255 transitions. [2024-06-04 16:25:51,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 188 transitions, 845 flow [2024-06-04 16:25:51,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 188 transitions, 835 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 16:25:51,653 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 201 flow [2024-06-04 16:25:51,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=201, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2024-06-04 16:25:51,655 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 7 predicate places. [2024-06-04 16:25:51,655 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 201 flow [2024-06-04 16:25:51,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 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) [2024-06-04 16:25:51,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:25:51,656 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:25:51,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-04 16:25:51,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:25:51,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-04 16:25:51,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:25:51,880 INFO L85 PathProgramCache]: Analyzing trace with hash -75097420, now seen corresponding path program 2 times [2024-06-04 16:25:51,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:25:51,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283282458] [2024-06-04 16:25:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:25:51,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:25:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:25:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:25:52,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:25:52,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283282458] [2024-06-04 16:25:52,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283282458] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 16:25:52,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637244557] [2024-06-04 16:25:52,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-04 16:25:52,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:25:52,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:25:52,042 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) [2024-06-04 16:25:52,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-04 16:25:52,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-04 16:25:52,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-04 16:25:52,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-04 16:25:52,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 16:25:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-04 16:25:52,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-04 16:25:52,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637244557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:25:52,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-04 16:25:52,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-06-04 16:25:52,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28855622] [2024-06-04 16:25:52,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:25:52,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 16:25:52,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:25:52,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 16:25:52,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 16:25:52,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 69 [2024-06-04 16:25:52,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-04 16:25:52,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:25:52,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 69 [2024-06-04 16:25:52,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:25:53,343 INFO L124 PetriNetUnfolderBase]: 14649/19851 cut-off events. [2024-06-04 16:25:53,343 INFO L125 PetriNetUnfolderBase]: For 13421/13421 co-relation queries the response was YES. [2024-06-04 16:25:53,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42905 conditions, 19851 events. 14649/19851 cut-off events. For 13421/13421 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 103198 event pairs, 1589 based on Foata normal form. 2170/19936 useless extension candidates. Maximal degree in co-relation 42875. Up to 9404 conditions per place. [2024-06-04 16:25:53,377 INFO L140 encePairwiseOnDemand]: 63/69 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2024-06-04 16:25:53,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 114 transitions, 505 flow [2024-06-04 16:25:53,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:25:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:25:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-04 16:25:53,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4492753623188406 [2024-06-04 16:25:53,378 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 201 flow. Second operand 5 states and 155 transitions. [2024-06-04 16:25:53,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 114 transitions, 505 flow [2024-06-04 16:25:53,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 114 transitions, 487 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 16:25:53,580 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-06-04 16:25:53,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-06-04 16:25:53,581 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2024-06-04 16:25:53,581 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-06-04 16:25:53,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-04 16:25:53,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 12 remaining) [2024-06-04 16:25:53,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 12 remaining) [2024-06-04 16:25:53,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2024-06-04 16:25:53,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2024-06-04 16:25:53,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 12 remaining) [2024-06-04 16:25:53,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 12 remaining) [2024-06-04 16:25:53,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2024-06-04 16:25:53,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2024-06-04 16:25:53,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 12 remaining) [2024-06-04 16:25:53,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 12 remaining) [2024-06-04 16:25:53,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Thread1of1ForFork3Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2024-06-04 16:25:53,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Thread1of1ForFork3Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2024-06-04 16:25:53,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-04 16:25:53,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:25:53,797 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-06-04 16:25:53,801 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 16:25:53,801 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 16:25:53,804 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-04 16:25:53,804 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-04 16:25:53,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 04:25:53 BasicIcfg [2024-06-04 16:25:53,805 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 16:25:53,806 INFO L158 Benchmark]: Toolchain (without parser) took 14294.32ms. Allocated memory was 148.9MB in the beginning and 9.8GB in the end (delta: 9.7GB). Free memory was 75.9MB in the beginning and 8.6GB in the end (delta: -8.5GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-06-04 16:25:53,806 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 148.9MB. Free memory is still 112.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:25:53,806 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 148.9MB. Free memory is still 120.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:25:53,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.45ms. Allocated memory was 148.9MB in the beginning and 203.4MB in the end (delta: 54.5MB). Free memory was 75.7MB in the beginning and 166.2MB in the end (delta: -90.5MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2024-06-04 16:25:53,807 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.28ms. Allocated memory is still 203.4MB. Free memory was 166.2MB in the beginning and 164.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 16:25:53,807 INFO L158 Benchmark]: Boogie Preprocessor took 61.58ms. Allocated memory is still 203.4MB. Free memory was 164.1MB in the beginning and 161.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 16:25:53,808 INFO L158 Benchmark]: RCFGBuilder took 803.06ms. Allocated memory is still 203.4MB. Free memory was 161.0MB in the beginning and 159.7MB in the end (delta: 1.3MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. [2024-06-04 16:25:53,808 INFO L158 Benchmark]: TraceAbstraction took 13069.13ms. Allocated memory was 203.4MB in the beginning and 9.8GB in the end (delta: 9.6GB). Free memory was 158.7MB in the beginning and 8.6GB in the end (delta: -8.5GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-06-04 16:25:53,809 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 0.18ms. Allocated memory is still 148.9MB. Free memory is still 112.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 148.9MB. Free memory is still 120.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.45ms. Allocated memory was 148.9MB in the beginning and 203.4MB in the end (delta: 54.5MB). Free memory was 75.7MB in the beginning and 166.2MB in the end (delta: -90.5MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.28ms. Allocated memory is still 203.4MB. Free memory was 166.2MB in the beginning and 164.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.58ms. Allocated memory is still 203.4MB. Free memory was 164.1MB in the beginning and 161.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 803.06ms. Allocated memory is still 203.4MB. Free memory was 161.0MB in the beginning and 159.7MB in the end (delta: 1.3MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. * TraceAbstraction took 13069.13ms. Allocated memory was 203.4MB in the beginning and 9.8GB in the end (delta: 9.6GB). Free memory was 158.7MB in the beginning and 8.6GB in the end (delta: -8.5GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 92]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 93]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 139]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 140]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 102 locations, 12 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: 13.0s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 562 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 510 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1267 IncrementalHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 12 mSDtfsCounter, 1267 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred in iteration=4, InterpolantAutomatonStates: 25, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 100 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 609 SizeOfPredicates, 1 NumberOfNonLiveVariables, 267 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 3/9 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! [2024-06-04 16:25:53,827 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