./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/28_buggy_simple_loop1_vf.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/pthread-ext/28_buggy_simple_loop1_vf.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/28_buggy_simple_loop1_vf.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-?-80b1b13-m [2024-01-31 17:32:24,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:32:24,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:32:24,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:32:24,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:32:24,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:32:24,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:32:24,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:32:24,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:32:24,711 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:32:24,711 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:32:24,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:32:24,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:32:24,712 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:32:24,712 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:32:24,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:32:24,713 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:32:24,713 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:32:24,714 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:32:24,714 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:32:24,714 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:32:24,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:32:24,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:32:24,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:32:24,715 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:32:24,715 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:32:24,716 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:32:24,716 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:32:24,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:32:24,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:32:24,717 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:32:24,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:32:24,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:32:24,717 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:32:24,717 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:32:24,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:32:24,718 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:32:24,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:32:24,718 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:32:24,718 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:32:24,719 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:32:24,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:32:24,719 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:32:24,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:32:24,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:32:24,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:32:24,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:32:24,915 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:32:24,916 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:32:24,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2024-01-31 17:32:25,871 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:32:26,120 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:32:26,121 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2024-01-31 17:32:26,137 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f652b2a/12fa781ae4224712889f713cc460eb07/FLAGba1bf6405 [2024-01-31 17:32:26,453 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f652b2a/12fa781ae4224712889f713cc460eb07 [2024-01-31 17:32:26,461 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:32:26,462 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:32:26,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/28_buggy_simple_loop1_vf.yml/witness.yml [2024-01-31 17:32:26,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:32:26,634 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:32:26,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:32:26,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:32:26,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:32:26,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:32:26" (1/2) ... [2024-01-31 17:32:26,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8b7654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:32:26, skipping insertion in model container [2024-01-31 17:32:26,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:32:26" (1/2) ... [2024-01-31 17:32:26,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6aaeae19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:32:26, skipping insertion in model container [2024-01-31 17:32:26,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:32:26" (2/2) ... [2024-01-31 17:32:26,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8b7654 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:26, skipping insertion in model container [2024-01-31 17:32:26,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:32:26" (2/2) ... [2024-01-31 17:32:26,641 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:32:26,778 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:32:26,779 INFO L98 nessWitnessExtractor]: Location invariant after [L686-L686] (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )i) + (long long )x >= 0LL) && ((2147483648LL + (long long )i) + (long long )y >= 0LL)) && ((2147483648LL + (long long )i) + (long long )z >= 0LL)) && ((2147483648LL + (long long )j) + (long long )x >= 0LL)) && ((2147483648LL + (long long )j) + (long long )y >= 0LL)) && ((2147483648LL + (long long )j) + (long long )z >= 0LL)) && ((2147483648LL + (long long )k) + (long long )x >= 0LL)) && ((2147483648LL + (long long )k) + (long long )y >= 0LL)) && ((2147483648LL + (long long )k) + (long long )z >= 0LL)) && ((4294967296LL + (long long )i) + (long long )j >= 0LL)) && ((4294967296LL + (long long )i) + (long long )k >= 0LL)) && ((4294967296LL + (long long )j) + (long long )k >= 0LL)) && ((2147483647LL - (long long )i) + (long long )x >= 0LL)) && ((2147483647LL - (long long )i) + (long long )y >= 0LL)) && ((2147483647LL - (long long )i) + (long long )z >= 0LL)) && ((2147483647LL - (long long )j) + (long long )x >= 0LL)) && ((2147483647LL - (long long )j) + (long long )y >= 0LL)) && ((2147483647LL - (long long )j) + (long long )z >= 0LL)) && ((2147483647LL - (long long )k) + (long long )x >= 0LL)) && ((2147483647LL - (long long )k) + (long long )y >= 0LL)) && ((2147483647LL - (long long )k) + (long long )z >= 0LL)) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL - (long long )x) + (long long )z >= 0LL)) && ((4294967295LL - (long long )y) + (long long )z >= 0LL)) && ((4294967295LL - (long long )i) + (long long )j >= 0LL)) && ((4294967295LL - (long long )i) + (long long )k >= 0LL)) && ((4294967295LL - (long long )j) + (long long )k >= 0LL)) && ((long long )x + (long long )y >= 0LL)) && ((long long )x + (long long )z >= 0LL)) && ((long long )y + (long long )z >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )z >= 0LL)) && ((4294967295LL + (long long )y) - (long long )z >= 0LL)) && ((4294967295LL + (long long )i) - (long long )j >= 0LL)) && ((4294967295LL + (long long )i) - (long long )k >= 0LL)) && ((4294967295LL + (long long )j) - (long long )k >= 0LL)) && ((6442450943LL + (long long )i) - (long long )x >= 0LL)) && ((6442450943LL + (long long )i) - (long long )y >= 0LL)) && ((6442450943LL + (long long )i) - (long long )z >= 0LL)) && ((6442450943LL + (long long )j) - (long long )x >= 0LL)) && ((6442450943LL + (long long )j) - (long long )y >= 0LL)) && ((6442450943LL + (long long )j) - (long long )z >= 0LL)) && ((6442450943LL + (long long )k) - (long long )x >= 0LL)) && ((6442450943LL + (long long )k) - (long long )y >= 0LL)) && ((6442450943LL + (long long )k) - (long long )z >= 0LL)) && ((4294967294LL - (long long )i) - (long long )j >= 0LL)) && ((4294967294LL - (long long )i) - (long long )k >= 0LL)) && ((4294967294LL - (long long )j) - (long long )k >= 0LL)) && ((6442450942LL - (long long )i) - (long long )x >= 0LL)) && ((6442450942LL - (long long )i) - (long long )y >= 0LL)) && ((6442450942LL - (long long )i) - (long long )z >= 0LL)) && ((6442450942LL - (long long )j) - (long long )x >= 0LL)) && ((6442450942LL - (long long )j) - (long long )y >= 0LL)) && ((6442450942LL - (long long )j) - (long long )z >= 0LL)) && ((6442450942LL - (long long )k) - (long long )x >= 0LL)) && ((6442450942LL - (long long )k) - (long long )y >= 0LL)) && ((6442450942LL - (long long )k) - (long long )z >= 0LL)) && ((8589934590LL - (long long )x) - (long long )y >= 0LL)) && ((8589934590LL - (long long )x) - (long long )z >= 0LL)) && ((8589934590LL - (long long )y) - (long long )z >= 0LL)) && ((unsigned long )arg == 0UL) [2024-01-31 17:32:26,779 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L695] ((((((((0 <= i) && (1 <= j)) && (1 <= k)) && (x <= 2147483647U)) && ((-2LL + (long long )j) + (long long )k >= 0LL)) && ((-1LL + (long long )i) + (long long )j >= 0LL)) && ((-1LL + (long long )i) + (long long )k >= 0LL)) && ((0LL - (long long )i) + (long long )j >= 0LL)) && ((unsigned long )arg == 0UL) [2024-01-31 17:32:26,816 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:32:27,106 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2024-01-31 17:32:27,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:32:27,122 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:32:27,159 WARN L424 MainDispatcher]: Unable to annotate unsigned int with a witness entry [2024-01-31 17:32:27,167 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] Start Parsing Local [2024-01-31 17:32:27,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:32:27,227 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:32:27,227 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27 WrapperNode [2024-01-31 17:32:27,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:32:27,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:32:27,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:32:27,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:32:27,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27" (1/1) ... [2024-01-31 17:32:27,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27" (1/1) ... [2024-01-31 17:32:27,274 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2024-01-31 17:32:27,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:32:27,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:32:27,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:32:27,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:32:27,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27" (1/1) ... [2024-01-31 17:32:27,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27" (1/1) ... [2024-01-31 17:32:27,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27" (1/1) ... [2024-01-31 17:32:27,306 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 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]. [2024-01-31 17:32:27,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27" (1/1) ... [2024-01-31 17:32:27,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27" (1/1) ... [2024-01-31 17:32:27,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27" (1/1) ... [2024-01-31 17:32:27,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27" (1/1) ... [2024-01-31 17:32:27,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27" (1/1) ... [2024-01-31 17:32:27,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27" (1/1) ... [2024-01-31 17:32:27,324 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:32:27,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:32:27,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:32:27,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:32:27,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27" (1/1) ... [2024-01-31 17:32:27,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:32:27,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:32:27,403 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) [2024-01-31 17:32:27,419 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 [2024-01-31 17:32:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-31 17:32:27,444 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-31 17:32:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:32:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:32:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:32:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:32:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:32:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:32:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:32:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:32:27,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:32:27,447 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:32:27,531 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:32:27,534 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:32:27,737 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:32:27,737 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:32:27,806 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:32:27,806 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-31 17:32:27,806 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:32:27 BoogieIcfgContainer [2024-01-31 17:32:27,806 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:32:27,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:32:27,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:32:27,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:32:27,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:32:26" (1/4) ... [2024-01-31 17:32:27,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dc3785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:32:27, skipping insertion in model container [2024-01-31 17:32:27,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:32:26" (2/4) ... [2024-01-31 17:32:27,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dc3785 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:32:27, skipping insertion in model container [2024-01-31 17:32:27,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:32:27" (3/4) ... [2024-01-31 17:32:27,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dc3785 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:32:27, skipping insertion in model container [2024-01-31 17:32:27,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:32:27" (4/4) ... [2024-01-31 17:32:27,816 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2024-01-31 17:32:27,828 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:32:27,828 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-31 17:32:27,828 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:32:27,893 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:32:27,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 22 transitions, 48 flow [2024-01-31 17:32:27,947 INFO L124 PetriNetUnfolderBase]: 5/24 cut-off events. [2024-01-31 17:32:27,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:32:27,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 24 events. 5/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-01-31 17:32:27,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 22 transitions, 48 flow [2024-01-31 17:32:27,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 22 transitions, 48 flow [2024-01-31 17:32:27,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:32:27,974 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;@236b2fa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:32:27,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 17:32:27,985 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:32:27,986 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-01-31 17:32:27,986 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:32:27,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:32:27,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-31 17:32:27,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 17:32:27,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:32:27,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1731506463, now seen corresponding path program 1 times [2024-01-31 17:32:27,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:32:27,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358229998] [2024-01-31 17:32:27,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:32:27,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:32:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:32:28,145 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 17:32:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:32:28,190 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 17:32:28,191 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 17:32:28,192 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-01-31 17:32:28,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-01-31 17:32:28,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-01-31 17:32:28,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 5 remaining) [2024-01-31 17:32:28,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-01-31 17:32:28,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:32:28,195 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-31 17:32:28,197 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 17:32:28,197 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-31 17:32:28,225 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:32:28,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 39 transitions, 88 flow [2024-01-31 17:32:28,233 INFO L124 PetriNetUnfolderBase]: 10/44 cut-off events. [2024-01-31 17:32:28,234 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:32:28,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 44 events. 10/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 35. Up to 3 conditions per place. [2024-01-31 17:32:28,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 39 transitions, 88 flow [2024-01-31 17:32:28,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 39 transitions, 88 flow [2024-01-31 17:32:28,237 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:32:28,237 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;@236b2fa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:32:28,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-31 17:32:28,242 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:32:28,242 INFO L124 PetriNetUnfolderBase]: 4/21 cut-off events. [2024-01-31 17:32:28,242 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-31 17:32:28,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:32:28,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:32:28,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 17:32:28,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:32:28,243 INFO L85 PathProgramCache]: Analyzing trace with hash -735719957, now seen corresponding path program 1 times [2024-01-31 17:32:28,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:32:28,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71943875] [2024-01-31 17:32:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:32:28,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:32:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:32:28,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:32:28,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:32:28,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71943875] [2024-01-31 17:32:28,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71943875] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:32:28,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:32:28,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:32:28,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308729724] [2024-01-31 17:32:28,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:32:28,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:32:28,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:32:28,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:32:28,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:32:28,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-01-31 17:32:28,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 39 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-01-31 17:32:28,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:32:28,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-01-31 17:32:28,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:32:28,823 INFO L124 PetriNetUnfolderBase]: 693/1265 cut-off events. [2024-01-31 17:32:28,824 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-01-31 17:32:28,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2296 conditions, 1265 events. 693/1265 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6951 event pairs, 234 based on Foata normal form. 105/1132 useless extension candidates. Maximal degree in co-relation 921. Up to 621 conditions per place. [2024-01-31 17:32:28,868 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 49 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2024-01-31 17:32:28,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 67 transitions, 264 flow [2024-01-31 17:32:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:32:28,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:32:28,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-01-31 17:32:28,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2024-01-31 17:32:28,883 INFO L175 Difference]: Start difference. First operand has 34 places, 39 transitions, 88 flow. Second operand 5 states and 126 transitions. [2024-01-31 17:32:28,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 67 transitions, 264 flow [2024-01-31 17:32:28,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 67 transitions, 264 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:32:28,891 INFO L231 Difference]: Finished difference. Result has 39 places, 40 transitions, 120 flow [2024-01-31 17:32:28,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=39, PETRI_TRANSITIONS=40} [2024-01-31 17:32:28,896 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2024-01-31 17:32:28,897 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 40 transitions, 120 flow [2024-01-31 17:32:28,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-01-31 17:32:28,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:32:28,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:32:28,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:32:28,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 17:32:28,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:32:28,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1332481907, now seen corresponding path program 1 times [2024-01-31 17:32:28,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:32:28,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509433418] [2024-01-31 17:32:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:32:28,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:32:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:32:28,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 17:32:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:32:28,976 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 17:32:28,978 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 17:32:28,978 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-01-31 17:32:28,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-01-31 17:32:28,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-01-31 17:32:28,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-01-31 17:32:28,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 7 remaining) [2024-01-31 17:32:28,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-01-31 17:32:28,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 7 remaining) [2024-01-31 17:32:28,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:32:28,982 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-01-31 17:32:28,988 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2024-01-31 17:32:28,988 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 17:32:29,010 INFO L503 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-01-31 17:32:29,010 INFO L504 ceAbstractionStarter]: WitnessConsidered=1 [2024-01-31 17:32:29,011 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 05:32:29 BasicIcfg [2024-01-31 17:32:29,011 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 17:32:29,014 INFO L158 Benchmark]: Toolchain (without parser) took 2377.74ms. Allocated memory was 151.0MB in the beginning and 192.9MB in the end (delta: 41.9MB). Free memory was 114.4MB in the beginning and 113.3MB in the end (delta: 1.1MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2024-01-31 17:32:29,015 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 109.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:32:29,015 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 151.0MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:32:29,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 593.02ms. Allocated memory is still 151.0MB. Free memory was 114.4MB in the beginning and 67.0MB in the end (delta: 47.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-01-31 17:32:29,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.06ms. Allocated memory is still 151.0MB. Free memory was 67.0MB in the beginning and 65.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:32:29,017 INFO L158 Benchmark]: Boogie Preprocessor took 48.24ms. Allocated memory is still 151.0MB. Free memory was 65.1MB in the beginning and 63.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:32:29,020 INFO L158 Benchmark]: RCFGBuilder took 481.79ms. Allocated memory is still 151.0MB. Free memory was 63.0MB in the beginning and 119.7MB in the end (delta: -56.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-01-31 17:32:29,021 INFO L158 Benchmark]: TraceAbstraction took 1198.94ms. Allocated memory was 151.0MB in the beginning and 192.9MB in the end (delta: 41.9MB). Free memory was 118.5MB in the beginning and 113.3MB in the end (delta: 5.2MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2024-01-31 17:32:29,022 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 109.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 151.0MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 593.02ms. Allocated memory is still 151.0MB. Free memory was 114.4MB in the beginning and 67.0MB in the end (delta: 47.4MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.06ms. Allocated memory is still 151.0MB. Free memory was 67.0MB in the beginning and 65.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.24ms. Allocated memory is still 151.0MB. Free memory was 65.1MB in the beginning and 63.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 481.79ms. Allocated memory is still 151.0MB. Free memory was 63.0MB in the beginning and 119.7MB in the end (delta: -56.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1198.94ms. Allocated memory was 151.0MB in the beginning and 192.9MB in the end (delta: 41.9MB). Free memory was 118.5MB in the beginning and 113.3MB in the end (delta: 5.2MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L700] 0 pthread_t t; VAL [t={3:0}] [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, t={3:0}] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [arg={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i