./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/03_incdec.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/03_incdec.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 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/03_incdec.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/03_incdec.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:01:09,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:01:09,745 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:01:09,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:01:09,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:01:09,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:01:09,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:01:09,777 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:01:09,777 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:01:09,781 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:01:09,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:01:09,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:01:09,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:01:09,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:01:09,783 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:01:09,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:01:09,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:01:09,784 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:01:09,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:01:09,785 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:01:09,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:01:09,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:01:09,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:01:09,786 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:01:09,786 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:01:09,786 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:01:09,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:01:09,787 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:01:09,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:01:09,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:01:09,788 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:01:09,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:01:09,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:01:09,789 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:01:09,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:01:09,789 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:01:09,790 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:01:09,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:01:09,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:01:09,791 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:01:09,791 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:01:09,791 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:01:09,791 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:01:09,792 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:01:10,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:01:10,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:01:10,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:01:10,069 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:01:10,070 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:01:10,071 INFO L431 ainManager$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/03_incdec.yml/witness.yml [2024-01-31 16:01:10,201 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:01:10,201 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:01:10,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/03_incdec.i [2024-01-31 16:01:11,411 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:01:11,566 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:01:11,567 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i [2024-01-31 16:01:11,577 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb194675a/a6566fd061e84b03a932a96fe3dd4b1e/FLAGdafc7c9dc [2024-01-31 16:01:11,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb194675a/a6566fd061e84b03a932a96fe3dd4b1e [2024-01-31 16:01:11,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:01:11,964 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:01:11,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:01:11,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:01:11,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:01:11,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:10" (1/2) ... [2024-01-31 16:01:11,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d3c77 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:11, skipping insertion in model container [2024-01-31 16:01:11,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:10" (1/2) ... [2024-01-31 16:01:11,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@73c9078c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:11, skipping insertion in model container [2024-01-31 16:01:11,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:01:11" (2/2) ... [2024-01-31 16:01:11,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d3c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:11, skipping insertion in model container [2024-01-31 16:01:11,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:01:11" (2/2) ... [2024-01-31 16:01:11,983 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:01:12,020 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:01:12,021 INFO L98 nessWitnessExtractor]: Location invariant before [L731-L731] (unsigned long )arg == 0UL [2024-01-31 16:01:12,021 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] (0U == inc_v) && (inc_v == 0U) [2024-01-31 16:01:12,021 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] (0U == inc_v) && (inc_v == 0U) [2024-01-31 16:01:12,021 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] (unsigned long )arg == 0UL [2024-01-31 16:01:12,021 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] ((unsigned long )arg == 0UL) && (r != 0) [2024-01-31 16:01:12,022 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] (0U == inc_v) && (inc_v == 0U) [2024-01-31 16:01:12,022 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-01-31 16:01:12,022 INFO L98 nessWitnessExtractor]: Location invariant after [L732-L732] ((unsigned long )arg == 0UL) && (r != 0) [2024-01-31 16:01:12,022 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (r == 0) && ((unsigned long )arg == 0UL) [2024-01-31 16:01:12,022 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] (0U == inc_v) && (inc_v == 0U) [2024-01-31 16:01:12,022 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (0U == inc_v) && (inc_v == 0U) [2024-01-31 16:01:12,022 INFO L98 nessWitnessExtractor]: Location invariant after [L731-L731] (unsigned long )arg == 0UL [2024-01-31 16:01:12,047 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:01:12,228 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/03_incdec.i[30534,30547] [2024-01-31 16:01:12,233 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/03_incdec.i[30928,30941] [2024-01-31 16:01:12,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:01:12,247 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:01:12,320 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/03_incdec.i[30534,30547] [2024-01-31 16:01:12,329 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/03_incdec.i[30928,30941] [2024-01-31 16:01:12,337 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:01:12,337 WARN L424 MainDispatcher]: Unable to annotate r = __VERIFIER_nondet_int() with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:01:12,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:01:12,376 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:01:12,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12 WrapperNode [2024-01-31 16:01:12,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:01:12,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:01:12,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:01:12,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:01:12,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12" (1/1) ... [2024-01-31 16:01:12,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12" (1/1) ... [2024-01-31 16:01:12,476 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 142 [2024-01-31 16:01:12,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:01:12,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:01:12,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:01:12,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:01:12,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12" (1/1) ... [2024-01-31 16:01:12,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12" (1/1) ... [2024-01-31 16:01:12,491 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12" (1/1) ... [2024-01-31 16:01:12,504 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 16:01:12,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12" (1/1) ... [2024-01-31 16:01:12,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12" (1/1) ... [2024-01-31 16:01:12,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12" (1/1) ... [2024-01-31 16:01:12,515 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12" (1/1) ... [2024-01-31 16:01:12,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12" (1/1) ... [2024-01-31 16:01:12,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12" (1/1) ... [2024-01-31 16:01:12,521 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:01:12,521 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:01:12,522 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:01:12,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:01:12,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12" (1/1) ... [2024-01-31 16:01:12,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:01:12,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:01:12,565 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 16:01:12,584 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 16:01:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-31 16:01:12,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-31 16:01:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:01:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:01:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:01:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:01:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:01:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:01:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:01:12,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:01:12,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:01:12,617 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 16:01:12,725 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:01:12,727 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:01:12,992 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:01:12,992 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:01:13,126 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:01:13,127 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-31 16:01:13,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:01:13 BoogieIcfgContainer [2024-01-31 16:01:13,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:01:13,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:01:13,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:01:13,131 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:01:13,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:10" (1/4) ... [2024-01-31 16:01:13,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200840bc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:01:13, skipping insertion in model container [2024-01-31 16:01:13,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:01:11" (2/4) ... [2024-01-31 16:01:13,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200840bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:01:13, skipping insertion in model container [2024-01-31 16:01:13,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:12" (3/4) ... [2024-01-31 16:01:13,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200840bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:01:13, skipping insertion in model container [2024-01-31 16:01:13,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:01:13" (4/4) ... [2024-01-31 16:01:13,134 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec.i [2024-01-31 16:01:13,147 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:01:13,147 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-01-31 16:01:13,147 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:01:13,197 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:01:13,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 54 transitions, 112 flow [2024-01-31 16:01:13,260 INFO L124 PetriNetUnfolderBase]: 5/56 cut-off events. [2024-01-31 16:01:13,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:01:13,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 56 events. 5/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-01-31 16:01:13,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 54 transitions, 112 flow [2024-01-31 16:01:13,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 54 transitions, 112 flow [2024-01-31 16:01:13,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:01:13,278 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;@91346ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:01:13,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-01-31 16:01:13,281 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:01:13,281 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-01-31 16:01:13,281 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:01:13,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:13,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:01:13,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-01-31 16:01:13,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash 440460337, now seen corresponding path program 1 times [2024-01-31 16:01:13,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:13,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563305449] [2024-01-31 16:01:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:13,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:13,911 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 16:01:13,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:13,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563305449] [2024-01-31 16:01:13,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563305449] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:13,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:13,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:13,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814877204] [2024-01-31 16:01:13,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:13,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:13,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:13,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:13,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:13,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 54 [2024-01-31 16:01:13,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 16:01:13,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:13,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 54 [2024-01-31 16:01:13,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:14,029 INFO L124 PetriNetUnfolderBase]: 45/174 cut-off events. [2024-01-31 16:01:14,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:01:14,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 174 events. 45/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 758 event pairs, 0 based on Foata normal form. 9/162 useless extension candidates. Maximal degree in co-relation 265. Up to 93 conditions per place. [2024-01-31 16:01:14,032 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 24 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-01-31 16:01:14,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 160 flow [2024-01-31 16:01:14,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-01-31 16:01:14,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6342592592592593 [2024-01-31 16:01:14,050 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 112 flow. Second operand 4 states and 137 transitions. [2024-01-31 16:01:14,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 160 flow [2024-01-31 16:01:14,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:01:14,056 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 106 flow [2024-01-31 16:01:14,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2024-01-31 16:01:14,066 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-01-31 16:01:14,066 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 106 flow [2024-01-31 16:01:14,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 16:01:14,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:14,068 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-31 16:01:14,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:01:14,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 20 more)] === [2024-01-31 16:01:14,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:14,073 INFO L85 PathProgramCache]: Analyzing trace with hash 769333916, now seen corresponding path program 1 times [2024-01-31 16:01:14,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:14,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649911019] [2024-01-31 16:01:14,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:14,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:14,108 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:01:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:14,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:01:14,155 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:01:14,156 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-01-31 16:01:14,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 23 remaining) [2024-01-31 16:01:14,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 23 remaining) [2024-01-31 16:01:14,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 23 remaining) [2024-01-31 16:01:14,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 23 remaining) [2024-01-31 16:01:14,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 23 remaining) [2024-01-31 16:01:14,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 23 remaining) [2024-01-31 16:01:14,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 23 remaining) [2024-01-31 16:01:14,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 23 remaining) [2024-01-31 16:01:14,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (13 of 23 remaining) [2024-01-31 16:01:14,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 23 remaining) [2024-01-31 16:01:14,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (11 of 23 remaining) [2024-01-31 16:01:14,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 23 remaining) [2024-01-31 16:01:14,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 23 remaining) [2024-01-31 16:01:14,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 23 remaining) [2024-01-31 16:01:14,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 23 remaining) [2024-01-31 16:01:14,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 23 remaining) [2024-01-31 16:01:14,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 23 remaining) [2024-01-31 16:01:14,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 23 remaining) [2024-01-31 16:01:14,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 23 remaining) [2024-01-31 16:01:14,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (2 of 23 remaining) [2024-01-31 16:01:14,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 23 remaining) [2024-01-31 16:01:14,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (0 of 23 remaining) [2024-01-31 16:01:14,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:01:14,178 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-01-31 16:01:14,181 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:01:14,182 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-31 16:01:14,250 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:01:14,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 103 transitions, 216 flow [2024-01-31 16:01:14,278 INFO L124 PetriNetUnfolderBase]: 10/108 cut-off events. [2024-01-31 16:01:14,279 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:01:14,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 108 events. 10/108 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 408 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 99. Up to 3 conditions per place. [2024-01-31 16:01:14,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 103 transitions, 216 flow [2024-01-31 16:01:14,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 103 transitions, 216 flow [2024-01-31 16:01:14,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:01:14,283 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;@91346ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:01:14,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-01-31 16:01:14,285 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:01:14,286 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-31 16:01:14,286 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-31 16:01:14,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:14,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:01:14,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-31 16:01:14,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:14,287 INFO L85 PathProgramCache]: Analyzing trace with hash 538801416, now seen corresponding path program 1 times [2024-01-31 16:01:14,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:14,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166931168] [2024-01-31 16:01:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:14,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:14,367 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 16:01:14,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:14,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166931168] [2024-01-31 16:01:14,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166931168] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:14,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:14,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:14,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676466203] [2024-01-31 16:01:14,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:14,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:14,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:14,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:14,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:14,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 103 [2024-01-31 16:01:14,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 103 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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 16:01:14,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:14,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 103 [2024-01-31 16:01:14,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:15,048 INFO L124 PetriNetUnfolderBase]: 2073/4365 cut-off events. [2024-01-31 16:01:15,049 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-01-31 16:01:15,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7499 conditions, 4365 events. 2073/4365 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 34462 event pairs, 903 based on Foata normal form. 288/4248 useless extension candidates. Maximal degree in co-relation 7126. Up to 2970 conditions per place. [2024-01-31 16:01:15,089 INFO L140 encePairwiseOnDemand]: 94/103 looper letters, 64 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2024-01-31 16:01:15,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 119 transitions, 385 flow [2024-01-31 16:01:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:15,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2024-01-31 16:01:15,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7014563106796117 [2024-01-31 16:01:15,096 INFO L175 Difference]: Start difference. First operand has 98 places, 103 transitions, 216 flow. Second operand 4 states and 289 transitions. [2024-01-31 16:01:15,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 119 transitions, 385 flow [2024-01-31 16:01:15,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 119 transitions, 385 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:01:15,100 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 206 flow [2024-01-31 16:01:15,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-01-31 16:01:15,101 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 0 predicate places. [2024-01-31 16:01:15,101 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 206 flow [2024-01-31 16:01:15,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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 16:01:15,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:15,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:01:15,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:01:15,102 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-31 16:01:15,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:15,103 INFO L85 PathProgramCache]: Analyzing trace with hash -477024640, now seen corresponding path program 1 times [2024-01-31 16:01:15,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:15,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228202080] [2024-01-31 16:01:15,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:15,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:15,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:01:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:15,131 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:01:15,131 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:01:15,132 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 34 remaining) [2024-01-31 16:01:15,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 34 remaining) [2024-01-31 16:01:15,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 34 remaining) [2024-01-31 16:01:15,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 34 remaining) [2024-01-31 16:01:15,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 34 remaining) [2024-01-31 16:01:15,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 34 remaining) [2024-01-31 16:01:15,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 34 remaining) [2024-01-31 16:01:15,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 34 remaining) [2024-01-31 16:01:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 34 remaining) [2024-01-31 16:01:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (24 of 34 remaining) [2024-01-31 16:01:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 34 remaining) [2024-01-31 16:01:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (22 of 34 remaining) [2024-01-31 16:01:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 34 remaining) [2024-01-31 16:01:15,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 34 remaining) [2024-01-31 16:01:15,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 34 remaining) [2024-01-31 16:01:15,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 34 remaining) [2024-01-31 16:01:15,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 34 remaining) [2024-01-31 16:01:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 34 remaining) [2024-01-31 16:01:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 34 remaining) [2024-01-31 16:01:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 34 remaining) [2024-01-31 16:01:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 34 remaining) [2024-01-31 16:01:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (12 of 34 remaining) [2024-01-31 16:01:15,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 34 remaining) [2024-01-31 16:01:15,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (10 of 34 remaining) [2024-01-31 16:01:15,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 34 remaining) [2024-01-31 16:01:15,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 34 remaining) [2024-01-31 16:01:15,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 34 remaining) [2024-01-31 16:01:15,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 34 remaining) [2024-01-31 16:01:15,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 34 remaining) [2024-01-31 16:01:15,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 34 remaining) [2024-01-31 16:01:15,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 34 remaining) [2024-01-31 16:01:15,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (2 of 34 remaining) [2024-01-31 16:01:15,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 34 remaining) [2024-01-31 16:01:15,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (0 of 34 remaining) [2024-01-31 16:01:15,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:01:15,140 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-01-31 16:01:15,145 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2024-01-31 16:01:15,145 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:01:15,167 INFO L503 ceAbstractionStarter]: Automizer considered 9 witness invariants [2024-01-31 16:01:15,168 INFO L504 ceAbstractionStarter]: WitnessConsidered=9 [2024-01-31 16:01:15,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:01:15 BasicIcfg [2024-01-31 16:01:15,169 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:01:15,170 INFO L158 Benchmark]: Toolchain (without parser) took 3205.65ms. Allocated memory was 241.2MB in the beginning and 398.5MB in the end (delta: 157.3MB). Free memory was 167.1MB in the beginning and 248.9MB in the end (delta: -81.9MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. [2024-01-31 16:01:15,170 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 241.2MB. Free memory is still 199.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:01:15,170 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 241.2MB. Free memory is still 214.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:01:15,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.69ms. Allocated memory is still 241.2MB. Free memory was 167.1MB in the beginning and 140.9MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-01-31 16:01:15,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.08ms. Allocated memory is still 241.2MB. Free memory was 140.9MB in the beginning and 209.1MB in the end (delta: -68.3MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2024-01-31 16:01:15,171 INFO L158 Benchmark]: Boogie Preprocessor took 42.01ms. Allocated memory is still 241.2MB. Free memory was 209.1MB in the beginning and 206.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:01:15,171 INFO L158 Benchmark]: RCFGBuilder took 605.71ms. Allocated memory is still 241.2MB. Free memory was 206.9MB in the beginning and 174.4MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-01-31 16:01:15,172 INFO L158 Benchmark]: TraceAbstraction took 2040.40ms. Allocated memory was 241.2MB in the beginning and 398.5MB in the end (delta: 157.3MB). Free memory was 173.3MB in the beginning and 248.9MB in the end (delta: -75.6MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. [2024-01-31 16:01:15,174 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 241.2MB. Free memory is still 199.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.18ms. Allocated memory is still 241.2MB. Free memory is still 214.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.69ms. Allocated memory is still 241.2MB. Free memory was 167.1MB in the beginning and 140.9MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.08ms. Allocated memory is still 241.2MB. Free memory was 140.9MB in the beginning and 209.1MB in the end (delta: -68.3MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.01ms. Allocated memory is still 241.2MB. Free memory was 209.1MB in the beginning and 206.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 605.71ms. Allocated memory is still 241.2MB. Free memory was 206.9MB in the beginning and 174.4MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2040.40ms. Allocated memory was 241.2MB in the beginning and 398.5MB in the end (delta: 157.3MB). Free memory was 173.3MB in the beginning and 248.9MB in the end (delta: -75.6MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 732]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L689] 0 volatile unsigned value = 0, m = 0; [L700] 0 volatile unsigned inc_flag = 0; [L701] 0 volatile unsigned dec_flag = 0; [L737] 0 pthread_t t; VAL [dec_flag=0, inc_flag=0, m=0, t={3:0}, value=0] [L738] COND TRUE 0 1 [L738] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [dec_flag=0, inc_flag=0, m=0, t={3:0}, value=0] [L731] 1 int r = __VERIFIER_nondet_int(); [L732] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, dec_flag=0, inc_flag=0, m=0, r=0, value=0] [L732] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]],BinaryExpression[COMPNEQ,IdentifierExpression[r],IntegerLiteral[0]]]]] VAL [arg={0:0}, arg={0:0}, dec_flag=0, inc_flag=0, m=0, r=0, value=0] - UnprovableResult [Line: 732]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 705]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 94 locations, 23 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: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 6 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 0.5s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 138 locations, 34 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: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 109 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 109 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2024-01-31 16:01:15,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE