./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-1.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/triangular-1.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/triangular-1.i ./goblint.2024-05-21_14-57-05.files/protection/triangular-1.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-76401ed-m [2024-06-20 15:12:48,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 15:12:48,557 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 15:12:48,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 15:12:48,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 15:12:48,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 15:12:48,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 15:12:48,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 15:12:48,583 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 15:12:48,586 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 15:12:48,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 15:12:48,586 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 15:12:48,587 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 15:12:48,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 15:12:48,588 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 15:12:48,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 15:12:48,589 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 15:12:48,589 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 15:12:48,589 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 15:12:48,589 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 15:12:48,590 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 15:12:48,591 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 15:12:48,591 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 15:12:48,591 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 15:12:48,591 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 15:12:48,591 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 15:12:48,592 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 15:12:48,592 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 15:12:48,593 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 15:12:48,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 15:12:48,593 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 15:12:48,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 15:12:48,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:12:48,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 15:12:48,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 15:12:48,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 15:12:48,595 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 15:12:48,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 15:12:48,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 15:12:48,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 15:12:48,596 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 15:12:48,596 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 15:12:48,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 15:12:48,596 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 15:12:48,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 15:12:48,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 15:12:48,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 15:12:48,799 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 15:12:48,799 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 15:12:48,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/triangular-1.yml/witness.yml [2024-06-20 15:12:48,869 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 15:12:48,869 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 15:12:48,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2024-06-20 15:12:49,840 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 15:12:50,029 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 15:12:50,029 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2024-06-20 15:12:50,043 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/400fb414f/82b5ec3153a54862a80ee0b436d8ce98/FLAG653632308 [2024-06-20 15:12:50,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/400fb414f/82b5ec3153a54862a80ee0b436d8ce98 [2024-06-20 15:12:50,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 15:12:50,057 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 15:12:50,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 15:12:50,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 15:12:50,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 15:12:50,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:12:48" (1/2) ... [2024-06-20 15:12:50,065 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33edcb93 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:12:50, skipping insertion in model container [2024-06-20 15:12:50,065 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:12:48" (1/2) ... [2024-06-20 15:12:50,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d3c470d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:12:50, skipping insertion in model container [2024-06-20 15:12:50,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:12:50" (2/2) ... [2024-06-20 15:12:50,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33edcb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50, skipping insertion in model container [2024-06-20 15:12:50,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:12:50" (2/2) ... [2024-06-20 15:12:50,069 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 15:12:50,089 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 15:12:50,090 INFO L97 edCorrectnessWitness]: Location invariant before [L714-L714] (! multithreaded || (4 <= j && j % 2 == 0)) && (! multithreaded || (3 <= i && i % 2 == 1)) [2024-06-20 15:12:50,090 INFO L97 edCorrectnessWitness]: Location invariant before [L715-L715] (! multithreaded || (4 <= j && j % 2 == 0)) && (! multithreaded || (3 <= i && i % 2 == 1)) [2024-06-20 15:12:50,090 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 15:12:50,090 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] multithreaded = 1; [2024-06-20 15:12:50,126 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 15:12:50,408 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:12:50,414 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 15:12:50,493 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:12:50,523 INFO L206 MainTranslator]: Completed translation [2024-06-20 15:12:50,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50 WrapperNode [2024-06-20 15:12:50,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 15:12:50,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 15:12:50,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 15:12:50,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 15:12:50,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50" (1/1) ... [2024-06-20 15:12:50,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50" (1/1) ... [2024-06-20 15:12:50,566 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2024-06-20 15:12:50,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 15:12:50,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 15:12:50,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 15:12:50,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 15:12:50,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50" (1/1) ... [2024-06-20 15:12:50,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50" (1/1) ... [2024-06-20 15:12:50,585 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50" (1/1) ... [2024-06-20 15:12:50,595 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-20 15:12:50,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50" (1/1) ... [2024-06-20 15:12:50,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50" (1/1) ... [2024-06-20 15:12:50,611 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50" (1/1) ... [2024-06-20 15:12:50,613 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50" (1/1) ... [2024-06-20 15:12:50,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50" (1/1) ... [2024-06-20 15:12:50,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50" (1/1) ... [2024-06-20 15:12:50,616 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 15:12:50,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 15:12:50,617 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 15:12:50,617 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 15:12:50,618 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50" (1/1) ... [2024-06-20 15:12:50,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:12:50,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 15:12:50,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-20 15:12:50,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-20 15:12:50,696 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-20 15:12:50,696 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-20 15:12:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-20 15:12:50,697 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-20 15:12:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 15:12:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 15:12:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 15:12:50,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 15:12:50,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 15:12:50,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 15:12:50,700 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 15:12:50,808 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 15:12:50,810 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 15:12:50,996 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 15:12:50,996 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 15:12:51,061 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 15:12:51,061 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-20 15:12:51,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:12:51 BoogieIcfgContainer [2024-06-20 15:12:51,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 15:12:51,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 15:12:51,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 15:12:51,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 15:12:51,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:12:48" (1/4) ... [2024-06-20 15:12:51,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592dff56 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:12:51, skipping insertion in model container [2024-06-20 15:12:51,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 03:12:50" (2/4) ... [2024-06-20 15:12:51,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592dff56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 03:12:51, skipping insertion in model container [2024-06-20 15:12:51,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:12:50" (3/4) ... [2024-06-20 15:12:51,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592dff56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 03:12:51, skipping insertion in model container [2024-06-20 15:12:51,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:12:51" (4/4) ... [2024-06-20 15:12:51,117 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2024-06-20 15:12:51,130 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 15:12:51,161 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 15:12:51,161 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 15:12:51,198 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 15:12:51,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 58 flow [2024-06-20 15:12:51,251 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-06-20 15:12:51,252 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:12:51,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 23 events. 2/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-06-20 15:12:51,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 58 flow [2024-06-20 15:12:51,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 52 flow [2024-06-20 15:12:51,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 15:12:51,277 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;@9275689, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 15:12:51,277 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 15:12:51,282 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 15:12:51,282 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 15:12:51,283 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:12:51,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:12:51,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 15:12:51,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:12:51,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:12:51,291 INFO L85 PathProgramCache]: Analyzing trace with hash 184288307, now seen corresponding path program 1 times [2024-06-20 15:12:51,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:12:51,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965504277] [2024-06-20 15:12:51,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:12:51,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:12:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:12:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:12:51,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:12:51,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965504277] [2024-06-20 15:12:51,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965504277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:12:51,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:12:51,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 15:12:51,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777269081] [2024-06-20 15:12:51,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:12:51,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 15:12:51,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:12:51,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 15:12:51,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 15:12:51,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 25 [2024-06-20 15:12:51,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:12:51,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:12:51,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 25 [2024-06-20 15:12:51,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:12:52,002 INFO L124 PetriNetUnfolderBase]: 172/314 cut-off events. [2024-06-20 15:12:52,004 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-20 15:12:52,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 314 events. 172/314 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1212 event pairs, 54 based on Foata normal form. 9/310 useless extension candidates. Maximal degree in co-relation 602. Up to 211 conditions per place. [2024-06-20 15:12:52,007 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 23 selfloop transitions, 3 changer transitions 2/34 dead transitions. [2024-06-20 15:12:52,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 133 flow [2024-06-20 15:12:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 15:12:52,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 15:12:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-20 15:12:52,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.72 [2024-06-20 15:12:52,023 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-20 15:12:52,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 133 flow [2024-06-20 15:12:52,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 15:12:52,028 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 69 flow [2024-06-20 15:12:52,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2024-06-20 15:12:52,033 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-20 15:12:52,033 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 69 flow [2024-06-20 15:12:52,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:12:52,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:12:52,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:12:52,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 15:12:52,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:12:52,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:12:52,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1177819896, now seen corresponding path program 1 times [2024-06-20 15:12:52,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:12:52,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614596165] [2024-06-20 15:12:52,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:12:52,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:12:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:12:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:12:52,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:12:52,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614596165] [2024-06-20 15:12:52,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614596165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:12:52,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:12:52,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 15:12:52,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877813331] [2024-06-20 15:12:52,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:12:52,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:12:52,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:12:52,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:12:52,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:12:52,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 25 [2024-06-20 15:12:52,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:12:52,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:12:52,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 25 [2024-06-20 15:12:52,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:12:52,419 INFO L124 PetriNetUnfolderBase]: 160/307 cut-off events. [2024-06-20 15:12:52,419 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-06-20 15:12:52,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 307 events. 160/307 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1164 event pairs, 37 based on Foata normal form. 21/327 useless extension candidates. Maximal degree in co-relation 673. Up to 109 conditions per place. [2024-06-20 15:12:52,421 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 29 selfloop transitions, 5 changer transitions 4/44 dead transitions. [2024-06-20 15:12:52,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 193 flow [2024-06-20 15:12:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:12:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:12:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-06-20 15:12:52,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.648 [2024-06-20 15:12:52,423 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 69 flow. Second operand 5 states and 81 transitions. [2024-06-20 15:12:52,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 193 flow [2024-06-20 15:12:52,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 44 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 15:12:52,425 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 92 flow [2024-06-20 15:12:52,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-06-20 15:12:52,426 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-20 15:12:52,426 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 92 flow [2024-06-20 15:12:52,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:12:52,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:12:52,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:12:52,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 15:12:52,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:12:52,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:12:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2028359468, now seen corresponding path program 1 times [2024-06-20 15:12:52,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:12:52,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485652181] [2024-06-20 15:12:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:12:52,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:12:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:12:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:12:52,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:12:52,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485652181] [2024-06-20 15:12:52,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485652181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:12:52,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:12:52,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:12:52,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823535360] [2024-06-20 15:12:52,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:12:52,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 15:12:52,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:12:52,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 15:12:52,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-20 15:12:52,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 25 [2024-06-20 15:12:52,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:12:52,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:12:52,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 25 [2024-06-20 15:12:52,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:12:52,648 INFO L124 PetriNetUnfolderBase]: 244/463 cut-off events. [2024-06-20 15:12:52,648 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2024-06-20 15:12:52,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 463 events. 244/463 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1982 event pairs, 88 based on Foata normal form. 18/477 useless extension candidates. Maximal degree in co-relation 1078. Up to 255 conditions per place. [2024-06-20 15:12:52,650 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2024-06-20 15:12:52,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 178 flow [2024-06-20 15:12:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:12:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:12:52,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-06-20 15:12:52,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.472 [2024-06-20 15:12:52,652 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 92 flow. Second operand 5 states and 59 transitions. [2024-06-20 15:12:52,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 178 flow [2024-06-20 15:12:52,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 15:12:52,654 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2024-06-20 15:12:52,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2024-06-20 15:12:52,655 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-06-20 15:12:52,655 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2024-06-20 15:12:52,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:12:52,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 15:12:52,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 15:12:52,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 15:12:52,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 15:12:52,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 15:12:52,658 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-06-20 15:12:52,661 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 15:12:52,661 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 15:12:52,664 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 15:12:52,664 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 15:12:52,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 03:12:52 BasicIcfg [2024-06-20 15:12:52,665 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 15:12:52,666 INFO L158 Benchmark]: Toolchain (without parser) took 2608.99ms. Allocated memory was 148.9MB in the beginning and 226.5MB in the end (delta: 77.6MB). Free memory was 89.5MB in the beginning and 66.6MB in the end (delta: 22.9MB). Peak memory consumption was 103.6MB. Max. memory is 16.1GB. [2024-06-20 15:12:52,666 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 148.9MB. Free memory is still 113.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:12:52,666 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 148.9MB. Free memory is still 110.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:12:52,667 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.58ms. Allocated memory is still 148.9MB. Free memory was 89.5MB in the beginning and 65.2MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-20 15:12:52,667 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.93ms. Allocated memory is still 148.9MB. Free memory was 65.2MB in the beginning and 63.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 15:12:52,667 INFO L158 Benchmark]: Boogie Preprocessor took 49.42ms. Allocated memory is still 148.9MB. Free memory was 63.0MB in the beginning and 61.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 15:12:52,668 INFO L158 Benchmark]: RCFGBuilder took 446.18ms. Allocated memory is still 148.9MB. Free memory was 61.0MB in the beginning and 40.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-20 15:12:52,668 INFO L158 Benchmark]: TraceAbstraction took 1600.16ms. Allocated memory was 148.9MB in the beginning and 226.5MB in the end (delta: 77.6MB). Free memory was 39.2MB in the beginning and 66.6MB in the end (delta: -27.4MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. [2024-06-20 15:12:52,669 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 148.9MB. Free memory is still 113.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 148.9MB. Free memory is still 110.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 464.58ms. Allocated memory is still 148.9MB. Free memory was 89.5MB in the beginning and 65.2MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.93ms. Allocated memory is still 148.9MB. Free memory was 65.2MB in the beginning and 63.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.42ms. Allocated memory is still 148.9MB. Free memory was 63.0MB in the beginning and 61.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.18ms. Allocated memory is still 148.9MB. Free memory was 61.0MB in the beginning and 40.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1600.16ms. Allocated memory was 148.9MB in the beginning and 226.5MB in the end (delta: 77.6MB). Free memory was 39.2MB in the beginning and 66.6MB in the end (delta: -27.4MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 714]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 715]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 36 locations, 4 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: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 113 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 146 IncrementalHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 10 mSDtfsCounter, 146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=2, InterpolantAutomatonStates: 13, 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, 0.8s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 175 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-20 15:12:52,691 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 Result: TRUE