./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/popl20-more-buffer-series.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c ./goblint.2024-06-19_11-23-25.files/protection/popl20-more-buffer-series.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 18:03:31,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 18:03:32,032 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 18:03:32,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 18:03:32,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 18:03:32,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 18:03:32,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 18:03:32,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 18:03:32,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 18:03:32,053 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 18:03:32,053 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 18:03:32,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 18:03:32,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 18:03:32,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 18:03:32,054 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 18:03:32,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 18:03:32,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 18:03:32,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 18:03:32,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 18:03:32,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 18:03:32,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 18:03:32,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 18:03:32,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 18:03:32,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 18:03:32,058 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 18:03:32,058 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 18:03:32,058 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 18:03:32,059 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 18:03:32,059 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 18:03:32,059 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 18:03:32,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 18:03:32,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 18:03:32,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:03:32,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 18:03:32,061 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 18:03:32,061 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 18:03:32,061 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 18:03:32,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 18:03:32,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 18:03:32,062 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 18:03:32,062 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 18:03:32,062 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 18:03:32,063 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 18:03:32,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 18:03:32,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 18:03:32,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 18:03:32,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 18:03:32,260 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 18:03:32,260 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 18:03:32,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-06-21 18:03:33,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 18:03:33,650 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 18:03:33,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2024-06-21 18:03:33,666 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b00f2581b/1b3ab32458114e31b3daee561eba18d8/FLAG36f8452c1 [2024-06-21 18:03:33,685 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b00f2581b/1b3ab32458114e31b3daee561eba18d8 [2024-06-21 18:03:33,688 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 18:03:33,689 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 18:03:33,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/popl20-more-buffer-series.wvr.yml/witness.yml [2024-06-21 18:03:33,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 18:03:33,790 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 18:03:33,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 18:03:33,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 18:03:33,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 18:03:33,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:03:33" (1/2) ... [2024-06-21 18:03:33,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7950dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:03:33, skipping insertion in model container [2024-06-21 18:03:33,802 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:03:33" (1/2) ... [2024-06-21 18:03:33,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6eb6fa1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:03:33, skipping insertion in model container [2024-06-21 18:03:33,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:03:33" (2/2) ... [2024-06-21 18:03:33,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7950dc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:33, skipping insertion in model container [2024-06-21 18:03:33,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:03:33" (2/2) ... [2024-06-21 18:03:33,805 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 18:03:33,828 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 18:03:33,829 INFO L97 edCorrectnessWitness]: Location invariant before [L146-L146] (! multithreaded || 0 <= j) && (! multithreaded || 0 <= i) [2024-06-21 18:03:33,829 INFO L97 edCorrectnessWitness]: Location invariant before [L149-L149] (! multithreaded || 0 <= j) && (! multithreaded || 0 <= i) [2024-06-21 18:03:33,829 INFO L97 edCorrectnessWitness]: Location invariant before [L147-L147] (! multithreaded || 0 <= j) && (! multithreaded || 0 <= i) [2024-06-21 18:03:33,829 INFO L97 edCorrectnessWitness]: Location invariant before [L148-L148] (! multithreaded || 0 <= j) && (! multithreaded || 0 <= i) [2024-06-21 18:03:33,830 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 18:03:33,830 INFO L106 edCorrectnessWitness]: ghost_update [L145-L145] multithreaded = 1; [2024-06-21 18:03:33,856 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 18:03:34,081 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:03:34,101 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 18:03:34,209 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:03:34,224 INFO L206 MainTranslator]: Completed translation [2024-06-21 18:03:34,225 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34 WrapperNode [2024-06-21 18:03:34,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 18:03:34,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 18:03:34,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 18:03:34,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 18:03:34,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34" (1/1) ... [2024-06-21 18:03:34,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34" (1/1) ... [2024-06-21 18:03:34,274 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 349 [2024-06-21 18:03:34,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 18:03:34,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 18:03:34,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 18:03:34,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 18:03:34,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34" (1/1) ... [2024-06-21 18:03:34,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34" (1/1) ... [2024-06-21 18:03:34,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34" (1/1) ... [2024-06-21 18:03:34,306 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-06-21 18:03:34,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34" (1/1) ... [2024-06-21 18:03:34,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34" (1/1) ... [2024-06-21 18:03:34,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34" (1/1) ... [2024-06-21 18:03:34,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34" (1/1) ... [2024-06-21 18:03:34,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34" (1/1) ... [2024-06-21 18:03:34,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34" (1/1) ... [2024-06-21 18:03:34,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 18:03:34,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 18:03:34,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 18:03:34,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 18:03:34,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34" (1/1) ... [2024-06-21 18:03:34,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:03:34,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:03:34,439 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) [2024-06-21 18:03:34,516 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 [2024-06-21 18:03:34,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 18:03:34,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-21 18:03:34,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-21 18:03:34,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-21 18:03:34,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-21 18:03:34,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-21 18:03:34,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-21 18:03:34,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-21 18:03:34,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-21 18:03:34,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-21 18:03:34,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-21 18:03:34,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-21 18:03:34,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-21 18:03:34,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 18:03:34,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 18:03:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 18:03:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 18:03:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-21 18:03:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 18:03:34,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 18:03:34,584 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 18:03:34,723 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 18:03:34,725 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 18:03:35,147 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 18:03:35,147 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 18:03:35,536 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 18:03:35,536 INFO L320 CfgBuilder]: Removed 7 assume(true) statements. [2024-06-21 18:03:35,537 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:03:35 BoogieIcfgContainer [2024-06-21 18:03:35,537 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 18:03:35,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 18:03:35,540 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 18:03:35,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 18:03:35,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 06:03:33" (1/4) ... [2024-06-21 18:03:35,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b28d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:03:35, skipping insertion in model container [2024-06-21 18:03:35,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:03:33" (2/4) ... [2024-06-21 18:03:35,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b28d40 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:03:35, skipping insertion in model container [2024-06-21 18:03:35,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:03:34" (3/4) ... [2024-06-21 18:03:35,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b28d40 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:03:35, skipping insertion in model container [2024-06-21 18:03:35,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:03:35" (4/4) ... [2024-06-21 18:03:35,547 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2024-06-21 18:03:35,566 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 18:03:35,567 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 18:03:35,567 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 18:03:35,631 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-21 18:03:35,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 59 transitions, 146 flow [2024-06-21 18:03:35,707 INFO L124 PetriNetUnfolderBase]: 7/55 cut-off events. [2024-06-21 18:03:35,707 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-21 18:03:35,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 55 events. 7/55 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-21 18:03:35,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 59 transitions, 146 flow [2024-06-21 18:03:35,716 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 53 transitions, 127 flow [2024-06-21 18:03:35,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 18:03:35,740 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;@5e3b0a21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 18:03:35,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 18:03:35,749 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 18:03:35,749 INFO L124 PetriNetUnfolderBase]: 3/12 cut-off events. [2024-06-21 18:03:35,749 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:03:35,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:03:35,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:03:35,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:03:35,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:03:35,756 INFO L85 PathProgramCache]: Analyzing trace with hash 190220711, now seen corresponding path program 1 times [2024-06-21 18:03:35,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:03:35,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183274412] [2024-06-21 18:03:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:03:35,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:03:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:03:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:03:36,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:03:36,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183274412] [2024-06-21 18:03:36,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183274412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:03:36,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:03:36,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 18:03:36,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486383271] [2024-06-21 18:03:36,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:03:36,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 18:03:36,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:03:36,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 18:03:36,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 18:03:36,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-06-21 18:03:36,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-06-21 18:03:36,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:03:36,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-06-21 18:03:36,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:03:36,995 INFO L124 PetriNetUnfolderBase]: 3047/4722 cut-off events. [2024-06-21 18:03:36,995 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-06-21 18:03:37,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9059 conditions, 4722 events. 3047/4722 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 31038 event pairs, 743 based on Foata normal form. 81/4373 useless extension candidates. Maximal degree in co-relation 8387. Up to 3090 conditions per place. [2024-06-21 18:03:37,037 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 53 selfloop transitions, 3 changer transitions 2/76 dead transitions. [2024-06-21 18:03:37,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 76 transitions, 307 flow [2024-06-21 18:03:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 18:03:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 18:03:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-06-21 18:03:37,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7231638418079096 [2024-06-21 18:03:37,050 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 127 flow. Second operand 3 states and 128 transitions. [2024-06-21 18:03:37,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 76 transitions, 307 flow [2024-06-21 18:03:37,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 283 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-21 18:03:37,061 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 139 flow [2024-06-21 18:03:37,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2024-06-21 18:03:37,066 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2024-06-21 18:03:37,066 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 139 flow [2024-06-21 18:03:37,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-06-21 18:03:37,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:03:37,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:03:37,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 18:03:37,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:03:37,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:03:37,068 INFO L85 PathProgramCache]: Analyzing trace with hash -713760376, now seen corresponding path program 1 times [2024-06-21 18:03:37,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:03:37,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442314846] [2024-06-21 18:03:37,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:03:37,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:03:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:03:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:03:37,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:03:37,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442314846] [2024-06-21 18:03:37,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442314846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:03:37,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:03:37,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:03:37,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986145158] [2024-06-21 18:03:37,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:03:37,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:03:37,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:03:37,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:03:37,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:03:37,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-06-21 18:03:37,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-06-21 18:03:37,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:03:37,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-06-21 18:03:37,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:03:37,892 INFO L124 PetriNetUnfolderBase]: 3328/5169 cut-off events. [2024-06-21 18:03:37,893 INFO L125 PetriNetUnfolderBase]: For 555/555 co-relation queries the response was YES. [2024-06-21 18:03:37,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10920 conditions, 5169 events. 3328/5169 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 35155 event pairs, 728 based on Foata normal form. 120/5006 useless extension candidates. Maximal degree in co-relation 2201. Up to 2412 conditions per place. [2024-06-21 18:03:37,931 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 69 selfloop transitions, 4 changer transitions 4/95 dead transitions. [2024-06-21 18:03:37,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 95 transitions, 388 flow [2024-06-21 18:03:37,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:03:37,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:03:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-06-21 18:03:37,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7161016949152542 [2024-06-21 18:03:37,939 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 139 flow. Second operand 4 states and 169 transitions. [2024-06-21 18:03:37,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 95 transitions, 388 flow [2024-06-21 18:03:37,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 95 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 18:03:37,944 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 154 flow [2024-06-21 18:03:37,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-06-21 18:03:37,945 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2024-06-21 18:03:37,945 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 154 flow [2024-06-21 18:03:37,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-06-21 18:03:37,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:03:37,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:03:37,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 18:03:37,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:03:37,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:03:37,947 INFO L85 PathProgramCache]: Analyzing trace with hash -524619685, now seen corresponding path program 1 times [2024-06-21 18:03:37,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:03:37,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432818096] [2024-06-21 18:03:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:03:37,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:03:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:03:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:03:38,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:03:38,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432818096] [2024-06-21 18:03:38,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432818096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:03:38,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:03:38,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:03:38,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534673549] [2024-06-21 18:03:38,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:03:38,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:03:38,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:03:38,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:03:38,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:03:38,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-06-21 18:03:38,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-06-21 18:03:38,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:03:38,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-06-21 18:03:38,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:03:38,925 INFO L124 PetriNetUnfolderBase]: 3642/5783 cut-off events. [2024-06-21 18:03:38,925 INFO L125 PetriNetUnfolderBase]: For 1977/1977 co-relation queries the response was YES. [2024-06-21 18:03:38,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12731 conditions, 5783 events. 3642/5783 cut-off events. For 1977/1977 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 41177 event pairs, 987 based on Foata normal form. 117/5612 useless extension candidates. Maximal degree in co-relation 4984. Up to 2909 conditions per place. [2024-06-21 18:03:38,965 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 68 selfloop transitions, 4 changer transitions 6/96 dead transitions. [2024-06-21 18:03:38,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 96 transitions, 411 flow [2024-06-21 18:03:38,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:03:38,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:03:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-06-21 18:03:38,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2024-06-21 18:03:38,977 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 154 flow. Second operand 4 states and 168 transitions. [2024-06-21 18:03:38,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 96 transitions, 411 flow [2024-06-21 18:03:38,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 96 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 18:03:38,979 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 170 flow [2024-06-21 18:03:38,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-06-21 18:03:38,980 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2024-06-21 18:03:38,980 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 170 flow [2024-06-21 18:03:38,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-06-21 18:03:38,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:03:38,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:03:38,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 18:03:38,980 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:03:38,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:03:38,981 INFO L85 PathProgramCache]: Analyzing trace with hash -725284932, now seen corresponding path program 1 times [2024-06-21 18:03:38,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:03:38,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541181462] [2024-06-21 18:03:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:03:38,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:03:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:03:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:03:39,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:03:39,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541181462] [2024-06-21 18:03:39,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541181462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:03:39,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:03:39,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:03:39,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294223443] [2024-06-21 18:03:39,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:03:39,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:03:39,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:03:39,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:03:39,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:03:39,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-06-21 18:03:39,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-06-21 18:03:39,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:03:39,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-06-21 18:03:39,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:03:39,870 INFO L124 PetriNetUnfolderBase]: 4184/6960 cut-off events. [2024-06-21 18:03:39,870 INFO L125 PetriNetUnfolderBase]: For 3307/3437 co-relation queries the response was YES. [2024-06-21 18:03:39,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15307 conditions, 6960 events. 4184/6960 cut-off events. For 3307/3437 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 52344 event pairs, 3418 based on Foata normal form. 233/6707 useless extension candidates. Maximal degree in co-relation 8767. Up to 4784 conditions per place. [2024-06-21 18:03:40,020 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 34 selfloop transitions, 2 changer transitions 31/88 dead transitions. [2024-06-21 18:03:40,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 385 flow [2024-06-21 18:03:40,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:03:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:03:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-06-21 18:03:40,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6576271186440678 [2024-06-21 18:03:40,023 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 170 flow. Second operand 5 states and 194 transitions. [2024-06-21 18:03:40,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 385 flow [2024-06-21 18:03:40,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 18:03:40,031 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 188 flow [2024-06-21 18:03:40,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-06-21 18:03:40,033 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2024-06-21 18:03:40,033 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 188 flow [2024-06-21 18:03:40,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-06-21 18:03:40,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:03:40,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:03:40,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 18:03:40,034 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:03:40,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:03:40,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2044901053, now seen corresponding path program 1 times [2024-06-21 18:03:40,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:03:40,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116487626] [2024-06-21 18:03:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:03:40,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:03:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:03:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-21 18:03:40,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:03:40,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116487626] [2024-06-21 18:03:40,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116487626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:03:40,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:03:40,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:03:40,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172162272] [2024-06-21 18:03:40,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:03:40,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:03:40,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:03:40,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:03:40,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:03:40,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-06-21 18:03:40,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2024-06-21 18:03:40,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:03:40,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-06-21 18:03:40,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:03:40,938 INFO L124 PetriNetUnfolderBase]: 4235/7079 cut-off events. [2024-06-21 18:03:40,938 INFO L125 PetriNetUnfolderBase]: For 3591/3721 co-relation queries the response was YES. [2024-06-21 18:03:40,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16382 conditions, 7079 events. 4235/7079 cut-off events. For 3591/3721 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 53684 event pairs, 3480 based on Foata normal form. 187/6768 useless extension candidates. Maximal degree in co-relation 16365. Up to 4785 conditions per place. [2024-06-21 18:03:40,979 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 35 selfloop transitions, 2 changer transitions 27/85 dead transitions. [2024-06-21 18:03:40,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 85 transitions, 404 flow [2024-06-21 18:03:40,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:03:40,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:03:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-06-21 18:03:40,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2024-06-21 18:03:40,981 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 188 flow. Second operand 5 states and 190 transitions. [2024-06-21 18:03:40,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 85 transitions, 404 flow [2024-06-21 18:03:40,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 85 transitions, 380 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-21 18:03:40,995 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 196 flow [2024-06-21 18:03:40,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-06-21 18:03:40,996 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2024-06-21 18:03:40,997 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 196 flow [2024-06-21 18:03:40,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2024-06-21 18:03:40,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:03:40,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:03:40,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 18:03:40,998 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:03:40,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:03:40,998 INFO L85 PathProgramCache]: Analyzing trace with hash 395275502, now seen corresponding path program 1 times [2024-06-21 18:03:40,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:03:40,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431512175] [2024-06-21 18:03:40,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:03:40,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:03:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:03:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-21 18:03:41,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:03:41,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431512175] [2024-06-21 18:03:41,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431512175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:03:41,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:03:41,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:03:41,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767397984] [2024-06-21 18:03:41,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:03:41,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:03:41,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:03:41,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:03:41,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:03:41,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-06-21 18:03:41,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2024-06-21 18:03:41,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:03:41,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-06-21 18:03:41,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:03:41,894 INFO L124 PetriNetUnfolderBase]: 4448/7098 cut-off events. [2024-06-21 18:03:41,895 INFO L125 PetriNetUnfolderBase]: For 4665/4665 co-relation queries the response was YES. [2024-06-21 18:03:41,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17841 conditions, 7098 events. 4448/7098 cut-off events. For 4665/4665 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 52077 event pairs, 978 based on Foata normal form. 117/6925 useless extension candidates. Maximal degree in co-relation 17817. Up to 2807 conditions per place. [2024-06-21 18:03:41,932 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 91 selfloop transitions, 4 changer transitions 5/118 dead transitions. [2024-06-21 18:03:41,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 118 transitions, 571 flow [2024-06-21 18:03:41,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:03:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:03:41,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 210 transitions. [2024-06-21 18:03:41,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2024-06-21 18:03:41,934 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 196 flow. Second operand 5 states and 210 transitions. [2024-06-21 18:03:41,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 118 transitions, 571 flow [2024-06-21 18:03:41,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 118 transitions, 563 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 18:03:41,940 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 203 flow [2024-06-21 18:03:41,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-06-21 18:03:41,941 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 9 predicate places. [2024-06-21 18:03:41,941 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 203 flow [2024-06-21 18:03:41,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2024-06-21 18:03:41,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:03:41,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:03:41,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 18:03:41,942 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:03:41,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:03:41,942 INFO L85 PathProgramCache]: Analyzing trace with hash 395282012, now seen corresponding path program 2 times [2024-06-21 18:03:41,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:03:41,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424045322] [2024-06-21 18:03:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:03:41,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:03:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:03:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-21 18:03:42,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:03:42,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424045322] [2024-06-21 18:03:42,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424045322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:03:42,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:03:42,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:03:42,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543322739] [2024-06-21 18:03:42,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:03:42,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:03:42,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:03:42,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:03:42,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:03:42,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-06-21 18:03:42,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2024-06-21 18:03:42,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:03:42,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-06-21 18:03:42,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:03:42,614 INFO L124 PetriNetUnfolderBase]: 4088/6603 cut-off events. [2024-06-21 18:03:42,614 INFO L125 PetriNetUnfolderBase]: For 5511/5511 co-relation queries the response was YES. [2024-06-21 18:03:42,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16509 conditions, 6603 events. 4088/6603 cut-off events. For 5511/5511 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 48583 event pairs, 831 based on Foata normal form. 117/6468 useless extension candidates. Maximal degree in co-relation 16484. Up to 2342 conditions per place. [2024-06-21 18:03:42,640 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 0 selfloop transitions, 0 changer transitions 115/115 dead transitions. [2024-06-21 18:03:42,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 115 transitions, 542 flow [2024-06-21 18:03:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:03:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:03:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-06-21 18:03:42,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7016949152542373 [2024-06-21 18:03:42,642 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 203 flow. Second operand 5 states and 207 transitions. [2024-06-21 18:03:42,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 115 transitions, 542 flow [2024-06-21 18:03:42,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 115 transitions, 534 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 18:03:42,654 INFO L231 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2024-06-21 18:03:42,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=65, PETRI_TRANSITIONS=0} [2024-06-21 18:03:42,655 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2024-06-21 18:03:42,655 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2024-06-21 18:03:42,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2024-06-21 18:03:42,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-21 18:03:42,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-21 18:03:42,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-21 18:03:42,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-21 18:03:42,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-06-21 18:03:42,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-21 18:03:42,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-21 18:03:42,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-21 18:03:42,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 18:03:42,660 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-06-21 18:03:42,663 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 18:03:42,663 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 18:03:42,670 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-21 18:03:42,670 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-21 18:03:42,673 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 06:03:42 BasicIcfg [2024-06-21 18:03:42,673 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 18:03:42,675 INFO L158 Benchmark]: Toolchain (without parser) took 8883.25ms. Allocated memory was 172.0MB in the beginning and 834.7MB in the end (delta: 662.7MB). Free memory was 114.4MB in the beginning and 497.0MB in the end (delta: -382.6MB). Peak memory consumption was 574.3MB. Max. memory is 16.1GB. [2024-06-21 18:03:42,675 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 18:03:42,676 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 172.0MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 18:03:42,676 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.68ms. Allocated memory is still 172.0MB. Free memory was 114.4MB in the beginning and 97.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-21 18:03:42,676 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.19ms. Allocated memory is still 172.0MB. Free memory was 97.7MB in the beginning and 95.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 18:03:42,677 INFO L158 Benchmark]: Boogie Preprocessor took 52.04ms. Allocated memory is still 172.0MB. Free memory was 95.1MB in the beginning and 91.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 18:03:42,677 INFO L158 Benchmark]: RCFGBuilder took 1209.03ms. Allocated memory is still 172.0MB. Free memory was 91.4MB in the beginning and 107.3MB in the end (delta: -16.0MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2024-06-21 18:03:42,679 INFO L158 Benchmark]: TraceAbstraction took 7133.55ms. Allocated memory was 172.0MB in the beginning and 834.7MB in the end (delta: 662.7MB). Free memory was 106.3MB in the beginning and 497.0MB in the end (delta: -390.8MB). Peak memory consumption was 563.5MB. Max. memory is 16.1GB. [2024-06-21 18:03:42,683 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 172.0MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 430.68ms. Allocated memory is still 172.0MB. Free memory was 114.4MB in the beginning and 97.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.19ms. Allocated memory is still 172.0MB. Free memory was 97.7MB in the beginning and 95.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.04ms. Allocated memory is still 172.0MB. Free memory was 95.1MB in the beginning and 91.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1209.03ms. Allocated memory is still 172.0MB. Free memory was 91.4MB in the beginning and 107.3MB in the end (delta: -16.0MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7133.55ms. Allocated memory was 172.0MB in the beginning and 834.7MB in the end (delta: 662.7MB). Free memory was 106.3MB in the beginning and 497.0MB in the end (delta: -390.8MB). Peak memory consumption was 563.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 146]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 147]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 148]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 149]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 83 locations, 8 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: 7.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 468 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 361 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1244 IncrementalHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 23 mSDtfsCounter, 1244 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred in iteration=6, InterpolantAutomatonStates: 31, 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, 0.8s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 643 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 5/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-21 18:03:42,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE