./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.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/mutex-meet-nonrel/popl20-more-buffer-mult.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-mult.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/popl20-more-buffer-mult.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 22:16:13,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 22:16:13,714 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 22:16:13,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 22:16:13,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 22:16:13,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 22:16:13,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 22:16:13,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 22:16:13,748 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 22:16:13,751 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 22:16:13,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 22:16:13,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 22:16:13,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 22:16:13,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 22:16:13,754 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 22:16:13,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 22:16:13,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 22:16:13,754 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 22:16:13,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 22:16:13,755 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 22:16:13,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 22:16:13,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 22:16:13,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 22:16:13,756 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 22:16:13,756 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 22:16:13,756 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 22:16:13,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 22:16:13,756 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 22:16:13,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 22:16:13,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 22:16:13,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 22:16:13,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 22:16:13,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 22:16:13,758 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 22:16:13,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 22:16:13,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 22:16:13,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 22:16:13,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 22:16:13,759 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 22:16:13,759 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 22:16:13,759 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 22:16:13,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 22:16:13,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 22:16:13,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 22:16:13,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 22:16:14,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 22:16:14,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 22:16:14,004 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 22:16:14,006 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 22:16:14,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/popl20-more-buffer-mult.wvr.yml/witness.yml [2024-06-21 22:16:14,118 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 22:16:14,118 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 22:16:14,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2024-06-21 22:16:15,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 22:16:15,164 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 22:16:15,164 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2024-06-21 22:16:15,171 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f975aec37/eac87931bab64bdc9c46edef4c3dc8fc/FLAG99bc53e00 [2024-06-21 22:16:15,184 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f975aec37/eac87931bab64bdc9c46edef4c3dc8fc [2024-06-21 22:16:15,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 22:16:15,185 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 22:16:15,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 22:16:15,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 22:16:15,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 22:16:15,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 10:16:14" (1/2) ... [2024-06-21 22:16:15,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18051861 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:16:15, skipping insertion in model container [2024-06-21 22:16:15,193 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 10:16:14" (1/2) ... [2024-06-21 22:16:15,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b8e3434 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:16:15, skipping insertion in model container [2024-06-21 22:16:15,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 10:16:15" (2/2) ... [2024-06-21 22:16:15,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18051861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15, skipping insertion in model container [2024-06-21 22:16:15,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 10:16:15" (2/2) ... [2024-06-21 22:16:15,197 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 22:16:15,219 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 22:16:15,220 INFO L97 edCorrectnessWitness]: Location invariant before [L146-L146] ((! multithreaded || 0 <= j) && (! multithreaded || (0 <= i && 0 <= j))) && (! multithreaded || 0 <= i) [2024-06-21 22:16:15,221 INFO L97 edCorrectnessWitness]: Location invariant before [L145-L145] ((! multithreaded || 0 <= j) && (! multithreaded || (0 <= i && 0 <= j))) && (! multithreaded || 0 <= i) [2024-06-21 22:16:15,221 INFO L97 edCorrectnessWitness]: Location invariant before [L144-L144] ((! multithreaded || 0 <= j) && (! multithreaded || (0 <= i && 0 <= j))) && (! multithreaded || 0 <= i) [2024-06-21 22:16:15,221 INFO L97 edCorrectnessWitness]: Location invariant before [L143-L143] ((! multithreaded || 0 <= j) && (! multithreaded || (0 <= i && 0 <= j))) && (! multithreaded || 0 <= i) [2024-06-21 22:16:15,221 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 22:16:15,221 INFO L106 edCorrectnessWitness]: ghost_update [L142-L142] multithreaded = 1; [2024-06-21 22:16:15,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 22:16:15,419 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 22:16:15,425 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 22:16:15,479 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 22:16:15,495 INFO L206 MainTranslator]: Completed translation [2024-06-21 22:16:15,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15 WrapperNode [2024-06-21 22:16:15,497 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 22:16:15,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 22:16:15,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 22:16:15,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 22:16:15,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15" (1/1) ... [2024-06-21 22:16:15,521 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15" (1/1) ... [2024-06-21 22:16:15,555 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 305 [2024-06-21 22:16:15,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 22:16:15,559 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 22:16:15,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 22:16:15,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 22:16:15,569 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15" (1/1) ... [2024-06-21 22:16:15,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15" (1/1) ... [2024-06-21 22:16:15,583 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15" (1/1) ... [2024-06-21 22:16:15,608 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-06-21 22:16:15,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15" (1/1) ... [2024-06-21 22:16:15,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15" (1/1) ... [2024-06-21 22:16:15,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15" (1/1) ... [2024-06-21 22:16:15,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15" (1/1) ... [2024-06-21 22:16:15,641 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15" (1/1) ... [2024-06-21 22:16:15,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15" (1/1) ... [2024-06-21 22:16:15,648 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 22:16:15,650 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 22:16:15,651 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 22:16:15,651 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 22:16:15,651 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15" (1/1) ... [2024-06-21 22:16:15,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 22:16:15,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 22:16:15,675 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 22:16:15,680 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 22:16:15,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 22:16:15,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-21 22:16:15,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-21 22:16:15,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-21 22:16:15,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-21 22:16:15,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-21 22:16:15,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-21 22:16:15,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-21 22:16:15,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-21 22:16:15,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-21 22:16:15,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-21 22:16:15,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-21 22:16:15,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-21 22:16:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 22:16:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 22:16:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 22:16:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 22:16:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-21 22:16:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 22:16:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 22:16:15,703 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 22:16:15,788 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 22:16:15,789 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 22:16:16,101 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 22:16:16,102 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 22:16:16,360 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 22:16:16,360 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-21 22:16:16,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:16:16 BoogieIcfgContainer [2024-06-21 22:16:16,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 22:16:16,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 22:16:16,362 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 22:16:16,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 22:16:16,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 10:16:14" (1/4) ... [2024-06-21 22:16:16,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289c8786 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 10:16:16, skipping insertion in model container [2024-06-21 22:16:16,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 10:16:15" (2/4) ... [2024-06-21 22:16:16,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289c8786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 10:16:16, skipping insertion in model container [2024-06-21 22:16:16,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:16:15" (3/4) ... [2024-06-21 22:16:16,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289c8786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 10:16:16, skipping insertion in model container [2024-06-21 22:16:16,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:16:16" (4/4) ... [2024-06-21 22:16:16,368 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2024-06-21 22:16:16,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 22:16:16,382 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 22:16:16,382 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 22:16:16,427 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-21 22:16:16,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 57 transitions, 142 flow [2024-06-21 22:16:16,486 INFO L124 PetriNetUnfolderBase]: 6/53 cut-off events. [2024-06-21 22:16:16,487 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-21 22:16:16,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 53 events. 6/53 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-21 22:16:16,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 57 transitions, 142 flow [2024-06-21 22:16:16,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 51 transitions, 123 flow [2024-06-21 22:16:16,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 22:16:16,511 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;@1d6f07c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 22:16:16,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 22:16:16,516 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 22:16:16,516 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-06-21 22:16:16,516 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 22:16:16,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:16:16,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:16:16,517 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 22:16:16,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:16:16,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1695047079, now seen corresponding path program 1 times [2024-06-21 22:16:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:16:16,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551688604] [2024-06-21 22:16:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:16:16,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:16:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:16:16,912 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 22:16:16,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:16:16,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551688604] [2024-06-21 22:16:16,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551688604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:16:16,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:16:16,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 22:16:16,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116790196] [2024-06-21 22:16:16,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:16:16,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 22:16:16,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:16:16,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 22:16:16,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 22:16:16,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-06-21 22:16:16,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 22:16:16,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:16:16,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-06-21 22:16:16,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:16:17,569 INFO L124 PetriNetUnfolderBase]: 2862/4376 cut-off events. [2024-06-21 22:16:17,569 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2024-06-21 22:16:17,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8444 conditions, 4376 events. 2862/4376 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 27758 event pairs, 944 based on Foata normal form. 108/4182 useless extension candidates. Maximal degree in co-relation 7863. Up to 2343 conditions per place. [2024-06-21 22:16:17,600 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 48 selfloop transitions, 2 changer transitions 2/70 dead transitions. [2024-06-21 22:16:17,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 70 transitions, 280 flow [2024-06-21 22:16:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 22:16:17,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 22:16:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-06-21 22:16:17,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7134502923976608 [2024-06-21 22:16:17,610 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 123 flow. Second operand 3 states and 122 transitions. [2024-06-21 22:16:17,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 70 transitions, 280 flow [2024-06-21 22:16:17,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 258 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-21 22:16:17,622 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 124 flow [2024-06-21 22:16:17,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-06-21 22:16:17,626 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2024-06-21 22:16:17,627 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 124 flow [2024-06-21 22:16:17,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 22:16:17,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:16:17,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:16:17,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 22:16:17,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 22:16:17,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:16:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash 812336914, now seen corresponding path program 1 times [2024-06-21 22:16:17,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:16:17,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373611686] [2024-06-21 22:16:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:16:17,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:16:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:16:17,788 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 22:16:17,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:16:17,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373611686] [2024-06-21 22:16:17,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373611686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:16:17,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:16:17,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 22:16:17,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003757299] [2024-06-21 22:16:17,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:16:17,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 22:16:17,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:16:17,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 22:16:17,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 22:16:17,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-06-21 22:16:17,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 22:16:17,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:16:17,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-06-21 22:16:17,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:16:18,183 INFO L124 PetriNetUnfolderBase]: 2930/4835 cut-off events. [2024-06-21 22:16:18,184 INFO L125 PetriNetUnfolderBase]: For 321/321 co-relation queries the response was YES. [2024-06-21 22:16:18,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 4835 events. 2930/4835 cut-off events. For 321/321 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 33574 event pairs, 2189 based on Foata normal form. 118/4626 useless extension candidates. Maximal degree in co-relation 4972. Up to 3160 conditions per place. [2024-06-21 22:16:18,207 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 29 selfloop transitions, 2 changer transitions 22/74 dead transitions. [2024-06-21 22:16:18,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 74 transitions, 284 flow [2024-06-21 22:16:18,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 22:16:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 22:16:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-06-21 22:16:18,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2024-06-21 22:16:18,214 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 124 flow. Second operand 4 states and 158 transitions. [2024-06-21 22:16:18,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 74 transitions, 284 flow [2024-06-21 22:16:18,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 22:16:18,218 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 138 flow [2024-06-21 22:16:18,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-21 22:16:18,219 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -1 predicate places. [2024-06-21 22:16:18,222 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 138 flow [2024-06-21 22:16:18,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 22:16:18,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:16:18,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:16:18,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 22:16:18,223 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 22:16:18,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:16:18,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1418886018, now seen corresponding path program 1 times [2024-06-21 22:16:18,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:16:18,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982139733] [2024-06-21 22:16:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:16:18,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:16:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:16:18,352 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 22:16:18,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:16:18,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982139733] [2024-06-21 22:16:18,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982139733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:16:18,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:16:18,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 22:16:18,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023151456] [2024-06-21 22:16:18,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:16:18,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 22:16:18,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:16:18,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 22:16:18,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 22:16:18,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-06-21 22:16:18,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 138 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 22:16:18,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:16:18,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-06-21 22:16:18,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:16:18,693 INFO L124 PetriNetUnfolderBase]: 2343/3702 cut-off events. [2024-06-21 22:16:18,694 INFO L125 PetriNetUnfolderBase]: For 674/674 co-relation queries the response was YES. [2024-06-21 22:16:18,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7681 conditions, 3702 events. 2343/3702 cut-off events. For 674/674 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 23735 event pairs, 840 based on Foata normal form. 156/3677 useless extension candidates. Maximal degree in co-relation 7663. Up to 1667 conditions per place. [2024-06-21 22:16:18,704 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2024-06-21 22:16:18,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 68 transitions, 274 flow [2024-06-21 22:16:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 22:16:18,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 22:16:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-06-21 22:16:18,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2024-06-21 22:16:18,706 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 138 flow. Second operand 4 states and 140 transitions. [2024-06-21 22:16:18,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 68 transitions, 274 flow [2024-06-21 22:16:18,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 270 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-21 22:16:18,709 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2024-06-21 22:16:18,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2024-06-21 22:16:18,710 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-06-21 22:16:18,711 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2024-06-21 22:16:18,711 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 22:16:18,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-21 22:16:18,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-21 22:16:18,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-21 22:16:18,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-21 22:16:18,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-06-21 22:16:18,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-21 22:16:18,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-21 22:16:18,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-21 22:16:18,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 22:16:18,719 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-06-21 22:16:18,721 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 22:16:18,721 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 22:16:18,725 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-21 22:16:18,725 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-21 22:16:18,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 10:16:18 BasicIcfg [2024-06-21 22:16:18,726 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 22:16:18,728 INFO L158 Benchmark]: Toolchain (without parser) took 3542.01ms. Allocated memory was 172.0MB in the beginning and 243.3MB in the end (delta: 71.3MB). Free memory was 101.0MB in the beginning and 147.4MB in the end (delta: -46.3MB). Peak memory consumption was 127.2MB. Max. memory is 16.1GB. [2024-06-21 22:16:18,729 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 104.9MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 22:16:18,730 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 172.0MB. Free memory was 146.5MB in the beginning and 146.4MB in the end (delta: 130.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 22:16:18,732 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.04ms. Allocated memory is still 172.0MB. Free memory was 100.8MB in the beginning and 139.2MB in the end (delta: -38.5MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2024-06-21 22:16:18,732 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.89ms. Allocated memory is still 172.0MB. Free memory was 139.2MB in the beginning and 136.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 22:16:18,732 INFO L158 Benchmark]: Boogie Preprocessor took 90.63ms. Allocated memory is still 172.0MB. Free memory was 136.2MB in the beginning and 132.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 22:16:18,732 INFO L158 Benchmark]: RCFGBuilder took 710.19ms. Allocated memory is still 172.0MB. Free memory was 132.9MB in the beginning and 109.6MB in the end (delta: 23.3MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. [2024-06-21 22:16:18,733 INFO L158 Benchmark]: TraceAbstraction took 2364.28ms. Allocated memory was 172.0MB in the beginning and 243.3MB in the end (delta: 71.3MB). Free memory was 109.3MB in the beginning and 147.4MB in the end (delta: -38.1MB). Peak memory consumption was 133.5MB. Max. memory is 16.1GB. [2024-06-21 22:16:18,737 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 0.15ms. Allocated memory is still 104.9MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 172.0MB. Free memory was 146.5MB in the beginning and 146.4MB in the end (delta: 130.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.04ms. Allocated memory is still 172.0MB. Free memory was 100.8MB in the beginning and 139.2MB in the end (delta: -38.5MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.89ms. Allocated memory is still 172.0MB. Free memory was 139.2MB in the beginning and 136.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.63ms. Allocated memory is still 172.0MB. Free memory was 136.2MB in the beginning and 132.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 710.19ms. Allocated memory is still 172.0MB. Free memory was 132.9MB in the beginning and 109.6MB in the end (delta: 23.3MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2364.28ms. Allocated memory was 172.0MB in the beginning and 243.3MB in the end (delta: 71.3MB). Free memory was 109.3MB in the beginning and 147.4MB in the end (delta: -38.1MB). Peak memory consumption was 133.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 143]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 144]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 145]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 146]: 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, 82 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: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 316 IncrementalHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 16 mSDtfsCounter, 316 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 185 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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 22:16:18,773 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