./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-more-dec-subseq.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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-dec-subseq.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-more-dec-subseq.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-bcb38a6-m [2024-06-04 16:28:06,149 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 16:28:06,205 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 16:28:06,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 16:28:06,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 16:28:06,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 16:28:06,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 16:28:06,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 16:28:06,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 16:28:06,241 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 16:28:06,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 16:28:06,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 16:28:06,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 16:28:06,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 16:28:06,243 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 16:28:06,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 16:28:06,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 16:28:06,243 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 16:28:06,244 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 16:28:06,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 16:28:06,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 16:28:06,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 16:28:06,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 16:28:06,246 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 16:28:06,246 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 16:28:06,246 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 16:28:06,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 16:28:06,247 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 16:28:06,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 16:28:06,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 16:28:06,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 16:28:06,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 16:28:06,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:28:06,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 16:28:06,249 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 16:28:06,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 16:28:06,250 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 16:28:06,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 16:28:06,251 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 16:28:06,251 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 16:28:06,251 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 16:28:06,251 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 16:28:06,252 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 16:28:06,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 16:28:06,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 16:28:06,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 16:28:06,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 16:28:06,552 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 16:28:06,553 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 16:28:06,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2024-06-04 16:28:07,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 16:28:08,012 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 16:28:08,016 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2024-06-04 16:28:08,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a1536f8/e39c6503ef7c4b1ba02a747f6672e909/FLAG7473d9d49 [2024-06-04 16:28:08,039 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a1536f8/e39c6503ef7c4b1ba02a747f6672e909 [2024-06-04 16:28:08,041 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 16:28:08,042 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 16:28:08,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-more-dec-subseq.wvr.yml/witness.yml [2024-06-04 16:28:08,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 16:28:08,142 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 16:28:08,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 16:28:08,144 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 16:28:08,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 16:28:08,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:28:08" (1/2) ... [2024-06-04 16:28:08,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc17a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:08, skipping insertion in model container [2024-06-04 16:28:08,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:28:08" (1/2) ... [2024-06-04 16:28:08,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3211d175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:08, skipping insertion in model container [2024-06-04 16:28:08,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:28:08" (2/2) ... [2024-06-04 16:28:08,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc17a90 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:08, skipping insertion in model container [2024-06-04 16:28:08,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:28:08" (2/2) ... [2024-06-04 16:28:08,154 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 16:28:08,174 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 16:28:08,175 INFO L97 edCorrectnessWitness]: Location invariant before [L102-L102] ((! multithreaded || 0 <= i) && (! multithreaded || (((((((((((((2147483648LL + (long long )i) + (long long )n >= 0LL && (2147483648LL + (long long )i) + (long long )start >= 0LL) && (2147483648LL + (long long )N) + (long long )i >= 0LL) && (4294967296LL + (long long )N) + (long long )n >= 0LL) && (4294967296LL + (long long )N) + (long long )start >= 0LL) && (4294967296LL + (long long )n) + (long long )start >= 0LL) && (2147483647LL - (long long )N) + (long long )i >= 0LL) && (4294967295LL - (long long )N) + (long long )n >= 0LL) && (4294967295LL - (long long )N) + (long long )start >= 0LL) && (4294967295LL - (long long )n) + (long long )start >= 0LL) && (2147483647LL + (long long )i) - (long long )n >= 0LL) && (4294967295LL + (long long )N) - (long long )n >= 0LL) && (4294967294LL - (long long )N) - (long long )n >= 0LL))) && (! multithreaded || 0 <= i) [2024-06-04 16:28:08,176 INFO L97 edCorrectnessWitness]: Location invariant before [L103-L103] ((! multithreaded || 0 <= i) && (! multithreaded || (((((((((((((2147483648LL + (long long )i) + (long long )n >= 0LL && (2147483648LL + (long long )i) + (long long )start >= 0LL) && (2147483648LL + (long long )N) + (long long )i >= 0LL) && (4294967296LL + (long long )N) + (long long )n >= 0LL) && (4294967296LL + (long long )N) + (long long )start >= 0LL) && (4294967296LL + (long long )n) + (long long )start >= 0LL) && (2147483647LL - (long long )N) + (long long )i >= 0LL) && (4294967295LL - (long long )N) + (long long )n >= 0LL) && (4294967295LL - (long long )N) + (long long )start >= 0LL) && (4294967295LL - (long long )n) + (long long )start >= 0LL) && (2147483647LL + (long long )i) - (long long )n >= 0LL) && (4294967295LL + (long long )N) - (long long )n >= 0LL) && (4294967294LL - (long long )N) - (long long )n >= 0LL))) && (! multithreaded || 0 <= i) [2024-06-04 16:28:08,176 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 16:28:08,176 INFO L106 edCorrectnessWitness]: ghost_update [L101-L101] multithreaded = 1; [2024-06-04 16:28:08,197 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 16:28:08,396 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:28:08,405 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 16:28:08,476 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:28:08,491 INFO L206 MainTranslator]: Completed translation [2024-06-04 16:28:08,492 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:08 WrapperNode [2024-06-04 16:28:08,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 16:28:08,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 16:28:08,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 16:28:08,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 16:28:08,505 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 04.06 04:28:08" (1/1) ... [2024-06-04 16:28:08,513 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 04.06 04:28:08" (1/1) ... [2024-06-04 16:28:08,542 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 12, calls inlined = 14, statements flattened = 194 [2024-06-04 16:28:08,543 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 16:28:08,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 16:28:08,544 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 16:28:08,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 16:28:08,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:08" (1/1) ... [2024-06-04 16:28:08,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:08" (1/1) ... [2024-06-04 16:28:08,558 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:08" (1/1) ... [2024-06-04 16:28:08,573 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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]. [2024-06-04 16:28:08,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:08" (1/1) ... [2024-06-04 16:28:08,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:08" (1/1) ... [2024-06-04 16:28:08,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:08" (1/1) ... [2024-06-04 16:28:08,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:08" (1/1) ... [2024-06-04 16:28:08,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:08" (1/1) ... [2024-06-04 16:28:08,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:08" (1/1) ... [2024-06-04 16:28:08,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 16:28:08,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 16:28:08,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 16:28:08,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 16:28:08,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:08" (1/1) ... [2024-06-04 16:28:08,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:28:08,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:28:08,619 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) [2024-06-04 16:28:08,636 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 [2024-06-04 16:28:08,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 16:28:08,667 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-04 16:28:08,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-04 16:28:08,667 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-04 16:28:08,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-04 16:28:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 16:28:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-04 16:28:08,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-04 16:28:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-04 16:28:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 16:28:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 16:28:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-04 16:28:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 16:28:08,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 16:28:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-04 16:28:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-04 16:28:08,672 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 16:28:08,783 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 16:28:08,785 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 16:28:09,089 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 16:28:09,090 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 16:28:09,357 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 16:28:09,358 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-04 16:28:09,358 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:28:09 BoogieIcfgContainer [2024-06-04 16:28:09,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 16:28:09,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 16:28:09,362 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 16:28:09,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 16:28:09,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 04:28:08" (1/4) ... [2024-06-04 16:28:09,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c00b7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 04:28:09, skipping insertion in model container [2024-06-04 16:28:09,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:28:08" (2/4) ... [2024-06-04 16:28:09,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c00b7cb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:28:09, skipping insertion in model container [2024-06-04 16:28:09,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:08" (3/4) ... [2024-06-04 16:28:09,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c00b7cb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:28:09, skipping insertion in model container [2024-06-04 16:28:09,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:28:09" (4/4) ... [2024-06-04 16:28:09,370 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2024-06-04 16:28:09,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 16:28:09,387 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 16:28:09,387 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 16:28:09,439 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-04 16:28:09,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 35 transitions, 84 flow [2024-06-04 16:28:09,512 INFO L124 PetriNetUnfolderBase]: 5/33 cut-off events. [2024-06-04 16:28:09,513 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-04 16:28:09,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 5/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-06-04 16:28:09,516 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 35 transitions, 84 flow [2024-06-04 16:28:09,521 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 31 transitions, 71 flow [2024-06-04 16:28:09,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 16:28:09,548 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;@3ebbc8f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 16:28:09,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 16:28:09,555 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 16:28:09,555 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2024-06-04 16:28:09,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 16:28:09,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:09,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:09,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:28:09,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:09,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1234095149, now seen corresponding path program 1 times [2024-06-04 16:28:09,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:09,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832509472] [2024-06-04 16:28:09,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:09,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:28:10,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:10,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832509472] [2024-06-04 16:28:10,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832509472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:28:10,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:28:10,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 16:28:10,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765396489] [2024-06-04 16:28:10,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:28:10,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 16:28:10,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:10,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 16:28:10,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 16:28:10,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-04 16:28:10,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:28:10,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:10,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-04 16:28:10,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:10,442 INFO L124 PetriNetUnfolderBase]: 266/466 cut-off events. [2024-06-04 16:28:10,443 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-06-04 16:28:10,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 466 events. 266/466 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2005 event pairs, 80 based on Foata normal form. 20/409 useless extension candidates. Maximal degree in co-relation 876. Up to 283 conditions per place. [2024-06-04 16:28:10,452 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 34 selfloop transitions, 3 changer transitions 1/44 dead transitions. [2024-06-04 16:28:10,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 44 transitions, 176 flow [2024-06-04 16:28:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 16:28:10,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 16:28:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-06-04 16:28:10,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2024-06-04 16:28:10,466 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 71 flow. Second operand 4 states and 73 transitions. [2024-06-04 16:28:10,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 44 transitions, 176 flow [2024-06-04 16:28:10,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 16:28:10,472 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 81 flow [2024-06-04 16:28:10,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2024-06-04 16:28:10,479 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2024-06-04 16:28:10,479 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 81 flow [2024-06-04 16:28:10,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:28:10,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:10,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:10,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 16:28:10,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:28:10,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:10,482 INFO L85 PathProgramCache]: Analyzing trace with hash -57769902, now seen corresponding path program 1 times [2024-06-04 16:28:10,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:10,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351363643] [2024-06-04 16:28:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:10,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:28:10,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:10,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351363643] [2024-06-04 16:28:10,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351363643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:28:10,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:28:10,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 16:28:10,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188782180] [2024-06-04 16:28:10,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:28:10,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 16:28:10,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:10,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 16:28:10,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 16:28:10,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-04 16:28:10,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:28:10,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:10,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-04 16:28:10,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:10,726 INFO L124 PetriNetUnfolderBase]: 231/463 cut-off events. [2024-06-04 16:28:10,726 INFO L125 PetriNetUnfolderBase]: For 29/30 co-relation queries the response was YES. [2024-06-04 16:28:10,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 463 events. 231/463 cut-off events. For 29/30 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2079 event pairs, 137 based on Foata normal form. 1/412 useless extension candidates. Maximal degree in co-relation 500. Up to 360 conditions per place. [2024-06-04 16:28:10,731 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 22 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-06-04 16:28:10,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 131 flow [2024-06-04 16:28:10,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 16:28:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 16:28:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-04 16:28:10,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-04 16:28:10,733 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 81 flow. Second operand 3 states and 54 transitions. [2024-06-04 16:28:10,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 131 flow [2024-06-04 16:28:10,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 16:28:10,736 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 89 flow [2024-06-04 16:28:10,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2024-06-04 16:28:10,737 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2024-06-04 16:28:10,738 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 89 flow [2024-06-04 16:28:10,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:28:10,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:10,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:10,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 16:28:10,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:28:10,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:10,747 INFO L85 PathProgramCache]: Analyzing trace with hash -614671749, now seen corresponding path program 1 times [2024-06-04 16:28:10,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:10,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125016413] [2024-06-04 16:28:10,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:10,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 16:28:11,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:11,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125016413] [2024-06-04 16:28:11,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125016413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:28:11,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:28:11,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 16:28:11,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002179860] [2024-06-04 16:28:11,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:28:11,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 16:28:11,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:11,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 16:28:11,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 16:28:11,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-04 16:28:11,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-04 16:28:11,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:11,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-04 16:28:11,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:11,221 INFO L124 PetriNetUnfolderBase]: 196/363 cut-off events. [2024-06-04 16:28:11,221 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-04 16:28:11,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 363 events. 196/363 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1504 event pairs, 55 based on Foata normal form. 30/347 useless extension candidates. Maximal degree in co-relation 733. Up to 178 conditions per place. [2024-06-04 16:28:11,222 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2024-06-04 16:28:11,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 179 flow [2024-06-04 16:28:11,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:28:11,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:28:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-06-04 16:28:11,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-04 16:28:11,224 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 89 flow. Second operand 5 states and 77 transitions. [2024-06-04 16:28:11,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 179 flow [2024-06-04 16:28:11,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-04 16:28:11,226 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2024-06-04 16:28:11,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2024-06-04 16:28:11,226 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-06-04 16:28:11,227 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2024-06-04 16:28:11,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-04 16:28:11,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 16:28:11,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 16:28:11,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 16:28:11,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 16:28:11,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 16:28:11,231 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-06-04 16:28:11,233 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 16:28:11,234 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 16:28:11,238 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 16:28:11,238 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 16:28:11,239 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 04:28:11 BasicIcfg [2024-06-04 16:28:11,239 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 16:28:11,239 INFO L158 Benchmark]: Toolchain (without parser) took 3097.06ms. Allocated memory was 161.5MB in the beginning and 211.8MB in the end (delta: 50.3MB). Free memory was 119.2MB in the beginning and 169.6MB in the end (delta: -50.5MB). Peak memory consumption was 94.2MB. Max. memory is 16.1GB. [2024-06-04 16:28:11,240 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 161.5MB. Free memory was 130.5MB in the beginning and 130.4MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:28:11,240 INFO L158 Benchmark]: Witness Parser took 0.09ms. Allocated memory is still 161.5MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:28:11,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.74ms. Allocated memory is still 161.5MB. Free memory was 118.7MB in the beginning and 102.4MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-04 16:28:11,241 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.40ms. Allocated memory is still 161.5MB. Free memory was 102.4MB in the beginning and 100.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 16:28:11,241 INFO L158 Benchmark]: Boogie Preprocessor took 47.82ms. Allocated memory is still 161.5MB. Free memory was 100.3MB in the beginning and 97.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 16:28:11,242 INFO L158 Benchmark]: RCFGBuilder took 766.28ms. Allocated memory is still 161.5MB. Free memory was 97.7MB in the beginning and 103.9MB in the end (delta: -6.2MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2024-06-04 16:28:11,242 INFO L158 Benchmark]: TraceAbstraction took 1877.21ms. Allocated memory was 161.5MB in the beginning and 211.8MB in the end (delta: 50.3MB). Free memory was 102.7MB in the beginning and 169.6MB in the end (delta: -66.9MB). Peak memory consumption was 76.1MB. Max. memory is 16.1GB. [2024-06-04 16:28:11,244 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 161.5MB. Free memory was 130.5MB in the beginning and 130.4MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.09ms. Allocated memory is still 161.5MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.74ms. Allocated memory is still 161.5MB. Free memory was 118.7MB in the beginning and 102.4MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.40ms. Allocated memory is still 161.5MB. Free memory was 102.4MB in the beginning and 100.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.82ms. Allocated memory is still 161.5MB. Free memory was 100.3MB in the beginning and 97.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 766.28ms. Allocated memory is still 161.5MB. Free memory was 97.7MB in the beginning and 103.9MB in the end (delta: -6.2MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1877.21ms. Allocated memory was 161.5MB in the beginning and 211.8MB in the end (delta: 50.3MB). Free memory was 102.7MB in the beginning and 169.6MB in the end (delta: -66.9MB). Peak memory consumption was 76.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 102]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 103]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 208 IncrementalHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 0 mSDtfsCounter, 208 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=2, InterpolantAutomatonStates: 12, 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, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 490 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 16:28:11,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE