./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-sre-symm.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/protection/chl-sre-symm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c ./goblint.2024-05-21_14-57-05.files/protection/chl-sre-symm.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-76401ed-m [2024-06-20 15:38:02,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 15:38:03,192 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 15:38:03,195 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 15:38:03,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 15:38:03,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 15:38:03,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 15:38:03,210 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 15:38:03,211 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 15:38:03,214 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 15:38:03,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 15:38:03,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 15:38:03,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 15:38:03,216 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 15:38:03,217 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 15:38:03,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 15:38:03,217 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 15:38:03,217 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 15:38:03,218 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 15:38:03,218 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 15:38:03,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 15:38:03,219 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 15:38:03,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 15:38:03,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 15:38:03,220 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 15:38:03,220 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 15:38:03,220 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 15:38:03,220 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 15:38:03,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 15:38:03,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 15:38:03,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 15:38:03,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 15:38:03,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:38:03,222 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 15:38:03,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 15:38:03,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 15:38:03,223 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 15:38:03,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 15:38:03,223 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 15:38:03,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 15:38:03,224 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 15:38:03,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 15:38:03,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 15:38:03,224 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 15:38:03,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 15:38:03,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 15:38:03,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 15:38:03,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 15:38:03,458 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 15:38:03,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c [2024-06-20 15:38:04,559 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 15:38:04,714 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 15:38:04,715 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-symm.wvr.c [2024-06-20 15:38:04,720 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4498d5a1/ec3a151703144e01a02d6303838cef0c/FLAG1155c80ce [2024-06-20 15:38:04,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4498d5a1/ec3a151703144e01a02d6303838cef0c [2024-06-20 15:38:04,734 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 15:38:04,739 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 15:38:04,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/chl-sre-symm.wvr.yml/witness.yml [2024-06-20 15:38:04,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 15:38:04,815 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 15:38:04,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 15:38:04,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 15:38:04,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 15:38:04,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:38:04" (1/2) ... [2024-06-20 15:38:04,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3c570c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:04, skipping insertion in model container [2024-06-20 15:38:04,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:38:04" (1/2) ... [2024-06-20 15:38:04,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@76db05a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:38:04, skipping insertion in model container [2024-06-20 15:38:04,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:38:04" (2/2) ... [2024-06-20 15:38:04,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3c570c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:04, skipping insertion in model container [2024-06-20 15:38:04,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:38:04" (2/2) ... [2024-06-20 15:38:04,825 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 15:38:04,834 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 15:38:04,835 INFO L97 edCorrectnessWitness]: Location invariant before [L62-L62] (! multithreaded || ((((-128 <= result_3 && -1 <= result_3) && result_3 <= 1) && result_3 <= 127) && ((result_3 == -1 || result_3 == 0) || result_3 == 1))) && (! multithreaded || ((((-128 <= result_2 && -1 <= result_2) && result_2 <= 1) && result_2 <= 127) && ((result_2 == -1 || result_2 == 0) || result_2 == 1))) [2024-06-20 15:38:04,835 INFO L97 edCorrectnessWitness]: Location invariant before [L63-L63] (! multithreaded || ((((-128 <= result_3 && -1 <= result_3) && result_3 <= 1) && result_3 <= 127) && ((result_3 == -1 || result_3 == 0) || result_3 == 1))) && (! multithreaded || ((((-128 <= result_2 && -1 <= result_2) && result_2 <= 1) && result_2 <= 127) && ((result_2 == -1 || result_2 == 0) || result_2 == 1))) [2024-06-20 15:38:04,836 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 15:38:04,836 INFO L106 edCorrectnessWitness]: ghost_update [L61-L61] multithreaded = 1; [2024-06-20 15:38:04,851 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 15:38:05,054 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:38:05,063 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 15:38:05,139 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:38:05,153 INFO L206 MainTranslator]: Completed translation [2024-06-20 15:38:05,153 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:05 WrapperNode [2024-06-20 15:38:05,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 15:38:05,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 15:38:05,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 15:38:05,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 15:38:05,161 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 20.06 03:38:05" (1/1) ... [2024-06-20 15:38:05,174 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 20.06 03:38:05" (1/1) ... [2024-06-20 15:38:05,198 INFO L138 Inliner]: procedures = 20, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 58 [2024-06-20 15:38:05,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 15:38:05,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 15:38:05,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 15:38:05,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 15:38:05,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:05" (1/1) ... [2024-06-20 15:38:05,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:05" (1/1) ... [2024-06-20 15:38:05,210 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:05" (1/1) ... [2024-06-20 15:38:05,226 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-20 15:38:05,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:05" (1/1) ... [2024-06-20 15:38:05,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:05" (1/1) ... [2024-06-20 15:38:05,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:05" (1/1) ... [2024-06-20 15:38:05,230 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:05" (1/1) ... [2024-06-20 15:38:05,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:05" (1/1) ... [2024-06-20 15:38:05,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:05" (1/1) ... [2024-06-20 15:38:05,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 15:38:05,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 15:38:05,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 15:38:05,236 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 15:38:05,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:05" (1/1) ... [2024-06-20 15:38:05,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:38:05,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 15:38:05,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-20 15:38:05,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-20 15:38:05,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 15:38:05,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-20 15:38:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-20 15:38:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-20 15:38:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-20 15:38:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 15:38:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 15:38:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 15:38:05,310 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 15:38:05,377 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 15:38:05,379 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 15:38:05,542 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 15:38:05,542 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 15:38:05,629 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 15:38:05,629 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 15:38:05,629 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:38:05 BoogieIcfgContainer [2024-06-20 15:38:05,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 15:38:05,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 15:38:05,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 15:38:05,633 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 15:38:05,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 03:38:04" (1/4) ... [2024-06-20 15:38:05,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ddd615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 03:38:05, skipping insertion in model container [2024-06-20 15:38:05,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:38:04" (2/4) ... [2024-06-20 15:38:05,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ddd615 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:38:05, skipping insertion in model container [2024-06-20 15:38:05,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:38:05" (3/4) ... [2024-06-20 15:38:05,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ddd615 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:38:05, skipping insertion in model container [2024-06-20 15:38:05,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:38:05" (4/4) ... [2024-06-20 15:38:05,635 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-symm.wvr.c [2024-06-20 15:38:05,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 15:38:05,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 15:38:05,648 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 15:38:05,672 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-20 15:38:05,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 17 transitions, 48 flow [2024-06-20 15:38:05,732 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2024-06-20 15:38:05,739 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-20 15:38:05,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 15 events. 0/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-20 15:38:05,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 17 transitions, 48 flow [2024-06-20 15:38:05,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 18 places, 11 transitions, 28 flow [2024-06-20 15:38:05,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 15:38:05,765 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;@42decc51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 15:38:05,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 15:38:05,774 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 15:38:05,774 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 15:38:05,775 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:38:05,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:38:05,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 15:38:05,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:38:05,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:38:05,781 INFO L85 PathProgramCache]: Analyzing trace with hash 196354048, now seen corresponding path program 1 times [2024-06-20 15:38:05,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:38:05,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709342794] [2024-06-20 15:38:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:38:05,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:38:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:38:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:38:06,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:38:06,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709342794] [2024-06-20 15:38:06,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709342794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:38:06,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:38:06,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 15:38:06,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020054955] [2024-06-20 15:38:06,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:38:06,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 15:38:06,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:38:06,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 15:38:06,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 15:38:06,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 17 [2024-06-20 15:38:06,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:38:06,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:38:06,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 17 [2024-06-20 15:38:06,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:38:06,183 INFO L124 PetriNetUnfolderBase]: 10/30 cut-off events. [2024-06-20 15:38:06,184 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-20 15:38:06,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 30 events. 10/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 1 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 58. Up to 24 conditions per place. [2024-06-20 15:38:06,186 INFO L140 encePairwiseOnDemand]: 12/17 looper letters, 13 selfloop transitions, 3 changer transitions 0/17 dead transitions. [2024-06-20 15:38:06,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 17 transitions, 75 flow [2024-06-20 15:38:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 15:38:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 15:38:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2024-06-20 15:38:06,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-06-20 15:38:06,198 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 28 flow. Second operand 3 states and 30 transitions. [2024-06-20 15:38:06,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 17 transitions, 75 flow [2024-06-20 15:38:06,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 15:38:06,203 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 47 flow [2024-06-20 15:38:06,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2024-06-20 15:38:06,207 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2024-06-20 15:38:06,207 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 47 flow [2024-06-20 15:38:06,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:38:06,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:38:06,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-20 15:38:06,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 15:38:06,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:38:06,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:38:06,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1792008581, now seen corresponding path program 1 times [2024-06-20 15:38:06,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:38:06,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254954898] [2024-06-20 15:38:06,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:38:06,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:38:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:38:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:38:06,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:38:06,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254954898] [2024-06-20 15:38:06,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254954898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:38:06,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:38:06,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 15:38:06,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519837424] [2024-06-20 15:38:06,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:38:06,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:38:06,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:38:06,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:38:06,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:38:06,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 17 [2024-06-20 15:38:06,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:38:06,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:38:06,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 17 [2024-06-20 15:38:06,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:38:06,423 INFO L124 PetriNetUnfolderBase]: 9/27 cut-off events. [2024-06-20 15:38:06,423 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-20 15:38:06,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 27 events. 9/27 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 4 based on Foata normal form. 2/29 useless extension candidates. Maximal degree in co-relation 73. Up to 15 conditions per place. [2024-06-20 15:38:06,424 INFO L140 encePairwiseOnDemand]: 13/17 looper letters, 9 selfloop transitions, 3 changer transitions 0/13 dead transitions. [2024-06-20 15:38:06,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 13 transitions, 69 flow [2024-06-20 15:38:06,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 15:38:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 15:38:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 25 transitions. [2024-06-20 15:38:06,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-06-20 15:38:06,425 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 47 flow. Second operand 3 states and 25 transitions. [2024-06-20 15:38:06,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 13 transitions, 69 flow [2024-06-20 15:38:06,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 15:38:06,426 INFO L231 Difference]: Finished difference. Result has 20 places, 12 transitions, 51 flow [2024-06-20 15:38:06,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2024-06-20 15:38:06,427 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2024-06-20 15:38:06,427 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 51 flow [2024-06-20 15:38:06,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:38:06,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:38:06,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:38:06,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 15:38:06,428 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:38:06,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:38:06,429 INFO L85 PathProgramCache]: Analyzing trace with hash -720859540, now seen corresponding path program 1 times [2024-06-20 15:38:06,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:38:06,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619184689] [2024-06-20 15:38:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:38:06,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:38:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:38:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:38:06,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:38:06,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619184689] [2024-06-20 15:38:06,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619184689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:38:06,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:38:06,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 15:38:06,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282650056] [2024-06-20 15:38:06,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:38:06,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:38:06,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:38:06,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:38:06,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:38:06,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 17 [2024-06-20 15:38:06,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:38:06,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:38:06,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 17 [2024-06-20 15:38:06,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:38:06,563 INFO L124 PetriNetUnfolderBase]: 8/25 cut-off events. [2024-06-20 15:38:06,563 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-06-20 15:38:06,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 25 events. 8/25 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 1 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 69. Up to 16 conditions per place. [2024-06-20 15:38:06,565 INFO L140 encePairwiseOnDemand]: 14/17 looper letters, 12 selfloop transitions, 3 changer transitions 0/16 dead transitions. [2024-06-20 15:38:06,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 16 transitions, 91 flow [2024-06-20 15:38:06,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 15:38:06,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 15:38:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2024-06-20 15:38:06,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-06-20 15:38:06,567 INFO L175 Difference]: Start difference. First operand has 20 places, 12 transitions, 51 flow. Second operand 3 states and 27 transitions. [2024-06-20 15:38:06,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 16 transitions, 91 flow [2024-06-20 15:38:06,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 85 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 15:38:06,569 INFO L231 Difference]: Finished difference. Result has 21 places, 12 transitions, 56 flow [2024-06-20 15:38:06,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=21, PETRI_TRANSITIONS=12} [2024-06-20 15:38:06,570 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2024-06-20 15:38:06,571 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 12 transitions, 56 flow [2024-06-20 15:38:06,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:38:06,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:38:06,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:38:06,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 15:38:06,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:38:06,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:38:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash -871809591, now seen corresponding path program 1 times [2024-06-20 15:38:06,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:38:06,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424247267] [2024-06-20 15:38:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:38:06,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:38:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:38:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:38:06,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:38:06,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424247267] [2024-06-20 15:38:06,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424247267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:38:06,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:38:06,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:38:06,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877532986] [2024-06-20 15:38:06,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:38:06,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:38:06,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:38:06,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:38:06,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:38:06,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 17 [2024-06-20 15:38:06,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 12 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:38:06,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:38:06,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 17 [2024-06-20 15:38:06,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:38:06,982 INFO L124 PetriNetUnfolderBase]: 8/24 cut-off events. [2024-06-20 15:38:06,982 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-06-20 15:38:06,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 24 events. 8/24 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 1 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 75. Up to 14 conditions per place. [2024-06-20 15:38:06,984 INFO L140 encePairwiseOnDemand]: 14/17 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2024-06-20 15:38:06,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 86 flow [2024-06-20 15:38:06,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 15:38:06,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 15:38:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2024-06-20 15:38:06,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-06-20 15:38:06,986 INFO L175 Difference]: Start difference. First operand has 21 places, 12 transitions, 56 flow. Second operand 4 states and 30 transitions. [2024-06-20 15:38:06,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 86 flow [2024-06-20 15:38:06,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-20 15:38:06,988 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2024-06-20 15:38:06,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2024-06-20 15:38:06,989 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2024-06-20 15:38:06,989 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2024-06-20 15:38:06,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:38:06,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 15:38:06,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 15:38:06,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 15:38:06,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 15:38:06,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 15:38:06,996 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-06-20 15:38:06,999 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 15:38:06,999 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 15:38:07,003 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 15:38:07,003 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 15:38:07,004 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 03:38:07 BasicIcfg [2024-06-20 15:38:07,004 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 15:38:07,006 INFO L158 Benchmark]: Toolchain (without parser) took 2189.13ms. Allocated memory was 111.1MB in the beginning and 151.0MB in the end (delta: 39.8MB). Free memory was 54.1MB in the beginning and 97.6MB in the end (delta: -43.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:38:07,008 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 111.1MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:38:07,008 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 111.1MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:38:07,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.53ms. Allocated memory is still 111.1MB. Free memory was 53.9MB in the beginning and 79.6MB in the end (delta: -25.7MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2024-06-20 15:38:07,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.14ms. Allocated memory is still 111.1MB. Free memory was 79.2MB in the beginning and 77.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 15:38:07,009 INFO L158 Benchmark]: Boogie Preprocessor took 34.69ms. Allocated memory is still 111.1MB. Free memory was 77.5MB in the beginning and 75.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 15:38:07,009 INFO L158 Benchmark]: RCFGBuilder took 393.30ms. Allocated memory is still 111.1MB. Free memory was 75.8MB in the beginning and 52.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-20 15:38:07,012 INFO L158 Benchmark]: TraceAbstraction took 1373.56ms. Allocated memory was 111.1MB in the beginning and 151.0MB in the end (delta: 39.8MB). Free memory was 52.0MB in the beginning and 97.6MB in the end (delta: -45.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:38:07,013 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 111.1MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 111.1MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.53ms. Allocated memory is still 111.1MB. Free memory was 53.9MB in the beginning and 79.6MB in the end (delta: -25.7MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.14ms. Allocated memory is still 111.1MB. Free memory was 79.2MB in the beginning and 77.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.69ms. Allocated memory is still 111.1MB. Free memory was 77.5MB in the beginning and 75.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 393.30ms. Allocated memory is still 111.1MB. Free memory was 75.8MB in the beginning and 52.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1373.56ms. Allocated memory was 111.1MB in the beginning and 151.0MB in the end (delta: 39.8MB). Free memory was 52.0MB in the beginning and 97.6MB in the end (delta: -45.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 62]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 63]: 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, 24 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: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 1 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=3, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 177 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-20 15:38:07,040 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