./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.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/popl20-simple-array-sum.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-simple-array-sum.wvr.c ./goblint.2024-05-21_14-57-05.files/protection/popl20-simple-array-sum.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 [2024-06-03 19:01:53,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:01:54,009 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:01:54,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:01:54,016 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:01:54,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:01:54,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:01:54,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:01:54,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:01:54,051 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:01:54,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:01:54,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:01:54,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:01:54,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:01:54,053 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:01:54,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:01:54,054 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:01:54,054 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:01:54,054 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:01:54,054 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:01:54,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:01:54,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:01:54,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:01:54,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:01:54,057 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:01:54,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:01:54,057 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:01:54,058 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:01:54,058 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:01:54,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:01:54,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:01:54,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:01:54,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:01:54,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:01:54,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:01:54,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:01:54,061 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:01:54,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:01:54,061 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:01:54,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:01:54,061 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:01:54,062 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:01:54,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:01:54,062 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:01:54,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:01:54,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:01:54,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:01:54,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:01:54,334 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:01:54,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2024-06-03 19:01:55,528 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:01:55,759 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:01:55,760 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2024-06-03 19:01:55,767 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57cd83717/94380f2d19d44f62a8e088babd17e9e3/FLAG84bdd428f [2024-06-03 19:01:55,800 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57cd83717/94380f2d19d44f62a8e088babd17e9e3 [2024-06-03 19:01:55,802 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:01:55,806 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:01:55,809 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/popl20-simple-array-sum.wvr.yml/witness.yml [2024-06-03 19:01:55,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:01:55,915 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:01:55,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:01:55,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:01:55,921 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:01:55,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:01:55" (1/2) ... [2024-06-03 19:01:55,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a949a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:55, skipping insertion in model container [2024-06-03 19:01:55,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:01:55" (1/2) ... [2024-06-03 19:01:55,926 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35512751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:55, skipping insertion in model container [2024-06-03 19:01:55,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:01:55" (2/2) ... [2024-06-03 19:01:55,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a949a2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:55, skipping insertion in model container [2024-06-03 19:01:55,927 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:01:55" (2/2) ... [2024-06-03 19:01:55,928 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:01:55,946 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:01:55,947 INFO L97 edCorrectnessWitness]: Location invariant before [L96-L96] ! multithreaded || 0 <= p [2024-06-03 19:01:55,947 INFO L97 edCorrectnessWitness]: Location invariant before [L97-L97] ! multithreaded || 0 <= p [2024-06-03 19:01:55,947 INFO L97 edCorrectnessWitness]: Location invariant before [L98-L98] ! multithreaded || 0 <= p [2024-06-03 19:01:55,947 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:01:55,947 INFO L106 edCorrectnessWitness]: ghost_update [L95-L95] multithreaded = 1; [2024-06-03 19:01:55,970 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:01:56,141 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:01:56,149 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:01:56,230 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:01:56,250 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:01:56,250 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:56 WrapperNode [2024-06-03 19:01:56,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:01:56,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:01:56,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:01:56,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:01:56,258 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 03.06 07:01:56" (1/1) ... [2024-06-03 19:01:56,266 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 03.06 07:01:56" (1/1) ... [2024-06-03 19:01:56,286 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 117 [2024-06-03 19:01:56,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:01:56,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:01:56,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:01:56,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:01:56,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:56" (1/1) ... [2024-06-03 19:01:56,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:56" (1/1) ... [2024-06-03 19:01:56,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:56" (1/1) ... [2024-06-03 19:01:56,314 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-06-03 19:01:56,315 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:56" (1/1) ... [2024-06-03 19:01:56,315 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:56" (1/1) ... [2024-06-03 19:01:56,322 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:56" (1/1) ... [2024-06-03 19:01:56,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:56" (1/1) ... [2024-06-03 19:01:56,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:56" (1/1) ... [2024-06-03 19:01:56,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:56" (1/1) ... [2024-06-03 19:01:56,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:01:56,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:01:56,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:01:56,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:01:56,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:56" (1/1) ... [2024-06-03 19:01:56,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:01:56,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:01:56,363 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) [2024-06-03 19:01:56,364 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 [2024-06-03 19:01:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:01:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 19:01:56,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 19:01:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 19:01:56,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 19:01:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-03 19:01:56,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-03 19:01:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:01:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-03 19:01:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-03 19:01:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-03 19:01:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:01:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:01:56,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-03 19:01:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:01:56,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:01:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-03 19:01:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-03 19:01:56,406 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:01:56,500 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:01:56,501 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:01:56,712 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:01:56,713 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:01:56,952 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:01:56,952 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-06-03 19:01:56,952 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:01:56 BoogieIcfgContainer [2024-06-03 19:01:56,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:01:56,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:01:56,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:01:56,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:01:56,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:01:55" (1/4) ... [2024-06-03 19:01:56,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3753f632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:01:56, skipping insertion in model container [2024-06-03 19:01:56,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:01:55" (2/4) ... [2024-06-03 19:01:56,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3753f632 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:01:56, skipping insertion in model container [2024-06-03 19:01:56,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:56" (3/4) ... [2024-06-03 19:01:56,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3753f632 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:01:56, skipping insertion in model container [2024-06-03 19:01:56,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:01:56" (4/4) ... [2024-06-03 19:01:56,968 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-06-03 19:01:56,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:01:56,984 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-03 19:01:56,984 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:01:57,022 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-03 19:01:57,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 109 flow [2024-06-03 19:01:57,097 INFO L124 PetriNetUnfolderBase]: 6/41 cut-off events. [2024-06-03 19:01:57,097 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-03 19:01:57,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 6/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-03 19:01:57,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 109 flow [2024-06-03 19:01:57,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 39 transitions, 93 flow [2024-06-03 19:01:57,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:01:57,149 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;@39da8f26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:01:57,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-03 19:01:57,160 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:01:57,160 INFO L124 PetriNetUnfolderBase]: 3/11 cut-off events. [2024-06-03 19:01:57,160 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:01:57,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:57,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:57,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:57,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:57,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1916866760, now seen corresponding path program 1 times [2024-06-03 19:01:57,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:57,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008657995] [2024-06-03 19:01:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:57,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:57,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:57,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008657995] [2024-06-03 19:01:57,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008657995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:57,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:57,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:01:57,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958976987] [2024-06-03 19:01:57,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:57,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:01:57,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:57,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:01:57,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:01:57,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-03 19:01:57,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-06-03 19:01:57,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:57,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-03 19:01:57,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:57,852 INFO L124 PetriNetUnfolderBase]: 945/1485 cut-off events. [2024-06-03 19:01:57,852 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-06-03 19:01:57,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2819 conditions, 1485 events. 945/1485 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7147 event pairs, 209 based on Foata normal form. 36/1218 useless extension candidates. Maximal degree in co-relation 2523. Up to 868 conditions per place. [2024-06-03 19:01:57,869 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 39 selfloop transitions, 2 changer transitions 1/52 dead transitions. [2024-06-03 19:01:57,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 212 flow [2024-06-03 19:01:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:01:57,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:01:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-06-03 19:01:57,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-06-03 19:01:57,883 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 93 flow. Second operand 3 states and 84 transitions. [2024-06-03 19:01:57,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 212 flow [2024-06-03 19:01:57,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 198 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-03 19:01:57,894 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 96 flow [2024-06-03 19:01:57,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2024-06-03 19:01:57,899 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-06-03 19:01:57,899 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 96 flow [2024-06-03 19:01:57,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-06-03 19:01:57,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:57,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:57,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:01:57,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:57,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:57,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2139441755, now seen corresponding path program 1 times [2024-06-03 19:01:57,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:57,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202103010] [2024-06-03 19:01:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:57,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:58,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:58,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202103010] [2024-06-03 19:01:58,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202103010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:58,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:58,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:01:58,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731301053] [2024-06-03 19:01:58,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:58,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:01:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:01:58,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:01:58,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-03 19:01:58,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-06-03 19:01:58,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:58,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-03 19:01:58,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:58,362 INFO L124 PetriNetUnfolderBase]: 1492/2391 cut-off events. [2024-06-03 19:01:58,363 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-06-03 19:01:58,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4633 conditions, 2391 events. 1492/2391 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12474 event pairs, 306 based on Foata normal form. 60/2007 useless extension candidates. Maximal degree in co-relation 1272. Up to 868 conditions per place. [2024-06-03 19:01:58,378 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 52 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2024-06-03 19:01:58,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 273 flow [2024-06-03 19:01:58,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:01:58,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:01:58,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-06-03 19:01:58,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2024-06-03 19:01:58,382 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 96 flow. Second operand 4 states and 109 transitions. [2024-06-03 19:01:58,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 273 flow [2024-06-03 19:01:58,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:01:58,387 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 134 flow [2024-06-03 19:01:58,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2024-06-03 19:01:58,390 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-03 19:01:58,390 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 134 flow [2024-06-03 19:01:58,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-06-03 19:01:58,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:58,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:58,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:01:58,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:58,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1704571938, now seen corresponding path program 1 times [2024-06-03 19:01:58,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:58,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797581342] [2024-06-03 19:01:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:58,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-03 19:01:58,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:58,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797581342] [2024-06-03 19:01:58,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797581342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:58,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:58,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:01:58,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336858853] [2024-06-03 19:01:58,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:58,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:01:58,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:58,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:01:58,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:01:58,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-06-03 19:01:58,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2024-06-03 19:01:58,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:58,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-06-03 19:01:58,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:58,926 INFO L124 PetriNetUnfolderBase]: 1671/2961 cut-off events. [2024-06-03 19:01:58,926 INFO L125 PetriNetUnfolderBase]: For 818/836 co-relation queries the response was YES. [2024-06-03 19:01:58,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5950 conditions, 2961 events. 1671/2961 cut-off events. For 818/836 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 17285 event pairs, 880 based on Foata normal form. 37/2441 useless extension candidates. Maximal degree in co-relation 2740. Up to 1753 conditions per place. [2024-06-03 19:01:58,941 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 27 selfloop transitions, 4 changer transitions 35/79 dead transitions. [2024-06-03 19:01:58,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 79 transitions, 357 flow [2024-06-03 19:01:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:01:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:01:58,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-03 19:01:58,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5871212121212122 [2024-06-03 19:01:58,943 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 134 flow. Second operand 6 states and 155 transitions. [2024-06-03 19:01:58,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 79 transitions, 357 flow [2024-06-03 19:01:58,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 79 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:01:58,946 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 164 flow [2024-06-03 19:01:58,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-03 19:01:58,947 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-03 19:01:58,948 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 164 flow [2024-06-03 19:01:58,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2024-06-03 19:01:58,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:58,948 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:58,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:01:58,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:58,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1082580739, now seen corresponding path program 1 times [2024-06-03 19:01:58,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:58,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034672111] [2024-06-03 19:01:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:58,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-03 19:01:59,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:59,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034672111] [2024-06-03 19:01:59,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034672111] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-03 19:01:59,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258160478] [2024-06-03 19:01:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:59,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 19:01:59,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:01:59,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-03 19:01:59,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-03 19:01:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:59,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-03 19:01:59,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-03 19:01:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:59,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-03 19:01:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:59,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258160478] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-03 19:01:59,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-03 19:01:59,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-06-03 19:01:59,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784521493] [2024-06-03 19:01:59,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-03 19:01:59,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 19:01:59,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:59,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 19:01:59,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-03 19:01:59,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-03 19:01:59,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 164 flow. Second operand has 14 states, 14 states have (on average 14.714285714285714) internal successors, (206), 14 states have internal predecessors, (206), 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) [2024-06-03 19:01:59,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:59,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-03 19:01:59,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:59,995 INFO L124 PetriNetUnfolderBase]: 2338/3482 cut-off events. [2024-06-03 19:01:59,995 INFO L125 PetriNetUnfolderBase]: For 974/974 co-relation queries the response was YES. [2024-06-03 19:02:00,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7878 conditions, 3482 events. 2338/3482 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 18393 event pairs, 271 based on Foata normal form. 112/2956 useless extension candidates. Maximal degree in co-relation 4995. Up to 601 conditions per place. [2024-06-03 19:02:00,006 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 0 selfloop transitions, 0 changer transitions 141/141 dead transitions. [2024-06-03 19:02:00,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 141 transitions, 697 flow [2024-06-03 19:02:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:02:00,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:02:00,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 281 transitions. [2024-06-03 19:02:00,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49125874125874125 [2024-06-03 19:02:00,009 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 164 flow. Second operand 13 states and 281 transitions. [2024-06-03 19:02:00,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 141 transitions, 697 flow [2024-06-03 19:02:00,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 141 transitions, 659 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-03 19:02:00,016 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2024-06-03 19:02:00,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2024-06-03 19:02:00,016 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-06-03 19:02:00,017 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2024-06-03 19:02:00,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.714285714285714) internal successors, (206), 14 states have internal predecessors, (206), 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) [2024-06-03 19:02:00,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-03 19:02:00,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-03 19:02:00,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-03 19:02:00,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-03 19:02:00,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-03 19:02:00,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-03 19:02:00,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-03 19:02:00,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 19:02:00,235 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-06-03 19:02:00,237 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 19:02:00,237 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 19:02:00,242 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-03 19:02:00,242 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-03 19:02:00,243 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 07:02:00 BasicIcfg [2024-06-03 19:02:00,243 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 19:02:00,243 INFO L158 Benchmark]: Toolchain (without parser) took 4328.13ms. Allocated memory was 148.9MB in the beginning and 186.6MB in the end (delta: 37.7MB). Free memory was 119.1MB in the beginning and 112.5MB in the end (delta: 6.6MB). Peak memory consumption was 128.2MB. Max. memory is 16.1GB. [2024-06-03 19:02:00,244 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:02:00,244 INFO L158 Benchmark]: Witness Parser took 0.50ms. Allocated memory is still 148.9MB. Free memory is still 121.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:02:00,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.39ms. Allocated memory is still 148.9MB. Free memory was 118.5MB in the beginning and 103.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-03 19:02:00,245 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.65ms. Allocated memory is still 148.9MB. Free memory was 103.8MB in the beginning and 102.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 19:02:00,246 INFO L158 Benchmark]: Boogie Preprocessor took 51.82ms. Allocated memory is still 148.9MB. Free memory was 102.4MB in the beginning and 99.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 19:02:00,246 INFO L158 Benchmark]: RCFGBuilder took 612.48ms. Allocated memory is still 148.9MB. Free memory was 99.6MB in the beginning and 56.9MB in the end (delta: 42.7MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-06-03 19:02:00,246 INFO L158 Benchmark]: TraceAbstraction took 3288.64ms. Allocated memory was 148.9MB in the beginning and 186.6MB in the end (delta: 37.7MB). Free memory was 56.2MB in the beginning and 112.5MB in the end (delta: -56.3MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. [2024-06-03 19:02:00,254 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.50ms. Allocated memory is still 148.9MB. Free memory is still 121.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.39ms. Allocated memory is still 148.9MB. Free memory was 118.5MB in the beginning and 103.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.65ms. Allocated memory is still 148.9MB. Free memory was 103.8MB in the beginning and 102.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.82ms. Allocated memory is still 148.9MB. Free memory was 102.4MB in the beginning and 99.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 612.48ms. Allocated memory is still 148.9MB. Free memory was 99.6MB in the beginning and 56.9MB in the end (delta: 42.7MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3288.64ms. Allocated memory was 148.9MB in the beginning and 186.6MB in the end (delta: 37.7MB). Free memory was 56.2MB in the beginning and 112.5MB in the end (delta: -56.3MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 96]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 97]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 98]: 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 7 procedures, 59 locations, 6 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: 3.2s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 312 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 278 mSDsluCounter, 190 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 160 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 964 IncrementalHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 30 mSDtfsCounter, 964 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=3, InterpolantAutomatonStates: 26, 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, 0.6s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 3 NumberOfNonLiveVariables, 150 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 13/18 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 19:02:00,285 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