./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-context1.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/test-context1.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/test-context1.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/test-context1.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 21:03:19,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 21:03:19,509 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 21:03:19,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 21:03:19,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 21:03:19,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 21:03:19,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 21:03:19,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 21:03:19,556 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 21:03:19,560 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 21:03:19,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 21:03:19,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 21:03:19,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 21:03:19,562 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 21:03:19,562 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 21:03:19,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 21:03:19,563 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 21:03:19,563 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 21:03:19,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 21:03:19,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 21:03:19,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 21:03:19,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 21:03:19,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 21:03:19,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 21:03:19,565 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 21:03:19,565 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 21:03:19,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 21:03:19,566 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 21:03:19,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 21:03:19,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 21:03:19,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 21:03:19,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 21:03:19,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:03:19,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 21:03:19,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 21:03:19,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 21:03:19,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 21:03:19,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 21:03:19,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 21:03:19,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 21:03:19,570 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 21:03:19,571 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 21:03:19,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 21:03:19,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 21:03:19,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 21:03:19,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 21:03:19,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 21:03:19,893 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 21:03:19,894 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 21:03:19,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/test-context1.wvr.yml/witness.yml [2024-06-03 21:03:20,002 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 21:03:20,002 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 21:03:20,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2024-06-03 21:03:21,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 21:03:21,284 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 21:03:21,284 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2024-06-03 21:03:21,291 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c627e755a/370150a297194001a3bcc1753cc21bb0/FLAG2f3292626 [2024-06-03 21:03:21,306 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c627e755a/370150a297194001a3bcc1753cc21bb0 [2024-06-03 21:03:21,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 21:03:21,308 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 21:03:21,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 21:03:21,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 21:03:21,314 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 21:03:21,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:03:20" (1/2) ... [2024-06-03 21:03:21,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292f69b3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:21, skipping insertion in model container [2024-06-03 21:03:21,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:03:20" (1/2) ... [2024-06-03 21:03:21,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4281f6b3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:21, skipping insertion in model container [2024-06-03 21:03:21,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:03:21" (2/2) ... [2024-06-03 21:03:21,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292f69b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21, skipping insertion in model container [2024-06-03 21:03:21,318 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:03:21" (2/2) ... [2024-06-03 21:03:21,319 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 21:03:21,333 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 21:03:21,334 INFO L97 edCorrectnessWitness]: Location invariant before [L81-L81] ((! multithreaded || 0 <= front) && (! multithreaded || ((2147483648LL + (long long )front) + (long long )n >= 0LL && (2147483647LL + (long long )front) - (long long )n >= 0LL))) && (! multithreaded || 0 <= front) [2024-06-03 21:03:21,334 INFO L97 edCorrectnessWitness]: Location invariant before [L80-L80] ((! multithreaded || 0 <= front) && (! multithreaded || ((2147483648LL + (long long )front) + (long long )n >= 0LL && (2147483647LL + (long long )front) - (long long )n >= 0LL))) && (! multithreaded || 0 <= front) [2024-06-03 21:03:21,334 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 21:03:21,334 INFO L106 edCorrectnessWitness]: ghost_update [L79-L79] multithreaded = 1; [2024-06-03 21:03:21,355 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 21:03:21,513 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:03:21,521 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 21:03:21,574 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:03:21,593 INFO L206 MainTranslator]: Completed translation [2024-06-03 21:03:21,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21 WrapperNode [2024-06-03 21:03:21,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 21:03:21,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 21:03:21,596 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 21:03:21,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 21:03:21,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21" (1/1) ... [2024-06-03 21:03:21,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21" (1/1) ... [2024-06-03 21:03:21,658 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 132 [2024-06-03 21:03:21,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 21:03:21,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 21:03:21,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 21:03:21,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 21:03:21,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21" (1/1) ... [2024-06-03 21:03:21,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21" (1/1) ... [2024-06-03 21:03:21,685 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21" (1/1) ... [2024-06-03 21:03:21,703 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-06-03 21:03:21,703 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21" (1/1) ... [2024-06-03 21:03:21,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21" (1/1) ... [2024-06-03 21:03:21,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21" (1/1) ... [2024-06-03 21:03:21,724 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21" (1/1) ... [2024-06-03 21:03:21,726 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21" (1/1) ... [2024-06-03 21:03:21,727 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21" (1/1) ... [2024-06-03 21:03:21,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 21:03:21,730 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 21:03:21,730 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 21:03:21,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 21:03:21,731 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21" (1/1) ... [2024-06-03 21:03:21,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:03:21,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:03:21,765 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 21:03:21,790 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 21:03:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 21:03:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 21:03:21,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 21:03:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 21:03:21,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 21:03:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 21:03:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-03 21:03:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-03 21:03:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-03 21:03:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 21:03:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 21:03:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-03 21:03:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 21:03:21,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 21:03:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-03 21:03:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-03 21:03:21,813 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 21:03:22,026 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 21:03:22,029 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 21:03:22,299 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 21:03:22,300 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 21:03:22,486 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 21:03:22,486 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-06-03 21:03:22,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:03:22 BoogieIcfgContainer [2024-06-03 21:03:22,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 21:03:22,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 21:03:22,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 21:03:22,493 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 21:03:22,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:03:20" (1/4) ... [2024-06-03 21:03:22,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d4b5b2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 09:03:22, skipping insertion in model container [2024-06-03 21:03:22,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 09:03:21" (2/4) ... [2024-06-03 21:03:22,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d4b5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 09:03:22, skipping insertion in model container [2024-06-03 21:03:22,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:21" (3/4) ... [2024-06-03 21:03:22,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d4b5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 09:03:22, skipping insertion in model container [2024-06-03 21:03:22,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:03:22" (4/4) ... [2024-06-03 21:03:22,499 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2024-06-03 21:03:22,514 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 21:03:22,514 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 21:03:22,514 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 21:03:22,570 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-03 21:03:22,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 74 flow [2024-06-03 21:03:22,634 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2024-06-03 21:03:22,634 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-03 21:03:22,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 5/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-06-03 21:03:22,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 30 transitions, 74 flow [2024-06-03 21:03:22,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 26 transitions, 61 flow [2024-06-03 21:03:22,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 21:03:22,656 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;@5c1b7935, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 21:03:22,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 21:03:22,662 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 21:03:22,662 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2024-06-03 21:03:22,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 21:03:22,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:22,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:22,664 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)] === [2024-06-03 21:03:22,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1016127284, now seen corresponding path program 1 times [2024-06-03 21:03:22,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:22,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718550197] [2024-06-03 21:03:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:22,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:23,057 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 21:03:23,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:23,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718550197] [2024-06-03 21:03:23,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718550197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:23,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:23,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 21:03:23,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664335828] [2024-06-03 21:03:23,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:23,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 21:03:23,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:23,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 21:03:23,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 21:03:23,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2024-06-03 21:03:23,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 26 transitions, 61 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) [2024-06-03 21:03:23,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:23,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2024-06-03 21:03:23,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:23,259 INFO L124 PetriNetUnfolderBase]: 227/386 cut-off events. [2024-06-03 21:03:23,259 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-06-03 21:03:23,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 386 events. 227/386 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1282 event pairs, 92 based on Foata normal form. 25/354 useless extension candidates. Maximal degree in co-relation 725. Up to 222 conditions per place. [2024-06-03 21:03:23,273 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 28 selfloop transitions, 2 changer transitions 4/35 dead transitions. [2024-06-03 21:03:23,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 35 transitions, 150 flow [2024-06-03 21:03:23,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 21:03:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 21:03:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-03 21:03:23,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-03 21:03:23,287 INFO L175 Difference]: Start difference. First operand has 28 places, 26 transitions, 61 flow. Second operand 3 states and 49 transitions. [2024-06-03 21:03:23,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 35 transitions, 150 flow [2024-06-03 21:03:23,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 35 transitions, 143 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 21:03:23,294 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 59 flow [2024-06-03 21:03:23,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2024-06-03 21:03:23,302 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2024-06-03 21:03:23,302 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 59 flow [2024-06-03 21:03:23,302 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) [2024-06-03 21:03:23,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:23,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:23,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 21:03:23,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 21:03:23,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:23,304 INFO L85 PathProgramCache]: Analyzing trace with hash 215906525, now seen corresponding path program 1 times [2024-06-03 21:03:23,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:23,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387875316] [2024-06-03 21:03:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:23,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:23,495 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 21:03:23,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:23,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387875316] [2024-06-03 21:03:23,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387875316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:23,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:23,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 21:03:23,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111495467] [2024-06-03 21:03:23,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:23,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 21:03:23,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 21:03:23,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 21:03:23,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-03 21:03:23,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 21:03:23,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:23,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-03 21:03:23,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:23,620 INFO L124 PetriNetUnfolderBase]: 252/446 cut-off events. [2024-06-03 21:03:23,621 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-06-03 21:03:23,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 446 events. 252/446 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1586 event pairs, 108 based on Foata normal form. 10/384 useless extension candidates. Maximal degree in co-relation 616. Up to 299 conditions per place. [2024-06-03 21:03:23,628 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 28 selfloop transitions, 2 changer transitions 4/36 dead transitions. [2024-06-03 21:03:23,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 36 transitions, 155 flow [2024-06-03 21:03:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 21:03:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 21:03:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-03 21:03:23,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-03 21:03:23,633 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 59 flow. Second operand 3 states and 49 transitions. [2024-06-03 21:03:23,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 36 transitions, 155 flow [2024-06-03 21:03:23,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 36 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 21:03:23,638 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 69 flow [2024-06-03 21:03:23,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2024-06-03 21:03:23,639 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2024-06-03 21:03:23,639 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 69 flow [2024-06-03 21:03:23,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 21:03:23,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:23,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:23,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 21:03:23,643 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)] === [2024-06-03 21:03:23,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:23,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2121874942, now seen corresponding path program 1 times [2024-06-03 21:03:23,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:23,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670565288] [2024-06-03 21:03:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:23,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:23,857 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 21:03:23,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:23,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670565288] [2024-06-03 21:03:23,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670565288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:23,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:23,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 21:03:23,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215616660] [2024-06-03 21:03:23,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:23,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 21:03:23,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:23,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 21:03:23,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 21:03:23,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-03 21:03:23,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 21:03:23,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:23,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-03 21:03:23,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:24,002 INFO L124 PetriNetUnfolderBase]: 320/593 cut-off events. [2024-06-03 21:03:24,002 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-06-03 21:03:24,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 593 events. 320/593 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2363 event pairs, 281 based on Foata normal form. 13/510 useless extension candidates. Maximal degree in co-relation 950. Up to 437 conditions per place. [2024-06-03 21:03:24,005 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 21 selfloop transitions, 2 changer transitions 16/41 dead transitions. [2024-06-03 21:03:24,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 184 flow [2024-06-03 21:03:24,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 21:03:24,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 21:03:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-06-03 21:03:24,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-03 21:03:24,008 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 69 flow. Second operand 4 states and 58 transitions. [2024-06-03 21:03:24,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 184 flow [2024-06-03 21:03:24,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 21:03:24,011 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 81 flow [2024-06-03 21:03:24,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-06-03 21:03:24,012 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-03 21:03:24,013 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 81 flow [2024-06-03 21:03:24,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 21:03:24,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:24,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:24,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 21:03:24,014 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)] === [2024-06-03 21:03:24,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2145255619, now seen corresponding path program 1 times [2024-06-03 21:03:24,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:24,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365587352] [2024-06-03 21:03:24,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:24,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:24,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:24,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365587352] [2024-06-03 21:03:24,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365587352] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-03 21:03:24,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257850279] [2024-06-03 21:03:24,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:24,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:03:24,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:03:24,247 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 21:03:24,265 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 21:03:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:24,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-03 21:03:24,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-03 21:03:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:24,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-03 21:03:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:24,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257850279] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-03 21:03:24,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-03 21:03:24,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 10 [2024-06-03 21:03:24,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305765812] [2024-06-03 21:03:24,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:24,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:03:24,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:24,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:03:24,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-03 21:03:24,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2024-06-03 21:03:24,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 21:03:24,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:24,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2024-06-03 21:03:24,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:24,743 INFO L124 PetriNetUnfolderBase]: 247/442 cut-off events. [2024-06-03 21:03:24,743 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-06-03 21:03:24,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 442 events. 247/442 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1568 event pairs, 213 based on Foata normal form. 25/400 useless extension candidates. Maximal degree in co-relation 972. Up to 432 conditions per place. [2024-06-03 21:03:24,744 INFO L140 encePairwiseOnDemand]: 28/30 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2024-06-03 21:03:24,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 123 flow [2024-06-03 21:03:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 21:03:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 21:03:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2024-06-03 21:03:24,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 21:03:24,746 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 81 flow. Second operand 3 states and 30 transitions. [2024-06-03 21:03:24,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 123 flow [2024-06-03 21:03:24,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 117 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-03 21:03:24,747 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2024-06-03 21:03:24,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2024-06-03 21:03:24,748 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2024-06-03 21:03:24,748 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2024-06-03 21:03:24,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 21:03:24,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 21:03:24,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 21:03:24,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 21:03:24,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 21:03:24,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-03 21:03:24,967 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 21:03:24,967 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-06-03 21:03:24,970 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 21:03:24,970 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 21:03:24,974 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 21:03:24,974 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 21:03:24,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 09:03:24 BasicIcfg [2024-06-03 21:03:24,975 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 21:03:24,976 INFO L158 Benchmark]: Toolchain (without parser) took 3668.27ms. Allocated memory was 159.4MB in the beginning and 209.7MB in the end (delta: 50.3MB). Free memory was 125.2MB in the beginning and 103.6MB in the end (delta: 21.6MB). Peak memory consumption was 72.7MB. Max. memory is 16.1GB. [2024-06-03 21:03:24,976 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:03:24,976 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:03:24,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.59ms. Allocated memory is still 159.4MB. Free memory was 125.2MB in the beginning and 110.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-03 21:03:24,977 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.08ms. Allocated memory is still 159.4MB. Free memory was 110.6MB in the beginning and 108.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 21:03:24,977 INFO L158 Benchmark]: Boogie Preprocessor took 68.92ms. Allocated memory is still 159.4MB. Free memory was 108.4MB in the beginning and 106.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 21:03:24,977 INFO L158 Benchmark]: RCFGBuilder took 757.76ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 97.6MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-06-03 21:03:24,978 INFO L158 Benchmark]: TraceAbstraction took 2484.90ms. Allocated memory was 159.4MB in the beginning and 209.7MB in the end (delta: 50.3MB). Free memory was 97.6MB in the beginning and 103.6MB in the end (delta: -6.0MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2024-06-03 21:03:24,982 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.59ms. Allocated memory is still 159.4MB. Free memory was 125.2MB in the beginning and 110.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.08ms. Allocated memory is still 159.4MB. Free memory was 110.6MB in the beginning and 108.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.92ms. Allocated memory is still 159.4MB. Free memory was 108.4MB in the beginning and 106.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 757.76ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 97.6MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2484.90ms. Allocated memory was 159.4MB in the beginning and 209.7MB in the end (delta: 50.3MB). Free memory was 97.6MB in the beginning and 103.6MB in the end (delta: -6.0MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 81]: 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, 38 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: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 177 IncrementalHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 1 mSDtfsCounter, 177 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred 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, 1.1s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 767 SizeOfPredicates, 3 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 1/3 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! [2024-06-03 21:03:25,012 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