./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/security.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/security.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/security.wvr.c ./goblint.2024-05-07_14-17-48.files/mutex-meet/security.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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 11:04:21,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 11:04:21,309 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 11:04:21,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 11:04:21,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 11:04:21,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 11:04:21,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 11:04:21,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 11:04:21,370 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 11:04:21,376 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 11:04:21,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 11:04:21,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 11:04:21,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 11:04:21,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 11:04:21,380 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 11:04:21,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 11:04:21,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 11:04:21,381 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 11:04:21,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 11:04:21,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 11:04:21,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 11:04:21,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 11:04:21,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 11:04:21,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 11:04:21,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 11:04:21,384 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 11:04:21,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 11:04:21,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 11:04:21,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 11:04:21,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 11:04:21,386 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 11:04:21,386 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 11:04:21,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:04:21,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 11:04:21,387 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 11:04:21,387 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 11:04:21,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 11:04:21,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 11:04:21,388 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 11:04:21,388 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 11:04:21,388 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 11:04:21,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 11:04:21,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 11:04:21,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 11:04:21,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 11:04:21,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 11:04:21,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 11:04:21,685 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 11:04:21,686 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 11:04:21,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/security.wvr.c [2024-05-12 11:04:22,797 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 11:04:22,946 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 11:04:22,947 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/security.wvr.c [2024-05-12 11:04:22,953 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef179d99/591ec66948a343f1b98ac574baac243c/FLAG431df07aa [2024-05-12 11:04:22,964 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef179d99/591ec66948a343f1b98ac574baac243c [2024-05-12 11:04:22,966 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 11:04:22,966 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 11:04:22,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/security.wvr.yml/witness.yml [2024-05-12 11:04:23,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 11:04:23,031 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 11:04:23,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 11:04:23,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 11:04:23,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 11:04:23,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:04:22" (1/2) ... [2024-05-12 11:04:23,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c24da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:23, skipping insertion in model container [2024-05-12 11:04:23,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:04:22" (1/2) ... [2024-05-12 11:04:23,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4764ca1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:04:23, skipping insertion in model container [2024-05-12 11:04:23,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:04:23" (2/2) ... [2024-05-12 11:04:23,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c24da6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:23, skipping insertion in model container [2024-05-12 11:04:23,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:04:23" (2/2) ... [2024-05-12 11:04:23,043 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 11:04:23,061 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 11:04:23,062 INFO L97 edCorrectnessWitness]: Location invariant before [L72-L72] (((! multithreaded || (z1 <= 1U && (z1 == 0U || z1 == 1U))) && (! multithreaded || (x1 <= 1U && (x1 == 0U || x1 == 1U)))) && (! multithreaded || (z2 <= 1U && (z2 == 0U || z2 == 1U)))) && (! multithreaded || (x2 <= 1U && (x2 == 0U || x2 == 1U))) [2024-05-12 11:04:23,062 INFO L97 edCorrectnessWitness]: Location invariant before [L71-L71] (((! multithreaded || (z1 <= 1U && (z1 == 0U || z1 == 1U))) && (! multithreaded || (x1 <= 1U && (x1 == 0U || x1 == 1U)))) && (! multithreaded || (z2 <= 1U && (z2 == 0U || z2 == 1U)))) && (! multithreaded || (x2 <= 1U && (x2 == 0U || x2 == 1U))) [2024-05-12 11:04:23,062 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 11:04:23,063 INFO L106 edCorrectnessWitness]: ghost_update [L70-L70] multithreaded = 1; [2024-05-12 11:04:23,078 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 11:04:23,239 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/security.wvr.c[1931,1944] [2024-05-12 11:04:23,246 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:04:23,258 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 11:04:23,306 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/security.wvr.c[1931,1944] [2024-05-12 11:04:23,307 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:04:23,334 INFO L206 MainTranslator]: Completed translation [2024-05-12 11:04:23,334 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:23 WrapperNode [2024-05-12 11:04:23,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 11:04:23,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 11:04:23,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 11:04:23,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 11:04:23,341 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 12.05 11:04:23" (1/1) ... [2024-05-12 11:04:23,356 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 12.05 11:04:23" (1/1) ... [2024-05-12 11:04:23,380 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-05-12 11:04:23,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 11:04:23,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 11:04:23,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 11:04:23,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 11:04:23,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:23" (1/1) ... [2024-05-12 11:04:23,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:23" (1/1) ... [2024-05-12 11:04:23,397 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:23" (1/1) ... [2024-05-12 11:04:23,419 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 11:04:23,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:23" (1/1) ... [2024-05-12 11:04:23,419 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:23" (1/1) ... [2024-05-12 11:04:23,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:23" (1/1) ... [2024-05-12 11:04:23,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:23" (1/1) ... [2024-05-12 11:04:23,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:23" (1/1) ... [2024-05-12 11:04:23,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:23" (1/1) ... [2024-05-12 11:04:23,446 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 11:04:23,448 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 11:04:23,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 11:04:23,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 11:04:23,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:23" (1/1) ... [2024-05-12 11:04:23,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:04:23,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:04:23,494 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) [2024-05-12 11:04:23,511 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 [2024-05-12 11:04:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 11:04:23,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 11:04:23,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 11:04:23,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 11:04:23,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 11:04:23,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 11:04:23,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 11:04:23,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 11:04:23,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 11:04:23,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 11:04:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 11:04:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 11:04:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 11:04:23,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 11:04:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 11:04:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 11:04:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 11:04:23,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 11:04:23,524 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 11:04:23,591 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 11:04:23,593 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 11:04:23,809 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 11:04:23,809 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 11:04:23,937 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 11:04:23,938 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 11:04:23,938 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:04:23 BoogieIcfgContainer [2024-05-12 11:04:23,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 11:04:23,940 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 11:04:23,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 11:04:23,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 11:04:23,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 11:04:22" (1/4) ... [2024-05-12 11:04:23,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2de894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 11:04:23, skipping insertion in model container [2024-05-12 11:04:23,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:04:23" (2/4) ... [2024-05-12 11:04:23,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2de894 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 11:04:23, skipping insertion in model container [2024-05-12 11:04:23,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:04:23" (3/4) ... [2024-05-12 11:04:23,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2de894 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 11:04:23, skipping insertion in model container [2024-05-12 11:04:23,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:04:23" (4/4) ... [2024-05-12 11:04:23,945 INFO L112 eAbstractionObserver]: Analyzing ICFG security.wvr.c [2024-05-12 11:04:23,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 11:04:23,965 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-05-12 11:04:23,966 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 11:04:24,001 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-05-12 11:04:24,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 21 transitions, 56 flow [2024-05-12 11:04:24,049 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2024-05-12 11:04:24,059 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-05-12 11:04:24,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 0/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-05-12 11:04:24,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 21 transitions, 56 flow [2024-05-12 11:04:24,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 18 transitions, 48 flow [2024-05-12 11:04:24,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 11:04:24,077 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;@b3b7630, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 11:04:24,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-05-12 11:04:24,082 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 11:04:24,082 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 11:04:24,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 11:04:24,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:24,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 11:04:24,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 11:04:24,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1686297116, now seen corresponding path program 1 times [2024-05-12 11:04:24,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:24,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774099919] [2024-05-12 11:04:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:24,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:04:24,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:24,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774099919] [2024-05-12 11:04:24,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774099919] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:04:24,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:04:24,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 11:04:24,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327978908] [2024-05-12 11:04:24,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:24,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 11:04:24,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:24,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 11:04:24,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 11:04:24,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-05-12 11:04:24,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-05-12 11:04:24,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:24,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-05-12 11:04:24,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:24,669 INFO L124 PetriNetUnfolderBase]: 16/48 cut-off events. [2024-05-12 11:04:24,670 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-05-12 11:04:24,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 48 events. 16/48 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 3 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 74. Up to 39 conditions per place. [2024-05-12 11:04:24,672 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 21 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2024-05-12 11:04:24,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 113 flow [2024-05-12 11:04:24,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 11:04:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 11:04:24,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2024-05-12 11:04:24,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-05-12 11:04:24,684 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 48 flow. Second operand 3 states and 35 transitions. [2024-05-12 11:04:24,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 113 flow [2024-05-12 11:04:24,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 25 transitions, 103 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 11:04:24,688 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 61 flow [2024-05-12 11:04:24,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2024-05-12 11:04:24,692 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2024-05-12 11:04:24,692 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 61 flow [2024-05-12 11:04:24,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-05-12 11:04:24,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:24,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:24,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 11:04:24,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 11:04:24,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash 735603766, now seen corresponding path program 1 times [2024-05-12 11:04:24,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:24,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670335129] [2024-05-12 11:04:24,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:24,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:04:24,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:24,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670335129] [2024-05-12 11:04:24,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670335129] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:04:24,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:04:24,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 11:04:24,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782612597] [2024-05-12 11:04:24,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:24,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 11:04:24,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 11:04:24,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 11:04:24,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-05-12 11:04:24,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2024-05-12 11:04:24,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:24,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-05-12 11:04:24,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:25,061 INFO L124 PetriNetUnfolderBase]: 15/45 cut-off events. [2024-05-12 11:04:25,062 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-05-12 11:04:25,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 45 events. 15/45 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 30. Up to 23 conditions per place. [2024-05-12 11:04:25,064 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 23 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2024-05-12 11:04:25,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 131 flow [2024-05-12 11:04:25,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 11:04:25,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 11:04:25,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2024-05-12 11:04:25,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-05-12 11:04:25,066 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 61 flow. Second operand 4 states and 41 transitions. [2024-05-12 11:04:25,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 131 flow [2024-05-12 11:04:25,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 11:04:25,068 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 66 flow [2024-05-12 11:04:25,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=66, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2024-05-12 11:04:25,071 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2024-05-12 11:04:25,071 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 66 flow [2024-05-12 11:04:25,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2024-05-12 11:04:25,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:25,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:25,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 11:04:25,076 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 11:04:25,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:25,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1433741765, now seen corresponding path program 1 times [2024-05-12 11:04:25,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:25,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587483999] [2024-05-12 11:04:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:25,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:04:25,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:25,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587483999] [2024-05-12 11:04:25,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587483999] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:04:25,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:04:25,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 11:04:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520866818] [2024-05-12 11:04:25,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:25,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 11:04:25,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:25,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 11:04:25,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 11:04:25,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-05-12 11:04:25,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:04:25,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:25,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-05-12 11:04:25,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:25,446 INFO L124 PetriNetUnfolderBase]: 14/43 cut-off events. [2024-05-12 11:04:25,447 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-05-12 11:04:25,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 43 events. 14/43 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 4 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 47. Up to 29 conditions per place. [2024-05-12 11:04:25,447 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 19 selfloop transitions, 7 changer transitions 0/27 dead transitions. [2024-05-12 11:04:25,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 140 flow [2024-05-12 11:04:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 11:04:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 11:04:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2024-05-12 11:04:25,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 11:04:25,449 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 66 flow. Second operand 5 states and 42 transitions. [2024-05-12 11:04:25,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 140 flow [2024-05-12 11:04:25,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 131 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 11:04:25,450 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 89 flow [2024-05-12 11:04:25,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=89, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2024-05-12 11:04:25,451 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2024-05-12 11:04:25,451 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 89 flow [2024-05-12 11:04:25,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:04:25,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:25,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:25,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 11:04:25,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 11:04:25,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:25,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1965053277, now seen corresponding path program 1 times [2024-05-12 11:04:25,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:25,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314386544] [2024-05-12 11:04:25,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:25,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:04:25,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:25,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314386544] [2024-05-12 11:04:25,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314386544] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:04:25,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:04:25,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 11:04:25,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144113167] [2024-05-12 11:04:25,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:25,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 11:04:25,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:25,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 11:04:25,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 11:04:25,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-05-12 11:04:25,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2024-05-12 11:04:25,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:25,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-05-12 11:04:25,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:25,691 INFO L124 PetriNetUnfolderBase]: 14/42 cut-off events. [2024-05-12 11:04:25,692 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-05-12 11:04:25,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 42 events. 14/42 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 1 based on Foata normal form. 1/43 useless extension candidates. Maximal degree in co-relation 101. Up to 21 conditions per place. [2024-05-12 11:04:25,693 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 19 selfloop transitions, 4 changer transitions 0/24 dead transitions. [2024-05-12 11:04:25,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 136 flow [2024-05-12 11:04:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 11:04:25,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 11:04:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 36 transitions. [2024-05-12 11:04:25,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34285714285714286 [2024-05-12 11:04:25,694 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 89 flow. Second operand 5 states and 36 transitions. [2024-05-12 11:04:25,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 136 flow [2024-05-12 11:04:25,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 117 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-05-12 11:04:25,695 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 70 flow [2024-05-12 11:04:25,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2024-05-12 11:04:25,696 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2024-05-12 11:04:25,696 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 70 flow [2024-05-12 11:04:25,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2024-05-12 11:04:25,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:25,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:25,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 11:04:25,697 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 11:04:25,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash -759584355, now seen corresponding path program 1 times [2024-05-12 11:04:25,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:25,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961299307] [2024-05-12 11:04:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:25,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:04:25,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:25,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961299307] [2024-05-12 11:04:25,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961299307] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:04:25,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:04:25,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 11:04:25,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574143483] [2024-05-12 11:04:25,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:25,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 11:04:25,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:25,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 11:04:25,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 11:04:25,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-05-12 11:04:25,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:04:25,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:25,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-05-12 11:04:25,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:25,957 INFO L124 PetriNetUnfolderBase]: 13/47 cut-off events. [2024-05-12 11:04:25,958 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-05-12 11:04:25,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 47 events. 13/47 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 0 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 54. Up to 22 conditions per place. [2024-05-12 11:04:25,959 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 16 selfloop transitions, 3 changer transitions 11/31 dead transitions. [2024-05-12 11:04:25,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 155 flow [2024-05-12 11:04:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 11:04:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 11:04:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-05-12 11:04:25,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-05-12 11:04:25,965 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 70 flow. Second operand 5 states and 55 transitions. [2024-05-12 11:04:25,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 155 flow [2024-05-12 11:04:25,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 149 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 11:04:25,967 INFO L231 Difference]: Finished difference. Result has 30 places, 16 transitions, 55 flow [2024-05-12 11:04:25,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=55, PETRI_PLACES=30, PETRI_TRANSITIONS=16} [2024-05-12 11:04:25,969 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2024-05-12 11:04:25,969 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 16 transitions, 55 flow [2024-05-12 11:04:25,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:04:25,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:04:25,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:04:25,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 11:04:25,970 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 11:04:25,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:04:25,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2103605903, now seen corresponding path program 2 times [2024-05-12 11:04:25,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:04:25,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298684533] [2024-05-12 11:04:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:04:25,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:04:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:04:26,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:04:26,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:04:26,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298684533] [2024-05-12 11:04:26,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298684533] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:04:26,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:04:26,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 11:04:26,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579611168] [2024-05-12 11:04:26,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:04:26,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 11:04:26,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:04:26,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 11:04:26,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 11:04:26,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-05-12 11:04:26,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 16 transitions, 55 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) [2024-05-12 11:04:26,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:04:26,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-05-12 11:04:26,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:04:26,202 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-05-12 11:04:26,203 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-05-12 11:04:26,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 22 events. 4/22 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 63. Up to 9 conditions per place. [2024-05-12 11:04:26,203 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2024-05-12 11:04:26,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 93 flow [2024-05-12 11:04:26,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 11:04:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 11:04:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 44 transitions. [2024-05-12 11:04:26,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-05-12 11:04:26,205 INFO L175 Difference]: Start difference. First operand has 30 places, 16 transitions, 55 flow. Second operand 5 states and 44 transitions. [2024-05-12 11:04:26,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 93 flow [2024-05-12 11:04:26,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 76 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 11:04:26,206 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2024-05-12 11:04:26,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2024-05-12 11:04:26,208 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2024-05-12 11:04:26,208 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2024-05-12 11:04:26,209 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) [2024-05-12 11:04:26,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-05-12 11:04:26,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-05-12 11:04:26,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-05-12 11:04:26,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-05-12 11:04:26,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-05-12 11:04:26,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 11:04:26,214 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-05-12 11:04:26,217 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 11:04:26,217 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 11:04:26,220 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 11:04:26,220 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 11:04:26,221 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 11:04:26 BasicIcfg [2024-05-12 11:04:26,221 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 11:04:26,221 INFO L158 Benchmark]: Toolchain (without parser) took 3189.88ms. Allocated memory was 216.0MB in the beginning and 276.8MB in the end (delta: 60.8MB). Free memory was 144.8MB in the beginning and 177.6MB in the end (delta: -32.9MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2024-05-12 11:04:26,223 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 90.1MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 11:04:26,223 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 216.0MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 11:04:26,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.10ms. Allocated memory is still 216.0MB. Free memory was 144.5MB in the beginning and 130.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-05-12 11:04:26,228 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.09ms. Allocated memory is still 216.0MB. Free memory was 130.3MB in the beginning and 128.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 11:04:26,228 INFO L158 Benchmark]: Boogie Preprocessor took 65.53ms. Allocated memory is still 216.0MB. Free memory was 128.6MB in the beginning and 126.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 11:04:26,229 INFO L158 Benchmark]: RCFGBuilder took 490.45ms. Allocated memory is still 216.0MB. Free memory was 126.5MB in the beginning and 170.3MB in the end (delta: -43.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-05-12 11:04:26,229 INFO L158 Benchmark]: TraceAbstraction took 2280.97ms. Allocated memory was 216.0MB in the beginning and 276.8MB in the end (delta: 60.8MB). Free memory was 169.1MB in the beginning and 177.6MB in the end (delta: -8.5MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. [2024-05-12 11:04:26,230 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 90.1MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 216.0MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.10ms. Allocated memory is still 216.0MB. Free memory was 144.5MB in the beginning and 130.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.09ms. Allocated memory is still 216.0MB. Free memory was 130.3MB in the beginning and 128.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.53ms. Allocated memory is still 216.0MB. Free memory was 128.6MB in the beginning and 126.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 490.45ms. Allocated memory is still 216.0MB. Free memory was 126.5MB in the beginning and 170.3MB in the end (delta: -43.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2280.97ms. Allocated memory was 216.0MB in the beginning and 276.8MB in the end (delta: 60.8MB). Free memory was 169.1MB in the beginning and 177.6MB in the end (delta: -8.5MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 71]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 72]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 76]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 28 locations, 5 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: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 94 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 88 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 240 IncrementalHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 5 mSDtfsCounter, 240 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=3, InterpolantAutomatonStates: 27, 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, 1.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 500 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 11:04:26,271 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