./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_29-multiple-protecting2-vesal_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_29-multiple-protecting2-vesal_true.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-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:05:33,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:05:33,668 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:05:33,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:05:33,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:05:33,699 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:05:33,700 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:05:33,700 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:05:33,701 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:05:33,705 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:05:33,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:05:33,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:05:33,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:05:33,707 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:05:33,707 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:05:33,707 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:05:33,708 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:05:33,708 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:05:33,708 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:05:33,708 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:05:33,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:05:33,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:05:33,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:05:33,709 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:05:33,709 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:05:33,710 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:05:33,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:05:33,710 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:05:33,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:05:33,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:05:33,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:05:33,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:05:33,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:05:33,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:05:33,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:05:33,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:05:33,713 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:05:33,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:05:33,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:05:33,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:05:33,713 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:05:33,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:05:33,714 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:05:33,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:05:33,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:05:33,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:05:33,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:05:33,953 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:05:33,953 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:05:33,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2024-06-28 01:05:34,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:05:35,202 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:05:35,202 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i [2024-06-28 01:05:35,213 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b175d76c0/8d21e69c43b84935804e97f3f00a05f2/FLAG8ab95e11e [2024-06-28 01:05:35,222 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b175d76c0/8d21e69c43b84935804e97f3f00a05f2 [2024-06-28 01:05:35,224 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:05:35,225 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:05:35,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_29-multiple-protecting2-vesal_true.yml/witness.yml [2024-06-28 01:05:35,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:05:35,310 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:05:35,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:05:35,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:05:35,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:05:35,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:05:35" (1/2) ... [2024-06-28 01:05:35,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccd9701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:05:35, skipping insertion in model container [2024-06-28 01:05:35,318 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:05:35" (1/2) ... [2024-06-28 01:05:35,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7a927233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:05:35, skipping insertion in model container [2024-06-28 01:05:35,320 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:05:35" (2/2) ... [2024-06-28 01:05:35,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccd9701 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:35, skipping insertion in model container [2024-06-28 01:05:35,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:05:35" (2/2) ... [2024-06-28 01:05:35,320 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:05:35,362 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:05:35,363 INFO L97 edCorrectnessWitness]: Location invariant before [L699-L699] ((! multithreaded || (__global_lock_locked || (g2 == 0 || g2 == 1))) && (! multithreaded || (g2 == 0 || g2 == 1))) && (! multithreaded || (mutex2_locked || g2 == 0)) [2024-06-28 01:05:35,363 INFO L103 edCorrectnessWitness]: ghost_variable __global_lock_locked = 0 [2024-06-28 01:05:35,363 INFO L103 edCorrectnessWitness]: ghost_variable mutex2_locked = 0 [2024-06-28 01:05:35,363 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:05:35,363 INFO L103 edCorrectnessWitness]: ghost_variable mutex1_locked = 0 [2024-06-28 01:05:35,363 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] mutex2_locked = 1; [2024-06-28 01:05:35,364 INFO L106 edCorrectnessWitness]: ghost_update [L705-L705] __global_lock_locked = 1; [2024-06-28 01:05:35,364 INFO L106 edCorrectnessWitness]: ghost_update [L708-L708] mutex2_locked = 0; [2024-06-28 01:05:35,364 INFO L106 edCorrectnessWitness]: ghost_update [L709-L709] mutex1_locked = 0; [2024-06-28 01:05:35,364 INFO L106 edCorrectnessWitness]: ghost_update [L707-L707] __global_lock_locked = 0; [2024-06-28 01:05:35,364 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] multithreaded = 1; [2024-06-28 01:05:35,364 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] __global_lock_locked = 0; [2024-06-28 01:05:35,364 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] __global_lock_locked = 1; [2024-06-28 01:05:35,364 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] __global_lock_locked = 0; [2024-06-28 01:05:35,365 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] __global_lock_locked = 1; [2024-06-28 01:05:35,365 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] __global_lock_locked = 1; [2024-06-28 01:05:35,365 INFO L106 edCorrectnessWitness]: ghost_update [L703-L703] __global_lock_locked = 0; [2024-06-28 01:05:35,365 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] mutex2_locked = 0; [2024-06-28 01:05:35,365 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] mutex2_locked = 1; [2024-06-28 01:05:35,365 INFO L106 edCorrectnessWitness]: ghost_update [L699-L699] mutex1_locked = 1; [2024-06-28 01:05:35,402 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:05:35,515 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] [2024-06-28 01:05:35,621 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:05:35,630 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:05:35,666 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_29-multiple-protecting2-vesal_true.i[1103,1116] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:05:35,703 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:05:35,739 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:05:35,739 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:35 WrapperNode [2024-06-28 01:05:35,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:05:35,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:05:35,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:05:35,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:05:35,745 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 28.06 01:05:35" (1/1) ... [2024-06-28 01:05:35,753 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 28.06 01:05:35" (1/1) ... [2024-06-28 01:05:35,768 INFO L138 Inliner]: procedures = 162, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2024-06-28 01:05:35,768 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:05:35,769 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:05:35,769 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:05:35,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:05:35,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:35" (1/1) ... [2024-06-28 01:05:35,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:35" (1/1) ... [2024-06-28 01:05:35,784 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:35" (1/1) ... [2024-06-28 01:05:35,794 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 5, 5, 5]. 29 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-06-28 01:05:35,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:35" (1/1) ... [2024-06-28 01:05:35,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:35" (1/1) ... [2024-06-28 01:05:35,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:35" (1/1) ... [2024-06-28 01:05:35,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:35" (1/1) ... [2024-06-28 01:05:35,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:35" (1/1) ... [2024-06-28 01:05:35,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:35" (1/1) ... [2024-06-28 01:05:35,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:05:35,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:05:35,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:05:35,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:05:35,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:35" (1/1) ... [2024-06-28 01:05:35,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:05:35,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:05:35,843 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) [2024-06-28 01:05:35,851 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 [2024-06-28 01:05:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-06-28 01:05:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-06-28 01:05:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-28 01:05:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:05:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:05:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:05:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-28 01:05:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-28 01:05:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-28 01:05:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:05:35,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:05:35,878 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:05:35,969 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:05:35,971 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:05:36,131 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:05:36,131 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:05:36,263 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:05:36,263 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:05:36,263 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:05:36 BoogieIcfgContainer [2024-06-28 01:05:36,263 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:05:36,265 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:05:36,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:05:36,268 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:05:36,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:05:35" (1/4) ... [2024-06-28 01:05:36,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a1ab78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:05:36, skipping insertion in model container [2024-06-28 01:05:36,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:05:35" (2/4) ... [2024-06-28 01:05:36,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a1ab78 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:05:36, skipping insertion in model container [2024-06-28 01:05:36,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:35" (3/4) ... [2024-06-28 01:05:36,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a1ab78 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:05:36, skipping insertion in model container [2024-06-28 01:05:36,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:05:36" (4/4) ... [2024-06-28 01:05:36,275 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_29-multiple-protecting2-vesal_true.i [2024-06-28 01:05:36,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:05:36,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:05:36,291 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:05:36,319 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-06-28 01:05:36,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 113 flow [2024-06-28 01:05:36,370 INFO L124 PetriNetUnfolderBase]: 3/52 cut-off events. [2024-06-28 01:05:36,371 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-28 01:05:36,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 52 events. 3/52 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-28 01:05:36,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 113 flow [2024-06-28 01:05:36,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 41 transitions, 85 flow [2024-06-28 01:05:36,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:05:36,387 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;@770c262f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:05:36,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-28 01:05:36,402 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:05:36,403 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:05:36,403 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:05:36,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:36,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:05:36,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:05:36,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:36,411 INFO L85 PathProgramCache]: Analyzing trace with hash 293757406, now seen corresponding path program 1 times [2024-06-28 01:05:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:36,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873927543] [2024-06-28 01:05:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:36,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:36,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873927543] [2024-06-28 01:05:36,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873927543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:36,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:36,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:05:36,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476916342] [2024-06-28 01:05:36,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:36,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:05:36,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:36,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:05:36,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:05:36,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-06-28 01:05:36,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-06-28 01:05:36,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:36,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-06-28 01:05:36,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:36,804 INFO L124 PetriNetUnfolderBase]: 96/276 cut-off events. [2024-06-28 01:05:36,804 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-28 01:05:36,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 276 events. 96/276 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1244 event pairs, 26 based on Foata normal form. 23/290 useless extension candidates. Maximal degree in co-relation 485. Up to 161 conditions per place. [2024-06-28 01:05:36,808 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 30 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-06-28 01:05:36,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 165 flow [2024-06-28 01:05:36,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:05:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:05:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-28 01:05:36,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6477987421383647 [2024-06-28 01:05:36,821 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 85 flow. Second operand 3 states and 103 transitions. [2024-06-28 01:05:36,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 165 flow [2024-06-28 01:05:36,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:05:36,828 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 88 flow [2024-06-28 01:05:36,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-06-28 01:05:36,833 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-06-28 01:05:36,833 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 88 flow [2024-06-28 01:05:36,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-06-28 01:05:36,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:36,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:36,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:05:36,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:05:36,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1687957583, now seen corresponding path program 1 times [2024-06-28 01:05:36,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:36,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37825076] [2024-06-28 01:05:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:36,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:37,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:37,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37825076] [2024-06-28 01:05:37,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37825076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:37,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:37,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:05:37,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321557444] [2024-06-28 01:05:37,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:37,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:05:37,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:37,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:05:37,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:05:37,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-06-28 01:05:37,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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) [2024-06-28 01:05:37,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:37,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-06-28 01:05:37,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:37,255 INFO L124 PetriNetUnfolderBase]: 105/311 cut-off events. [2024-06-28 01:05:37,256 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-06-28 01:05:37,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 311 events. 105/311 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1427 event pairs, 11 based on Foata normal form. 7/315 useless extension candidates. Maximal degree in co-relation 571. Up to 60 conditions per place. [2024-06-28 01:05:37,260 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 62 selfloop transitions, 9 changer transitions 0/87 dead transitions. [2024-06-28 01:05:37,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 87 transitions, 324 flow [2024-06-28 01:05:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:05:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:05:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-06-28 01:05:37,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5956873315363881 [2024-06-28 01:05:37,271 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 88 flow. Second operand 7 states and 221 transitions. [2024-06-28 01:05:37,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 87 transitions, 324 flow [2024-06-28 01:05:37,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 87 transitions, 318 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:05:37,274 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 131 flow [2024-06-28 01:05:37,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2024-06-28 01:05:37,275 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-06-28 01:05:37,275 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 131 flow [2024-06-28 01:05:37,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 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) [2024-06-28 01:05:37,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:37,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:37,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:05:37,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:05:37,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:37,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1873706974, now seen corresponding path program 1 times [2024-06-28 01:05:37,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:37,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066463891] [2024-06-28 01:05:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:37,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:37,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:37,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066463891] [2024-06-28 01:05:37,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066463891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:37,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:37,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:05:37,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274435039] [2024-06-28 01:05:37,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:37,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:05:37,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:37,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:05:37,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:05:37,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-28 01:05:37,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-06-28 01:05:37,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:37,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-28 01:05:37,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:37,458 INFO L124 PetriNetUnfolderBase]: 155/420 cut-off events. [2024-06-28 01:05:37,459 INFO L125 PetriNetUnfolderBase]: For 122/124 co-relation queries the response was YES. [2024-06-28 01:05:37,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 420 events. 155/420 cut-off events. For 122/124 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2019 event pairs, 66 based on Foata normal form. 2/405 useless extension candidates. Maximal degree in co-relation 898. Up to 149 conditions per place. [2024-06-28 01:05:37,462 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 44 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2024-06-28 01:05:37,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 302 flow [2024-06-28 01:05:37,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:05:37,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:05:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-06-28 01:05:37,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169811320754717 [2024-06-28 01:05:37,464 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 131 flow. Second operand 5 states and 137 transitions. [2024-06-28 01:05:37,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 302 flow [2024-06-28 01:05:37,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:05:37,468 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 201 flow [2024-06-28 01:05:37,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-06-28 01:05:37,469 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-28 01:05:37,469 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 201 flow [2024-06-28 01:05:37,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-06-28 01:05:37,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:37,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:37,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:05:37,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:05:37,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:37,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1041048810, now seen corresponding path program 1 times [2024-06-28 01:05:37,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:37,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722590838] [2024-06-28 01:05:37,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:37,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:37,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:37,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722590838] [2024-06-28 01:05:37,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722590838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:37,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:37,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:05:37,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529822223] [2024-06-28 01:05:37,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:37,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:05:37,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:37,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:05:37,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:05:37,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-28 01:05:37,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-06-28 01:05:37,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:37,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-28 01:05:37,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:37,661 INFO L124 PetriNetUnfolderBase]: 158/428 cut-off events. [2024-06-28 01:05:37,662 INFO L125 PetriNetUnfolderBase]: For 274/276 co-relation queries the response was YES. [2024-06-28 01:05:37,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 428 events. 158/428 cut-off events. For 274/276 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2088 event pairs, 54 based on Foata normal form. 12/438 useless extension candidates. Maximal degree in co-relation 1067. Up to 243 conditions per place. [2024-06-28 01:05:37,665 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 50 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2024-06-28 01:05:37,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 426 flow [2024-06-28 01:05:37,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:05:37,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:05:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-06-28 01:05:37,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132075471698113 [2024-06-28 01:05:37,666 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 201 flow. Second operand 5 states and 136 transitions. [2024-06-28 01:05:37,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 426 flow [2024-06-28 01:05:37,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 426 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 01:05:37,673 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 292 flow [2024-06-28 01:05:37,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-06-28 01:05:37,674 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-06-28 01:05:37,674 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 292 flow [2024-06-28 01:05:37,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-06-28 01:05:37,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:37,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:37,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:05:37,675 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:05:37,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:37,676 INFO L85 PathProgramCache]: Analyzing trace with hash -640393853, now seen corresponding path program 1 times [2024-06-28 01:05:37,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:37,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995494339] [2024-06-28 01:05:37,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:37,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:37,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:37,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995494339] [2024-06-28 01:05:37,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995494339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:37,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:37,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:05:37,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479052209] [2024-06-28 01:05:37,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:37,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:05:37,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:37,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:05:37,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:05:37,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-28 01:05:37,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-06-28 01:05:37,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:37,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-28 01:05:37,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:37,882 INFO L124 PetriNetUnfolderBase]: 154/423 cut-off events. [2024-06-28 01:05:37,882 INFO L125 PetriNetUnfolderBase]: For 466/468 co-relation queries the response was YES. [2024-06-28 01:05:37,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 423 events. 154/423 cut-off events. For 466/468 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2003 event pairs, 56 based on Foata normal form. 19/440 useless extension candidates. Maximal degree in co-relation 1189. Up to 213 conditions per place. [2024-06-28 01:05:37,884 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 52 selfloop transitions, 10 changer transitions 2/75 dead transitions. [2024-06-28 01:05:37,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 75 transitions, 498 flow [2024-06-28 01:05:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:05:37,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:05:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 01:05:37,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2024-06-28 01:05:37,885 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 292 flow. Second operand 6 states and 146 transitions. [2024-06-28 01:05:37,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 75 transitions, 498 flow [2024-06-28 01:05:37,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 493 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 01:05:37,889 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 350 flow [2024-06-28 01:05:37,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2024-06-28 01:05:37,890 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-06-28 01:05:37,891 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 350 flow [2024-06-28 01:05:37,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-06-28 01:05:37,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:37,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:37,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:05:37,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:05:37,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:37,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1878134059, now seen corresponding path program 1 times [2024-06-28 01:05:37,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:37,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002400950] [2024-06-28 01:05:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:37,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:37,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:37,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002400950] [2024-06-28 01:05:37,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002400950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:37,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:37,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:05:37,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11345192] [2024-06-28 01:05:37,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:37,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:05:37,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:37,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:05:37,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:05:37,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-28 01:05:37,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 350 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-06-28 01:05:37,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:37,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-28 01:05:37,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:38,068 INFO L124 PetriNetUnfolderBase]: 149/394 cut-off events. [2024-06-28 01:05:38,068 INFO L125 PetriNetUnfolderBase]: For 784/786 co-relation queries the response was YES. [2024-06-28 01:05:38,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 394 events. 149/394 cut-off events. For 784/786 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1813 event pairs, 30 based on Foata normal form. 6/398 useless extension candidates. Maximal degree in co-relation 1243. Up to 126 conditions per place. [2024-06-28 01:05:38,070 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 51 selfloop transitions, 18 changer transitions 0/79 dead transitions. [2024-06-28 01:05:38,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 79 transitions, 570 flow [2024-06-28 01:05:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:05:38,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:05:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:05:38,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44339622641509435 [2024-06-28 01:05:38,072 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 350 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:05:38,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 79 transitions, 570 flow [2024-06-28 01:05:38,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 534 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:05:38,077 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 358 flow [2024-06-28 01:05:38,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=358, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-06-28 01:05:38,079 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-06-28 01:05:38,079 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 358 flow [2024-06-28 01:05:38,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-06-28 01:05:38,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:38,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:38,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:05:38,080 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:05:38,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:38,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1067615418, now seen corresponding path program 1 times [2024-06-28 01:05:38,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:38,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505755995] [2024-06-28 01:05:38,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:38,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:38,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:38,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505755995] [2024-06-28 01:05:38,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505755995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:38,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:38,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:05:38,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185483459] [2024-06-28 01:05:38,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:38,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:05:38,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:38,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:05:38,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:05:38,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-06-28 01:05:38,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 358 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-06-28 01:05:38,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:38,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-06-28 01:05:38,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:38,266 INFO L124 PetriNetUnfolderBase]: 75/234 cut-off events. [2024-06-28 01:05:38,267 INFO L125 PetriNetUnfolderBase]: For 678/685 co-relation queries the response was YES. [2024-06-28 01:05:38,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 234 events. 75/234 cut-off events. For 678/685 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 958 event pairs, 13 based on Foata normal form. 9/241 useless extension candidates. Maximal degree in co-relation 758. Up to 133 conditions per place. [2024-06-28 01:05:38,268 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 38 selfloop transitions, 4 changer transitions 1/62 dead transitions. [2024-06-28 01:05:38,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 483 flow [2024-06-28 01:05:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:05:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:05:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-28 01:05:38,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801886792452831 [2024-06-28 01:05:38,270 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 358 flow. Second operand 4 states and 123 transitions. [2024-06-28 01:05:38,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 483 flow [2024-06-28 01:05:38,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 402 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 01:05:38,272 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 264 flow [2024-06-28 01:05:38,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-06-28 01:05:38,273 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-06-28 01:05:38,273 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 264 flow [2024-06-28 01:05:38,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-06-28 01:05:38,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:38,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:38,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:05:38,274 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:05:38,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:38,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1003087541, now seen corresponding path program 1 times [2024-06-28 01:05:38,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:38,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938665284] [2024-06-28 01:05:38,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:38,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:38,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:38,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:38,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938665284] [2024-06-28 01:05:38,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938665284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:38,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:38,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:05:38,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271434342] [2024-06-28 01:05:38,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:38,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:05:38,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:38,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:05:38,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:05:38,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-06-28 01:05:38,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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) [2024-06-28 01:05:38,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:38,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-06-28 01:05:38,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:38,408 INFO L124 PetriNetUnfolderBase]: 38/146 cut-off events. [2024-06-28 01:05:38,409 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-06-28 01:05:38,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 146 events. 38/146 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 432 event pairs, 12 based on Foata normal form. 12/154 useless extension candidates. Maximal degree in co-relation 399. Up to 66 conditions per place. [2024-06-28 01:05:38,409 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 24 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2024-06-28 01:05:38,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 49 transitions, 302 flow [2024-06-28 01:05:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:05:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:05:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-06-28 01:05:38,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5707547169811321 [2024-06-28 01:05:38,411 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 264 flow. Second operand 4 states and 121 transitions. [2024-06-28 01:05:38,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 49 transitions, 302 flow [2024-06-28 01:05:38,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 270 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:05:38,412 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 209 flow [2024-06-28 01:05:38,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-06-28 01:05:38,413 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-28 01:05:38,413 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 209 flow [2024-06-28 01:05:38,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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) [2024-06-28 01:05:38,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:38,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:38,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:05:38,414 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:05:38,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1597413803, now seen corresponding path program 2 times [2024-06-28 01:05:38,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:38,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201450067] [2024-06-28 01:05:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:38,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:38,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:38,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201450067] [2024-06-28 01:05:38,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201450067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:38,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:38,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:05:38,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032298046] [2024-06-28 01:05:38,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:38,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:05:38,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:38,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:05:38,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:05:38,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-28 01:05:38,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-06-28 01:05:38,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:38,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-28 01:05:38,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:38,613 INFO L124 PetriNetUnfolderBase]: 44/148 cut-off events. [2024-06-28 01:05:38,613 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-06-28 01:05:38,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 148 events. 44/148 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 448 event pairs, 21 based on Foata normal form. 2/148 useless extension candidates. Maximal degree in co-relation 417. Up to 67 conditions per place. [2024-06-28 01:05:38,614 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2024-06-28 01:05:38,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 306 flow [2024-06-28 01:05:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:05:38,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:05:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 01:05:38,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41509433962264153 [2024-06-28 01:05:38,615 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 209 flow. Second operand 6 states and 132 transitions. [2024-06-28 01:05:38,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 306 flow [2024-06-28 01:05:38,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 49 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:05:38,616 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2024-06-28 01:05:38,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2024-06-28 01:05:38,617 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-06-28 01:05:38,618 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2024-06-28 01:05:38,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-06-28 01:05:38,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-06-28 01:05:38,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-06-28 01:05:38,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-06-28 01:05:38,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-06-28 01:05:38,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-06-28 01:05:38,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:05:38,622 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:38,625 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 01:05:38,625 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 01:05:38,629 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-06-28 01:05:38,629 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-06-28 01:05:38,630 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 01:05:38 BasicIcfg [2024-06-28 01:05:38,630 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 01:05:38,631 INFO L158 Benchmark]: Toolchain (without parser) took 3321.17ms. Allocated memory was 142.6MB in the beginning and 205.5MB in the end (delta: 62.9MB). Free memory was 110.8MB in the beginning and 117.8MB in the end (delta: -7.0MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. [2024-06-28 01:05:38,631 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:05:38,631 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:05:38,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.06ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 83.3MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-06-28 01:05:38,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.61ms. Allocated memory is still 142.6MB. Free memory was 83.3MB in the beginning and 80.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:05:38,631 INFO L158 Benchmark]: Boogie Preprocessor took 39.19ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 78.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:05:38,633 INFO L158 Benchmark]: RCFGBuilder took 454.99ms. Allocated memory is still 142.6MB. Free memory was 78.8MB in the beginning and 111.3MB in the end (delta: -32.5MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2024-06-28 01:05:38,633 INFO L158 Benchmark]: TraceAbstraction took 2364.90ms. Allocated memory was 142.6MB in the beginning and 205.5MB in the end (delta: 62.9MB). Free memory was 110.1MB in the beginning and 117.8MB in the end (delta: -7.7MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. [2024-06-28 01:05:38,634 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 429.06ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 83.3MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.61ms. Allocated memory is still 142.6MB. Free memory was 83.3MB in the beginning and 80.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.19ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 78.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 454.99ms. Allocated memory is still 142.6MB. Free memory was 78.8MB in the beginning and 111.3MB in the end (delta: -32.5MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2364.90ms. Allocated memory was 142.6MB in the beginning and 205.5MB in the end (delta: 62.9MB). Free memory was 110.1MB in the beginning and 117.8MB in the end (delta: -7.7MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 699]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 3 procedures, 66 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: 2.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 360 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 322 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 776 IncrementalHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 13 mSDtfsCounter, 776 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=6, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 726 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 01:05:38,658 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