./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/13-privatized_27-multiple-protecting2_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i ./goblint.2024-05-07_14-17-48.files/protection/13-privatized_27-multiple-protecting2_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-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:52:25,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:52:25,975 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:52:25,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:52:25,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:52:25,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:52:25,996 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:52:25,996 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:52:25,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:52:25,997 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:52:25,997 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:52:25,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:52:25,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:52:25,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:52:25,998 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:52:25,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:52:25,999 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:52:25,999 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:52:25,999 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:52:26,000 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:52:26,000 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:52:26,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:52:26,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:52:26,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:52:26,001 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:52:26,002 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:52:26,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:52:26,002 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:52:26,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:52:26,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:52:26,003 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:52:26,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:52:26,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:52:26,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:52:26,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:52:26,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:52:26,005 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:52:26,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:52:26,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:52:26,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:52:26,006 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:52:26,006 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:52:26,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:52:26,006 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:52:26,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:52:26,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:52:26,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:52:26,236 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:52:26,236 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:52:26,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-05-12 12:52:27,237 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:52:27,811 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:52:27,813 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-05-12 12:52:27,823 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a791ca076/10b189cd6f994033bd18f74a77e9f11a/FLAG386da184c [2024-05-12 12:52:27,840 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a791ca076/10b189cd6f994033bd18f74a77e9f11a [2024-05-12 12:52:27,842 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:52:27,844 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:52:27,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/13-privatized_27-multiple-protecting2_true.yml/witness.yml [2024-05-12 12:52:27,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:52:27,931 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:52:27,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:52:27,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:52:27,935 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:52:27,935 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:52:27" (1/2) ... [2024-05-12 12:52:27,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210b23a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27, skipping insertion in model container [2024-05-12 12:52:27,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:52:27" (1/2) ... [2024-05-12 12:52:27,937 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@774b4df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:27, skipping insertion in model container [2024-05-12 12:52:27,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:52:27" (2/2) ... [2024-05-12 12:52:27,937 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210b23a0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:27, skipping insertion in model container [2024-05-12 12:52:27,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:52:27" (2/2) ... [2024-05-12 12:52:27,938 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:52:27,994 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:52:27,995 INFO L97 edCorrectnessWitness]: Location invariant before [L712-L712] (! multithreaded || 0 <= g2) && (! multithreaded || 0 <= g1) [2024-05-12 12:52:27,995 INFO L97 edCorrectnessWitness]: Location invariant before [L711-L711] (! multithreaded || 0 <= g2) && (! multithreaded || 0 <= g1) [2024-05-12 12:52:27,995 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:52:27,996 INFO L103 edCorrectnessWitness]: ghost_variable mutex2_locked = 0 [2024-05-12 12:52:27,996 INFO L103 edCorrectnessWitness]: ghost_variable mutex1_locked = 0 [2024-05-12 12:52:27,996 INFO L103 edCorrectnessWitness]: ghost_variable __global_lock_locked = 0 [2024-05-12 12:52:27,996 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] __global_lock_locked = 0; [2024-05-12 12:52:27,997 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] __global_lock_locked = 1; [2024-05-12 12:52:27,997 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] __global_lock_locked = 0; [2024-05-12 12:52:27,997 INFO L106 edCorrectnessWitness]: ghost_update [L717-L717] __global_lock_locked = 1; [2024-05-12 12:52:27,997 INFO L106 edCorrectnessWitness]: ghost_update [L726-L726] __global_lock_locked = 0; [2024-05-12 12:52:27,997 INFO L106 edCorrectnessWitness]: ghost_update [L716-L716] mutex2_locked = 1; [2024-05-12 12:52:27,997 INFO L106 edCorrectnessWitness]: ghost_update [L701-L701] __global_lock_locked = 1; [2024-05-12 12:52:27,997 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] mutex1_locked = 0; [2024-05-12 12:52:27,998 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] __global_lock_locked = 1; [2024-05-12 12:52:27,998 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] __global_lock_locked = 0; [2024-05-12 12:52:27,998 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] mutex1_locked = 0; [2024-05-12 12:52:27,998 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] mutex1_locked = 1; [2024-05-12 12:52:27,998 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] __global_lock_locked = 1; [2024-05-12 12:52:27,998 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] __global_lock_locked = 1; [2024-05-12 12:52:27,998 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] mutex2_locked = 0; [2024-05-12 12:52:27,999 INFO L106 edCorrectnessWitness]: ghost_update [L723-L723] mutex2_locked = 0; [2024-05-12 12:52:27,999 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] __global_lock_locked = 0; [2024-05-12 12:52:27,999 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] __global_lock_locked = 0; [2024-05-12 12:52:27,999 INFO L106 edCorrectnessWitness]: ghost_update [L724-L724] __global_lock_locked = 1; [2024-05-12 12:52:28,000 INFO L106 edCorrectnessWitness]: ghost_update [L722-L722] __global_lock_locked = 0; [2024-05-12 12:52:28,000 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] __global_lock_locked = 1; [2024-05-12 12:52:28,000 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] mutex2_locked = 1; [2024-05-12 12:52:28,000 INFO L106 edCorrectnessWitness]: ghost_update [L712-L712] mutex1_locked = 1; [2024-05-12 12:52:28,000 INFO L106 edCorrectnessWitness]: ghost_update [L710-L710] multithreaded = 1; [2024-05-12 12:52:28,000 INFO L106 edCorrectnessWitness]: ghost_update [L703-L703] __global_lock_locked = 0; [2024-05-12 12:52:28,043 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:52:28,197 WARN L246 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_27-multiple-protecting2_true.i[1097,1110] [2024-05-12 12:52:28,350 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:52:28,362 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:52:28,424 WARN L246 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_27-multiple-protecting2_true.i[1097,1110] 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 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 [2024-05-12 12:52:28,501 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:52:28,536 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:52:28,540 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28 WrapperNode [2024-05-12 12:52:28,541 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:52:28,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:52:28,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:52:28,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:52:28,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28" (1/1) ... [2024-05-12 12:52:28,574 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28" (1/1) ... [2024-05-12 12:52:28,600 INFO L138 Inliner]: procedures = 164, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 141 [2024-05-12 12:52:28,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:52:28,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:52:28,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:52:28,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:52:28,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28" (1/1) ... [2024-05-12 12:52:28,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28" (1/1) ... [2024-05-12 12:52:28,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28" (1/1) ... [2024-05-12 12:52:28,639 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 5, 5, 5, 2, 2]. 24 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0, 0]. The 2 writes are split as follows [0, 0, 0, 0, 1, 1]. [2024-05-12 12:52:28,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28" (1/1) ... [2024-05-12 12:52:28,644 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28" (1/1) ... [2024-05-12 12:52:28,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28" (1/1) ... [2024-05-12 12:52:28,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28" (1/1) ... [2024-05-12 12:52:28,651 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28" (1/1) ... [2024-05-12 12:52:28,652 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28" (1/1) ... [2024-05-12 12:52:28,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:52:28,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:52:28,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:52:28,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:52:28,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28" (1/1) ... [2024-05-12 12:52:28,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:52:28,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:52:28,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-05-12 12:52:28,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-05-12 12:52:28,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 12:52:28,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 12:52:28,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 12:52:28,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 12:52:28,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 12:52:28,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-05-12 12:52:28,721 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-05-12 12:52:28,722 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-05-12 12:52:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:52:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:52:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:52:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 12:52:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 12:52:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-05-12 12:52:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-12 12:52:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:52:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:52:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-05-12 12:52:28,723 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-05-12 12:52:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:52:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:52:28,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:52:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:52:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 12:52:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 12:52:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-05-12 12:52:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-12 12:52:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:52:28,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:52:28,726 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:52:28,869 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:52:28,871 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:52:29,174 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:52:29,174 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:52:29,337 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:52:29,337 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 12:52:29,337 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:52:29 BoogieIcfgContainer [2024-05-12 12:52:29,337 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:52:29,340 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:52:29,340 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:52:29,343 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:52:29,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:52:27" (1/4) ... [2024-05-12 12:52:29,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dd3021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:52:29, skipping insertion in model container [2024-05-12 12:52:29,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:52:27" (2/4) ... [2024-05-12 12:52:29,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dd3021 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:52:29, skipping insertion in model container [2024-05-12 12:52:29,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:28" (3/4) ... [2024-05-12 12:52:29,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dd3021 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:52:29, skipping insertion in model container [2024-05-12 12:52:29,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:52:29" (4/4) ... [2024-05-12 12:52:29,347 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2024-05-12 12:52:29,360 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:52:29,361 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 12:52:29,361 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:52:29,390 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-05-12 12:52:29,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 87 transitions, 188 flow [2024-05-12 12:52:29,449 INFO L124 PetriNetUnfolderBase]: 4/85 cut-off events. [2024-05-12 12:52:29,450 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-05-12 12:52:29,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 4/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2024-05-12 12:52:29,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 87 transitions, 188 flow [2024-05-12 12:52:29,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 74 transitions, 154 flow [2024-05-12 12:52:29,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:52:29,467 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;@4d709095, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:52:29,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-05-12 12:52:29,470 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:52:29,470 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 12:52:29,470 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:52:29,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:29,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:52:29,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:29,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash 476969770, now seen corresponding path program 1 times [2024-05-12 12:52:29,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:29,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897310275] [2024-05-12 12:52:29,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:29,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:29,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:29,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897310275] [2024-05-12 12:52:29,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897310275] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:29,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:29,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:52:29,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121375253] [2024-05-12 12:52:29,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:29,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:52:29,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:29,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:52:29,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:52:29,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:29,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:29,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:29,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:29,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:30,380 INFO L124 PetriNetUnfolderBase]: 3516/6198 cut-off events. [2024-05-12 12:52:30,380 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-05-12 12:52:30,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11771 conditions, 6198 events. 3516/6198 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 41386 event pairs, 1157 based on Foata normal form. 306/6430 useless extension candidates. Maximal degree in co-relation 11757. Up to 5139 conditions per place. [2024-05-12 12:52:30,412 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 69 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-05-12 12:52:30,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 98 transitions, 349 flow [2024-05-12 12:52:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:52:30,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:52:30,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2024-05-12 12:52:30,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6513409961685823 [2024-05-12 12:52:30,423 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 154 flow. Second operand 3 states and 170 transitions. [2024-05-12 12:52:30,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 98 transitions, 349 flow [2024-05-12 12:52:30,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 98 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:52:30,429 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 167 flow [2024-05-12 12:52:30,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-05-12 12:52:30,433 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2024-05-12 12:52:30,433 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 167 flow [2024-05-12 12:52:30,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:30,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:30,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:30,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:52:30,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:30,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:30,435 INFO L85 PathProgramCache]: Analyzing trace with hash -617889227, now seen corresponding path program 1 times [2024-05-12 12:52:30,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:30,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323463585] [2024-05-12 12:52:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:30,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:30,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:30,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:30,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323463585] [2024-05-12 12:52:30,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323463585] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:30,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:30,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:52:30,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856796610] [2024-05-12 12:52:30,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:30,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:52:30,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:30,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:52:30,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:52:30,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:30,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:30,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:30,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:30,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:31,101 INFO L124 PetriNetUnfolderBase]: 3495/6201 cut-off events. [2024-05-12 12:52:31,101 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2024-05-12 12:52:31,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12339 conditions, 6201 events. 3495/6201 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 41613 event pairs, 722 based on Foata normal form. 12/6171 useless extension candidates. Maximal degree in co-relation 12324. Up to 4641 conditions per place. [2024-05-12 12:52:31,125 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 94 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2024-05-12 12:52:31,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 125 transitions, 475 flow [2024-05-12 12:52:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:52:31,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:52:31,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2024-05-12 12:52:31,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6350574712643678 [2024-05-12 12:52:31,128 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 167 flow. Second operand 4 states and 221 transitions. [2024-05-12 12:52:31,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 125 transitions, 475 flow [2024-05-12 12:52:31,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 125 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:52:31,130 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 191 flow [2024-05-12 12:52:31,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2024-05-12 12:52:31,131 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 4 predicate places. [2024-05-12 12:52:31,131 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 191 flow [2024-05-12 12:52:31,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:31,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:31,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:31,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:52:31,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:31,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:31,133 INFO L85 PathProgramCache]: Analyzing trace with hash -285073068, now seen corresponding path program 1 times [2024-05-12 12:52:31,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:31,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587726390] [2024-05-12 12:52:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:31,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:31,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:31,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587726390] [2024-05-12 12:52:31,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587726390] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:31,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:31,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:52:31,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678141468] [2024-05-12 12:52:31,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:31,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:52:31,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:31,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:52:31,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:52:31,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:31,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:31,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:31,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:31,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:31,743 INFO L124 PetriNetUnfolderBase]: 3477/6171 cut-off events. [2024-05-12 12:52:31,743 INFO L125 PetriNetUnfolderBase]: For 1284/1284 co-relation queries the response was YES. [2024-05-12 12:52:31,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12803 conditions, 6171 events. 3477/6171 cut-off events. For 1284/1284 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 41154 event pairs, 993 based on Foata normal form. 9/6141 useless extension candidates. Maximal degree in co-relation 12786. Up to 4632 conditions per place. [2024-05-12 12:52:31,818 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 93 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2024-05-12 12:52:31,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 489 flow [2024-05-12 12:52:31,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:52:31,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:52:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-05-12 12:52:31,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6235632183908046 [2024-05-12 12:52:31,820 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 191 flow. Second operand 4 states and 217 transitions. [2024-05-12 12:52:31,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 489 flow [2024-05-12 12:52:31,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 124 transitions, 480 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 12:52:31,824 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 207 flow [2024-05-12 12:52:31,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2024-05-12 12:52:31,825 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2024-05-12 12:52:31,825 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 207 flow [2024-05-12 12:52:31,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:31,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:31,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:31,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:52:31,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:31,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:31,826 INFO L85 PathProgramCache]: Analyzing trace with hash 34212851, now seen corresponding path program 1 times [2024-05-12 12:52:31,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:31,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073923254] [2024-05-12 12:52:31,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:31,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:31,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:31,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073923254] [2024-05-12 12:52:31,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073923254] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:31,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:31,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:52:31,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326152478] [2024-05-12 12:52:31,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:31,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:52:31,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:31,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:52:31,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:52:31,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:31,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:31,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:31,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:31,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:32,524 INFO L124 PetriNetUnfolderBase]: 3453/6124 cut-off events. [2024-05-12 12:52:32,524 INFO L125 PetriNetUnfolderBase]: For 1723/1723 co-relation queries the response was YES. [2024-05-12 12:52:32,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13072 conditions, 6124 events. 3453/6124 cut-off events. For 1723/1723 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 40950 event pairs, 277 based on Foata normal form. 16/6102 useless extension candidates. Maximal degree in co-relation 13054. Up to 3954 conditions per place. [2024-05-12 12:52:32,545 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 115 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2024-05-12 12:52:32,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 147 transitions, 589 flow [2024-05-12 12:52:32,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:32,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 271 transitions. [2024-05-12 12:52:32,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6229885057471264 [2024-05-12 12:52:32,547 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 207 flow. Second operand 5 states and 271 transitions. [2024-05-12 12:52:32,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 147 transitions, 589 flow [2024-05-12 12:52:32,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 147 transitions, 580 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 12:52:32,551 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 208 flow [2024-05-12 12:52:32,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2024-05-12 12:52:32,552 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2024-05-12 12:52:32,552 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 208 flow [2024-05-12 12:52:32,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:32,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:32,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:32,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:52:32,553 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:32,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash -440125057, now seen corresponding path program 1 times [2024-05-12 12:52:32,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:32,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12880078] [2024-05-12 12:52:32,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:32,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:32,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:32,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12880078] [2024-05-12 12:52:32,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12880078] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:32,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:32,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:52:32,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629098787] [2024-05-12 12:52:32,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:32,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:52:32,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:32,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:52:32,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:52:32,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-05-12 12:52:32,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:32,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:32,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-05-12 12:52:32,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:33,126 INFO L124 PetriNetUnfolderBase]: 4771/8399 cut-off events. [2024-05-12 12:52:33,126 INFO L125 PetriNetUnfolderBase]: For 2697/2701 co-relation queries the response was YES. [2024-05-12 12:52:33,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18049 conditions, 8399 events. 4771/8399 cut-off events. For 2697/2701 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 57279 event pairs, 2002 based on Foata normal form. 100/8230 useless extension candidates. Maximal degree in co-relation 18030. Up to 4646 conditions per place. [2024-05-12 12:52:33,224 INFO L140 encePairwiseOnDemand]: 73/87 looper letters, 101 selfloop transitions, 19 changer transitions 1/141 dead transitions. [2024-05-12 12:52:33,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 141 transitions, 622 flow [2024-05-12 12:52:33,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:33,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:33,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2024-05-12 12:52:33,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494252873563218 [2024-05-12 12:52:33,228 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 208 flow. Second operand 5 states and 239 transitions. [2024-05-12 12:52:33,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 141 transitions, 622 flow [2024-05-12 12:52:33,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 141 transitions, 596 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-05-12 12:52:33,234 INFO L231 Difference]: Finished difference. Result has 91 places, 87 transitions, 324 flow [2024-05-12 12:52:33,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=91, PETRI_TRANSITIONS=87} [2024-05-12 12:52:33,235 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-05-12 12:52:33,235 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 87 transitions, 324 flow [2024-05-12 12:52:33,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:33,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:33,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:33,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:52:33,236 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:33,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:33,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1966091090, now seen corresponding path program 1 times [2024-05-12 12:52:33,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:33,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754781221] [2024-05-12 12:52:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:33,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:33,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:33,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754781221] [2024-05-12 12:52:33,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754781221] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:33,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:33,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:52:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270120944] [2024-05-12 12:52:33,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:33,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:52:33,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:33,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:52:33,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:52:33,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:33,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 87 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:33,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:33,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:33,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:33,935 INFO L124 PetriNetUnfolderBase]: 3715/6906 cut-off events. [2024-05-12 12:52:33,935 INFO L125 PetriNetUnfolderBase]: For 4237/4385 co-relation queries the response was YES. [2024-05-12 12:52:33,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16337 conditions, 6906 events. 3715/6906 cut-off events. For 4237/4385 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 48555 event pairs, 1157 based on Foata normal form. 23/6914 useless extension candidates. Maximal degree in co-relation 16314. Up to 4482 conditions per place. [2024-05-12 12:52:33,974 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 109 selfloop transitions, 9 changer transitions 0/147 dead transitions. [2024-05-12 12:52:33,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 147 transitions, 722 flow [2024-05-12 12:52:33,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:33,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 264 transitions. [2024-05-12 12:52:33,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6068965517241379 [2024-05-12 12:52:33,976 INFO L175 Difference]: Start difference. First operand has 91 places, 87 transitions, 324 flow. Second operand 5 states and 264 transitions. [2024-05-12 12:52:33,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 147 transitions, 722 flow [2024-05-12 12:52:33,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 147 transitions, 718 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 12:52:33,992 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 343 flow [2024-05-12 12:52:33,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2024-05-12 12:52:33,993 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 18 predicate places. [2024-05-12 12:52:33,993 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 343 flow [2024-05-12 12:52:33,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:33,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:33,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:33,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:52:33,994 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:33,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:33,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1031483287, now seen corresponding path program 1 times [2024-05-12 12:52:33,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:33,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873262895] [2024-05-12 12:52:33,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:33,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:34,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873262895] [2024-05-12 12:52:34,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873262895] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:34,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:34,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:52:34,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750464806] [2024-05-12 12:52:34,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:34,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:52:34,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:34,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:52:34,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:52:34,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:34,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 87 transitions, 343 flow. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:34,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:34,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:34,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:34,637 INFO L124 PetriNetUnfolderBase]: 4045/7209 cut-off events. [2024-05-12 12:52:34,637 INFO L125 PetriNetUnfolderBase]: For 5590/5754 co-relation queries the response was YES. [2024-05-12 12:52:34,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17392 conditions, 7209 events. 4045/7209 cut-off events. For 5590/5754 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 49881 event pairs, 910 based on Foata normal form. 18/7213 useless extension candidates. Maximal degree in co-relation 17366. Up to 4965 conditions per place. [2024-05-12 12:52:34,683 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 123 selfloop transitions, 8 changer transitions 0/160 dead transitions. [2024-05-12 12:52:34,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 160 transitions, 815 flow [2024-05-12 12:52:34,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:34,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 272 transitions. [2024-05-12 12:52:34,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6252873563218391 [2024-05-12 12:52:34,685 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 343 flow. Second operand 5 states and 272 transitions. [2024-05-12 12:52:34,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 160 transitions, 815 flow [2024-05-12 12:52:34,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 160 transitions, 792 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-05-12 12:52:34,697 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 353 flow [2024-05-12 12:52:34,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=353, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2024-05-12 12:52:34,698 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-05-12 12:52:34,698 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 353 flow [2024-05-12 12:52:34,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:34,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:34,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:34,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 12:52:34,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:34,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:34,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1031471197, now seen corresponding path program 2 times [2024-05-12 12:52:34,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:34,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605981525] [2024-05-12 12:52:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:34,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:34,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:34,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605981525] [2024-05-12 12:52:34,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605981525] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:34,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:34,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:52:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917372480] [2024-05-12 12:52:34,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:34,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:52:34,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:52:34,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:52:34,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:34,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 353 flow. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:34,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:34,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:34,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:35,437 INFO L124 PetriNetUnfolderBase]: 4027/7499 cut-off events. [2024-05-12 12:52:35,437 INFO L125 PetriNetUnfolderBase]: For 5788/5952 co-relation queries the response was YES. [2024-05-12 12:52:35,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18351 conditions, 7499 events. 4027/7499 cut-off events. For 5788/5952 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 53912 event pairs, 1253 based on Foata normal form. 18/7499 useless extension candidates. Maximal degree in co-relation 18324. Up to 5028 conditions per place. [2024-05-12 12:52:35,472 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 120 selfloop transitions, 9 changer transitions 0/158 dead transitions. [2024-05-12 12:52:35,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 158 transitions, 817 flow [2024-05-12 12:52:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:35,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 268 transitions. [2024-05-12 12:52:35,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6160919540229886 [2024-05-12 12:52:35,474 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 353 flow. Second operand 5 states and 268 transitions. [2024-05-12 12:52:35,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 158 transitions, 817 flow [2024-05-12 12:52:35,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 158 transitions, 800 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-05-12 12:52:35,489 INFO L231 Difference]: Finished difference. Result has 100 places, 91 transitions, 376 flow [2024-05-12 12:52:35,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2024-05-12 12:52:35,491 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-05-12 12:52:35,491 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 376 flow [2024-05-12 12:52:35,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:35,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:35,494 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] [2024-05-12 12:52:35,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 12:52:35,494 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:35,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:35,495 INFO L85 PathProgramCache]: Analyzing trace with hash 230933320, now seen corresponding path program 1 times [2024-05-12 12:52:35,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:35,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76517454] [2024-05-12 12:52:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:35,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:35,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:35,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76517454] [2024-05-12 12:52:35,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76517454] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:35,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:35,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:52:35,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847931584] [2024-05-12 12:52:35,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:35,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:52:35,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:35,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:52:35,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:52:35,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2024-05-12 12:52:35,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:35,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:35,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2024-05-12 12:52:35,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:36,106 INFO L124 PetriNetUnfolderBase]: 1821/4050 cut-off events. [2024-05-12 12:52:36,107 INFO L125 PetriNetUnfolderBase]: For 2495/2547 co-relation queries the response was YES. [2024-05-12 12:52:36,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9386 conditions, 4050 events. 1821/4050 cut-off events. For 2495/2547 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 28080 event pairs, 515 based on Foata normal form. 219/4253 useless extension candidates. Maximal degree in co-relation 9358. Up to 2374 conditions per place. [2024-05-12 12:52:36,133 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 96 selfloop transitions, 7 changer transitions 0/133 dead transitions. [2024-05-12 12:52:36,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 133 transitions, 719 flow [2024-05-12 12:52:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:36,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2024-05-12 12:52:36,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5563218390804597 [2024-05-12 12:52:36,135 INFO L175 Difference]: Start difference. First operand has 100 places, 91 transitions, 376 flow. Second operand 5 states and 242 transitions. [2024-05-12 12:52:36,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 133 transitions, 719 flow [2024-05-12 12:52:36,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 133 transitions, 696 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-05-12 12:52:36,146 INFO L231 Difference]: Finished difference. Result has 102 places, 92 transitions, 365 flow [2024-05-12 12:52:36,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=102, PETRI_TRANSITIONS=92} [2024-05-12 12:52:36,147 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 24 predicate places. [2024-05-12 12:52:36,147 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 92 transitions, 365 flow [2024-05-12 12:52:36,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:36,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:36,148 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] [2024-05-12 12:52:36,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 12:52:36,148 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:36,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash 124380441, now seen corresponding path program 1 times [2024-05-12 12:52:36,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:36,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824718333] [2024-05-12 12:52:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:36,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:36,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:36,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824718333] [2024-05-12 12:52:36,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824718333] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:36,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:36,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:36,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356388326] [2024-05-12 12:52:36,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:36,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:52:36,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:36,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:52:36,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:52:36,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:36,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 92 transitions, 365 flow. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:36,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:36,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:36,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:36,695 INFO L124 PetriNetUnfolderBase]: 2102/4481 cut-off events. [2024-05-12 12:52:36,695 INFO L125 PetriNetUnfolderBase]: For 4213/4241 co-relation queries the response was YES. [2024-05-12 12:52:36,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11185 conditions, 4481 events. 2102/4481 cut-off events. For 4213/4241 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 31193 event pairs, 500 based on Foata normal form. 12/4485 useless extension candidates. Maximal degree in co-relation 11155. Up to 2293 conditions per place. [2024-05-12 12:52:36,716 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 139 selfloop transitions, 12 changer transitions 0/180 dead transitions. [2024-05-12 12:52:36,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 180 transitions, 961 flow [2024-05-12 12:52:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:52:36,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:52:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 314 transitions. [2024-05-12 12:52:36,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015325670498084 [2024-05-12 12:52:36,718 INFO L175 Difference]: Start difference. First operand has 102 places, 92 transitions, 365 flow. Second operand 6 states and 314 transitions. [2024-05-12 12:52:36,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 180 transitions, 961 flow [2024-05-12 12:52:36,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 180 transitions, 958 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:52:36,726 INFO L231 Difference]: Finished difference. Result has 106 places, 93 transitions, 407 flow [2024-05-12 12:52:36,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=407, PETRI_PLACES=106, PETRI_TRANSITIONS=93} [2024-05-12 12:52:36,726 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 28 predicate places. [2024-05-12 12:52:36,727 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 93 transitions, 407 flow [2024-05-12 12:52:36,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:36,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:36,727 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] [2024-05-12 12:52:36,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 12:52:36,727 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:36,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:36,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1059990185, now seen corresponding path program 2 times [2024-05-12 12:52:36,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:36,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91821195] [2024-05-12 12:52:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:36,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:36,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:36,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91821195] [2024-05-12 12:52:36,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91821195] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:36,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:36,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:36,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211942906] [2024-05-12 12:52:36,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:36,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:52:36,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:36,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:52:36,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:52:36,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:36,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 93 transitions, 407 flow. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:36,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:36,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:36,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:37,274 INFO L124 PetriNetUnfolderBase]: 2081/4484 cut-off events. [2024-05-12 12:52:37,274 INFO L125 PetriNetUnfolderBase]: For 5383/5411 co-relation queries the response was YES. [2024-05-12 12:52:37,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11594 conditions, 4484 events. 2081/4484 cut-off events. For 5383/5411 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 31535 event pairs, 828 based on Foata normal form. 12/4474 useless extension candidates. Maximal degree in co-relation 11563. Up to 2626 conditions per place. [2024-05-12 12:52:37,298 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 123 selfloop transitions, 12 changer transitions 0/164 dead transitions. [2024-05-12 12:52:37,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 164 transitions, 906 flow [2024-05-12 12:52:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:52:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:52:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 299 transitions. [2024-05-12 12:52:37,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727969348659003 [2024-05-12 12:52:37,300 INFO L175 Difference]: Start difference. First operand has 106 places, 93 transitions, 407 flow. Second operand 6 states and 299 transitions. [2024-05-12 12:52:37,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 164 transitions, 906 flow [2024-05-12 12:52:37,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 164 transitions, 887 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 12:52:37,312 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 420 flow [2024-05-12 12:52:37,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=420, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2024-05-12 12:52:37,313 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 30 predicate places. [2024-05-12 12:52:37,313 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 420 flow [2024-05-12 12:52:37,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:37,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:37,313 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] [2024-05-12 12:52:37,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 12:52:37,314 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:37,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1474142187, now seen corresponding path program 1 times [2024-05-12 12:52:37,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:37,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513488799] [2024-05-12 12:52:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:37,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:37,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:37,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513488799] [2024-05-12 12:52:37,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513488799] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:37,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:37,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:37,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844720369] [2024-05-12 12:52:37,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:37,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:52:37,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:37,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:52:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:52:37,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:37,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 420 flow. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:37,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:37,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:37,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:37,961 INFO L124 PetriNetUnfolderBase]: 2294/4987 cut-off events. [2024-05-12 12:52:37,961 INFO L125 PetriNetUnfolderBase]: For 5931/5959 co-relation queries the response was YES. [2024-05-12 12:52:37,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12839 conditions, 4987 events. 2294/4987 cut-off events. For 5931/5959 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 36103 event pairs, 1153 based on Foata normal form. 12/4989 useless extension candidates. Maximal degree in co-relation 12807. Up to 3262 conditions per place. [2024-05-12 12:52:37,988 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 121 selfloop transitions, 8 changer transitions 0/158 dead transitions. [2024-05-12 12:52:37,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 158 transitions, 878 flow [2024-05-12 12:52:37,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:52:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:52:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 296 transitions. [2024-05-12 12:52:37,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670498084291188 [2024-05-12 12:52:37,990 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 420 flow. Second operand 6 states and 296 transitions. [2024-05-12 12:52:37,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 158 transitions, 878 flow [2024-05-12 12:52:38,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 158 transitions, 856 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 12:52:38,005 INFO L231 Difference]: Finished difference. Result has 110 places, 94 transitions, 428 flow [2024-05-12 12:52:38,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=428, PETRI_PLACES=110, PETRI_TRANSITIONS=94} [2024-05-12 12:52:38,005 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 32 predicate places. [2024-05-12 12:52:38,005 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 94 transitions, 428 flow [2024-05-12 12:52:38,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:38,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:38,006 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] [2024-05-12 12:52:38,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 12:52:38,006 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:38,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:38,007 INFO L85 PathProgramCache]: Analyzing trace with hash -97204449, now seen corresponding path program 2 times [2024-05-12 12:52:38,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:38,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093107336] [2024-05-12 12:52:38,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:38,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:38,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:38,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093107336] [2024-05-12 12:52:38,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093107336] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:38,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:38,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:38,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339433906] [2024-05-12 12:52:38,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:38,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:52:38,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:38,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:52:38,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:52:38,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:38,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 94 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:38,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:38,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:38,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:38,629 INFO L124 PetriNetUnfolderBase]: 2498/5387 cut-off events. [2024-05-12 12:52:38,630 INFO L125 PetriNetUnfolderBase]: For 6833/6861 co-relation queries the response was YES. [2024-05-12 12:52:38,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13881 conditions, 5387 events. 2498/5387 cut-off events. For 6833/6861 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 39468 event pairs, 915 based on Foata normal form. 18/5383 useless extension candidates. Maximal degree in co-relation 13848. Up to 2792 conditions per place. [2024-05-12 12:52:38,657 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 145 selfloop transitions, 13 changer transitions 0/187 dead transitions. [2024-05-12 12:52:38,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 187 transitions, 1040 flow [2024-05-12 12:52:38,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:52:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:52:38,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 327 transitions. [2024-05-12 12:52:38,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6264367816091954 [2024-05-12 12:52:38,664 INFO L175 Difference]: Start difference. First operand has 110 places, 94 transitions, 428 flow. Second operand 6 states and 327 transitions. [2024-05-12 12:52:38,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 187 transitions, 1040 flow [2024-05-12 12:52:38,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 187 transitions, 1020 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-05-12 12:52:38,679 INFO L231 Difference]: Finished difference. Result has 112 places, 95 transitions, 458 flow [2024-05-12 12:52:38,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=458, PETRI_PLACES=112, PETRI_TRANSITIONS=95} [2024-05-12 12:52:38,680 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 34 predicate places. [2024-05-12 12:52:38,680 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 95 transitions, 458 flow [2024-05-12 12:52:38,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:38,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:38,680 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] [2024-05-12 12:52:38,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 12:52:38,681 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:38,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:38,681 INFO L85 PathProgramCache]: Analyzing trace with hash -97196079, now seen corresponding path program 3 times [2024-05-12 12:52:38,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:38,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208213913] [2024-05-12 12:52:38,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:38,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:38,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:38,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208213913] [2024-05-12 12:52:38,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208213913] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:38,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:38,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:38,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485228472] [2024-05-12 12:52:38,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:38,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:52:38,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:38,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:52:38,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:52:38,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:38,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 95 transitions, 458 flow. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:38,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:38,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:38,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:39,307 INFO L124 PetriNetUnfolderBase]: 2477/5453 cut-off events. [2024-05-12 12:52:39,307 INFO L125 PetriNetUnfolderBase]: For 7318/7346 co-relation queries the response was YES. [2024-05-12 12:52:39,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14033 conditions, 5453 events. 2477/5453 cut-off events. For 7318/7346 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 40346 event pairs, 1258 based on Foata normal form. 12/5455 useless extension candidates. Maximal degree in co-relation 13999. Up to 2983 conditions per place. [2024-05-12 12:52:39,327 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 133 selfloop transitions, 13 changer transitions 0/175 dead transitions. [2024-05-12 12:52:39,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 175 transitions, 1001 flow [2024-05-12 12:52:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:52:39,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:52:39,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 313 transitions. [2024-05-12 12:52:39,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5996168582375478 [2024-05-12 12:52:39,329 INFO L175 Difference]: Start difference. First operand has 112 places, 95 transitions, 458 flow. Second operand 6 states and 313 transitions. [2024-05-12 12:52:39,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 175 transitions, 1001 flow [2024-05-12 12:52:39,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 175 transitions, 979 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-05-12 12:52:39,344 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 471 flow [2024-05-12 12:52:39,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=471, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2024-05-12 12:52:39,345 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 36 predicate places. [2024-05-12 12:52:39,345 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 471 flow [2024-05-12 12:52:39,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:39,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:39,346 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] [2024-05-12 12:52:39,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 12:52:39,346 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:39,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash 376943255, now seen corresponding path program 1 times [2024-05-12 12:52:39,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:39,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657547764] [2024-05-12 12:52:39,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:39,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:39,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:39,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657547764] [2024-05-12 12:52:39,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657547764] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:39,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:39,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:52:39,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882165741] [2024-05-12 12:52:39,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:39,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:52:39,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:39,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:52:39,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:52:39,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:39,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 471 flow. Second operand has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:39,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:39,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:39,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:39,963 INFO L124 PetriNetUnfolderBase]: 2857/6216 cut-off events. [2024-05-12 12:52:39,964 INFO L125 PetriNetUnfolderBase]: For 7856/7884 co-relation queries the response was YES. [2024-05-12 12:52:39,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16028 conditions, 6216 events. 2857/6216 cut-off events. For 7856/7884 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 47227 event pairs, 779 based on Foata normal form. 16/6224 useless extension candidates. Maximal degree in co-relation 15993. Up to 2252 conditions per place. [2024-05-12 12:52:39,997 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 165 selfloop transitions, 15 changer transitions 0/209 dead transitions. [2024-05-12 12:52:39,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 209 transitions, 1207 flow [2024-05-12 12:52:39,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:52:39,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:52:39,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 368 transitions. [2024-05-12 12:52:39,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6042692939244664 [2024-05-12 12:52:39,999 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 471 flow. Second operand 7 states and 368 transitions. [2024-05-12 12:52:39,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 209 transitions, 1207 flow [2024-05-12 12:52:40,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 209 transitions, 1182 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-05-12 12:52:40,017 INFO L231 Difference]: Finished difference. Result has 117 places, 95 transitions, 485 flow [2024-05-12 12:52:40,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=485, PETRI_PLACES=117, PETRI_TRANSITIONS=95} [2024-05-12 12:52:40,018 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 39 predicate places. [2024-05-12 12:52:40,018 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 95 transitions, 485 flow [2024-05-12 12:52:40,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:40,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:40,018 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] [2024-05-12 12:52:40,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 12:52:40,019 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:40,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:40,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1796121517, now seen corresponding path program 2 times [2024-05-12 12:52:40,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:40,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089914106] [2024-05-12 12:52:40,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:40,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:40,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:40,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089914106] [2024-05-12 12:52:40,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089914106] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:40,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:40,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:52:40,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744192492] [2024-05-12 12:52:40,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:40,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:52:40,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:40,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:52:40,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:52:40,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:40,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 95 transitions, 485 flow. Second operand has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:40,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:40,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:40,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:40,731 INFO L124 PetriNetUnfolderBase]: 3237/7111 cut-off events. [2024-05-12 12:52:40,731 INFO L125 PetriNetUnfolderBase]: For 9423/9451 co-relation queries the response was YES. [2024-05-12 12:52:40,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18361 conditions, 7111 events. 3237/7111 cut-off events. For 9423/9451 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 56160 event pairs, 1173 based on Foata normal form. 16/7105 useless extension candidates. Maximal degree in co-relation 18325. Up to 3332 conditions per place. [2024-05-12 12:52:40,767 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 145 selfloop transitions, 17 changer transitions 0/191 dead transitions. [2024-05-12 12:52:40,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 191 transitions, 1124 flow [2024-05-12 12:52:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:52:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:52:40,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 350 transitions. [2024-05-12 12:52:40,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-05-12 12:52:40,769 INFO L175 Difference]: Start difference. First operand has 117 places, 95 transitions, 485 flow. Second operand 7 states and 350 transitions. [2024-05-12 12:52:40,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 191 transitions, 1124 flow [2024-05-12 12:52:40,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 191 transitions, 1087 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-05-12 12:52:40,789 INFO L231 Difference]: Finished difference. Result has 117 places, 95 transitions, 494 flow [2024-05-12 12:52:40,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=117, PETRI_TRANSITIONS=95} [2024-05-12 12:52:40,790 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 39 predicate places. [2024-05-12 12:52:40,790 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 95 transitions, 494 flow [2024-05-12 12:52:40,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:40,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:40,790 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] [2024-05-12 12:52:40,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 12:52:40,791 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:40,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1796133607, now seen corresponding path program 3 times [2024-05-12 12:52:40,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:40,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572215491] [2024-05-12 12:52:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:40,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:40,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:40,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572215491] [2024-05-12 12:52:40,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572215491] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:40,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:40,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:52:40,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327788687] [2024-05-12 12:52:40,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:40,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:52:40,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:40,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:52:40,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:52:40,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:40,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 95 transitions, 494 flow. Second operand has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:40,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:40,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:40,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:41,559 INFO L124 PetriNetUnfolderBase]: 3617/8042 cut-off events. [2024-05-12 12:52:41,559 INFO L125 PetriNetUnfolderBase]: For 10307/10335 co-relation queries the response was YES. [2024-05-12 12:52:41,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20532 conditions, 8042 events. 3617/8042 cut-off events. For 10307/10335 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 65555 event pairs, 1395 based on Foata normal form. 16/8050 useless extension candidates. Maximal degree in co-relation 20497. Up to 3583 conditions per place. [2024-05-12 12:52:41,588 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 152 selfloop transitions, 14 changer transitions 0/195 dead transitions. [2024-05-12 12:52:41,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 195 transitions, 1149 flow [2024-05-12 12:52:41,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:52:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:52:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 356 transitions. [2024-05-12 12:52:41,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845648604269293 [2024-05-12 12:52:41,590 INFO L175 Difference]: Start difference. First operand has 117 places, 95 transitions, 494 flow. Second operand 7 states and 356 transitions. [2024-05-12 12:52:41,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 195 transitions, 1149 flow [2024-05-12 12:52:41,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 195 transitions, 1096 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-05-12 12:52:41,612 INFO L231 Difference]: Finished difference. Result has 115 places, 95 transitions, 480 flow [2024-05-12 12:52:41,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=480, PETRI_PLACES=115, PETRI_TRANSITIONS=95} [2024-05-12 12:52:41,612 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 37 predicate places. [2024-05-12 12:52:41,612 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 95 transitions, 480 flow [2024-05-12 12:52:41,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:41,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:41,613 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] [2024-05-12 12:52:41,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 12:52:41,613 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:41,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:41,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1200471971, now seen corresponding path program 4 times [2024-05-12 12:52:41,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:41,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769049329] [2024-05-12 12:52:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:41,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:41,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:41,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769049329] [2024-05-12 12:52:41,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769049329] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:41,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:41,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:52:41,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053418082] [2024-05-12 12:52:41,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:41,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:52:41,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:41,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:52:41,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:52:41,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:41,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 95 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:41,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:41,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:41,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:42,365 INFO L124 PetriNetUnfolderBase]: 3991/8888 cut-off events. [2024-05-12 12:52:42,365 INFO L125 PetriNetUnfolderBase]: For 9066/9094 co-relation queries the response was YES. [2024-05-12 12:52:42,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22167 conditions, 8888 events. 3991/8888 cut-off events. For 9066/9094 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 74251 event pairs, 1476 based on Foata normal form. 20/8898 useless extension candidates. Maximal degree in co-relation 22135. Up to 3617 conditions per place. [2024-05-12 12:52:42,404 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 170 selfloop transitions, 15 changer transitions 0/214 dead transitions. [2024-05-12 12:52:42,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 214 transitions, 1226 flow [2024-05-12 12:52:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:52:42,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:52:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 381 transitions. [2024-05-12 12:52:42,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625615763546798 [2024-05-12 12:52:42,406 INFO L175 Difference]: Start difference. First operand has 115 places, 95 transitions, 480 flow. Second operand 7 states and 381 transitions. [2024-05-12 12:52:42,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 214 transitions, 1226 flow [2024-05-12 12:52:42,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 214 transitions, 1190 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-05-12 12:52:42,424 INFO L231 Difference]: Finished difference. Result has 115 places, 95 transitions, 482 flow [2024-05-12 12:52:42,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=482, PETRI_PLACES=115, PETRI_TRANSITIONS=95} [2024-05-12 12:52:42,425 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 37 predicate places. [2024-05-12 12:52:42,425 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 95 transitions, 482 flow [2024-05-12 12:52:42,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:42,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:42,426 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] [2024-05-12 12:52:42,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 12:52:42,426 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:42,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1773302503, now seen corresponding path program 5 times [2024-05-12 12:52:42,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:42,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757350237] [2024-05-12 12:52:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:42,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:42,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:42,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757350237] [2024-05-12 12:52:42,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757350237] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:42,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:42,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:52:42,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964501056] [2024-05-12 12:52:42,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:42,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:52:42,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:42,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:52:42,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:52:42,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 12:52:42,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 95 transitions, 482 flow. Second operand has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:42,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:42,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 12:52:42,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:43,272 INFO L124 PetriNetUnfolderBase]: 3967/8927 cut-off events. [2024-05-12 12:52:43,273 INFO L125 PetriNetUnfolderBase]: For 8881/8909 co-relation queries the response was YES. [2024-05-12 12:52:43,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22129 conditions, 8927 events. 3967/8927 cut-off events. For 8881/8909 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 74945 event pairs, 1750 based on Foata normal form. 16/8923 useless extension candidates. Maximal degree in co-relation 22097. Up to 3762 conditions per place. [2024-05-12 12:52:43,321 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 152 selfloop transitions, 18 changer transitions 0/199 dead transitions. [2024-05-12 12:52:43,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 199 transitions, 1143 flow [2024-05-12 12:52:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:52:43,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:52:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 363 transitions. [2024-05-12 12:52:43,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5960591133004927 [2024-05-12 12:52:43,323 INFO L175 Difference]: Start difference. First operand has 115 places, 95 transitions, 482 flow. Second operand 7 states and 363 transitions. [2024-05-12 12:52:43,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 199 transitions, 1143 flow [2024-05-12 12:52:43,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 199 transitions, 1079 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-05-12 12:52:43,342 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 438 flow [2024-05-12 12:52:43,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2024-05-12 12:52:43,343 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 31 predicate places. [2024-05-12 12:52:43,343 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 438 flow [2024-05-12 12:52:43,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:43,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:43,344 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] [2024-05-12 12:52:43,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 12:52:43,344 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:43,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:43,344 INFO L85 PathProgramCache]: Analyzing trace with hash -848438911, now seen corresponding path program 1 times [2024-05-12 12:52:43,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:43,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876303247] [2024-05-12 12:52:43,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:43,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:43,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:43,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876303247] [2024-05-12 12:52:43,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876303247] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:43,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:43,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:43,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280166909] [2024-05-12 12:52:43,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:43,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:52:43,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:43,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:52:43,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:52:43,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-05-12 12:52:43,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 438 flow. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:43,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:43,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-05-12 12:52:43,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:44,072 INFO L124 PetriNetUnfolderBase]: 4679/9265 cut-off events. [2024-05-12 12:52:44,072 INFO L125 PetriNetUnfolderBase]: For 8455/8455 co-relation queries the response was YES. [2024-05-12 12:52:44,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23421 conditions, 9265 events. 4679/9265 cut-off events. For 8455/8455 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 69909 event pairs, 2854 based on Foata normal form. 268/9515 useless extension candidates. Maximal degree in co-relation 23395. Up to 4922 conditions per place. [2024-05-12 12:52:44,102 INFO L140 encePairwiseOnDemand]: 72/87 looper letters, 102 selfloop transitions, 32 changer transitions 5/158 dead transitions. [2024-05-12 12:52:44,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 158 transitions, 973 flow [2024-05-12 12:52:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:52:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:52:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 257 transitions. [2024-05-12 12:52:44,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49233716475095785 [2024-05-12 12:52:44,119 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 438 flow. Second operand 6 states and 257 transitions. [2024-05-12 12:52:44,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 158 transitions, 973 flow [2024-05-12 12:52:44,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 158 transitions, 936 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-05-12 12:52:44,130 INFO L231 Difference]: Finished difference. Result has 111 places, 105 transitions, 597 flow [2024-05-12 12:52:44,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=597, PETRI_PLACES=111, PETRI_TRANSITIONS=105} [2024-05-12 12:52:44,135 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 33 predicate places. [2024-05-12 12:52:44,135 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 105 transitions, 597 flow [2024-05-12 12:52:44,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:44,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:44,136 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] [2024-05-12 12:52:44,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 12:52:44,136 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:44,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:44,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1013571401, now seen corresponding path program 1 times [2024-05-12 12:52:44,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:44,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004137168] [2024-05-12 12:52:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:44,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:44,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:44,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004137168] [2024-05-12 12:52:44,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004137168] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:44,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:44,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:52:44,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943472853] [2024-05-12 12:52:44,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:44,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:52:44,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:44,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:52:44,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:52:44,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-05-12 12:52:44,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 105 transitions, 597 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:44,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:44,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-05-12 12:52:44,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:44,771 INFO L124 PetriNetUnfolderBase]: 3781/7647 cut-off events. [2024-05-12 12:52:44,772 INFO L125 PetriNetUnfolderBase]: For 10732/10732 co-relation queries the response was YES. [2024-05-12 12:52:44,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20588 conditions, 7647 events. 3781/7647 cut-off events. For 10732/10732 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 56716 event pairs, 1902 based on Foata normal form. 48/7686 useless extension candidates. Maximal degree in co-relation 20560. Up to 5374 conditions per place. [2024-05-12 12:52:44,809 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 112 selfloop transitions, 34 changer transitions 1/166 dead transitions. [2024-05-12 12:52:44,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 166 transitions, 1211 flow [2024-05-12 12:52:44,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 223 transitions. [2024-05-12 12:52:44,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126436781609195 [2024-05-12 12:52:44,810 INFO L175 Difference]: Start difference. First operand has 111 places, 105 transitions, 597 flow. Second operand 5 states and 223 transitions. [2024-05-12 12:52:44,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 166 transitions, 1211 flow [2024-05-12 12:52:44,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 166 transitions, 1179 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 12:52:44,833 INFO L231 Difference]: Finished difference. Result has 117 places, 119 transitions, 827 flow [2024-05-12 12:52:44,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=827, PETRI_PLACES=117, PETRI_TRANSITIONS=119} [2024-05-12 12:52:44,834 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 39 predicate places. [2024-05-12 12:52:44,834 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 119 transitions, 827 flow [2024-05-12 12:52:44,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:44,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:44,834 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] [2024-05-12 12:52:44,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 12:52:44,835 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:44,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:44,835 INFO L85 PathProgramCache]: Analyzing trace with hash 823604506, now seen corresponding path program 1 times [2024-05-12 12:52:44,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:44,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87635617] [2024-05-12 12:52:44,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:44,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:44,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87635617] [2024-05-12 12:52:44,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87635617] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:44,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:44,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:52:44,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146203319] [2024-05-12 12:52:44,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:44,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:52:44,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:44,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:52:44,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:52:44,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2024-05-12 12:52:44,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 827 flow. Second operand has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:44,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:44,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2024-05-12 12:52:44,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:45,313 INFO L124 PetriNetUnfolderBase]: 1858/4290 cut-off events. [2024-05-12 12:52:45,314 INFO L125 PetriNetUnfolderBase]: For 6360/6392 co-relation queries the response was YES. [2024-05-12 12:52:45,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12591 conditions, 4290 events. 1858/4290 cut-off events. For 6360/6392 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 31661 event pairs, 609 based on Foata normal form. 416/4611 useless extension candidates. Maximal degree in co-relation 12559. Up to 2033 conditions per place. [2024-05-12 12:52:45,331 INFO L140 encePairwiseOnDemand]: 69/87 looper letters, 82 selfloop transitions, 18 changer transitions 2/138 dead transitions. [2024-05-12 12:52:45,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 138 transitions, 1068 flow [2024-05-12 12:52:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:45,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 235 transitions. [2024-05-12 12:52:45,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2024-05-12 12:52:45,333 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 827 flow. Second operand 5 states and 235 transitions. [2024-05-12 12:52:45,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 138 transitions, 1068 flow [2024-05-12 12:52:45,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 138 transitions, 1048 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-05-12 12:52:45,351 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 792 flow [2024-05-12 12:52:45,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=792, PETRI_PLACES=121, PETRI_TRANSITIONS=116} [2024-05-12 12:52:45,352 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 43 predicate places. [2024-05-12 12:52:45,352 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 792 flow [2024-05-12 12:52:45,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:45,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:45,352 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] [2024-05-12 12:52:45,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 12:52:45,353 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:45,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:45,353 INFO L85 PathProgramCache]: Analyzing trace with hash 150132802, now seen corresponding path program 1 times [2024-05-12 12:52:45,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:45,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828608013] [2024-05-12 12:52:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:45,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:45,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:45,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828608013] [2024-05-12 12:52:45,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828608013] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:45,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:45,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:52:45,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131132275] [2024-05-12 12:52:45,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:45,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:52:45,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:45,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:52:45,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:52:45,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2024-05-12 12:52:45,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 116 transitions, 792 flow. Second operand has 7 states, 7 states have (on average 35.42857142857143) internal successors, (248), 7 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:45,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:45,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2024-05-12 12:52:45,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:45,850 INFO L124 PetriNetUnfolderBase]: 1313/3202 cut-off events. [2024-05-12 12:52:45,850 INFO L125 PetriNetUnfolderBase]: For 5171/5183 co-relation queries the response was YES. [2024-05-12 12:52:45,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10074 conditions, 3202 events. 1313/3202 cut-off events. For 5171/5183 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 22231 event pairs, 445 based on Foata normal form. 72/3264 useless extension candidates. Maximal degree in co-relation 10039. Up to 2303 conditions per place. [2024-05-12 12:52:45,861 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 78 selfloop transitions, 7 changer transitions 11/120 dead transitions. [2024-05-12 12:52:45,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 120 transitions, 977 flow [2024-05-12 12:52:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:45,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2024-05-12 12:52:45,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011494252873563 [2024-05-12 12:52:45,863 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 792 flow. Second operand 5 states and 218 transitions. [2024-05-12 12:52:45,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 120 transitions, 977 flow [2024-05-12 12:52:45,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 120 transitions, 873 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-05-12 12:52:45,873 INFO L231 Difference]: Finished difference. Result has 110 places, 91 transitions, 554 flow [2024-05-12 12:52:45,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=554, PETRI_PLACES=110, PETRI_TRANSITIONS=91} [2024-05-12 12:52:45,874 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 32 predicate places. [2024-05-12 12:52:45,874 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 91 transitions, 554 flow [2024-05-12 12:52:45,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.42857142857143) internal successors, (248), 7 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:45,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:45,875 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, 1, 1] [2024-05-12 12:52:45,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 12:52:45,875 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:45,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:45,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2145678570, now seen corresponding path program 1 times [2024-05-12 12:52:45,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:45,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421624898] [2024-05-12 12:52:45,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:45,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:46,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:46,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421624898] [2024-05-12 12:52:46,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421624898] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:46,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:46,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:52:46,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242147350] [2024-05-12 12:52:46,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:46,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:52:46,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:46,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:52:46,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:52:46,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2024-05-12 12:52:46,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 91 transitions, 554 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:46,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:46,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2024-05-12 12:52:46,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:46,239 INFO L124 PetriNetUnfolderBase]: 928/2264 cut-off events. [2024-05-12 12:52:46,239 INFO L125 PetriNetUnfolderBase]: For 2868/2868 co-relation queries the response was YES. [2024-05-12 12:52:46,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6668 conditions, 2264 events. 928/2264 cut-off events. For 2868/2868 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 14210 event pairs, 403 based on Foata normal form. 61/2320 useless extension candidates. Maximal degree in co-relation 6635. Up to 1137 conditions per place. [2024-05-12 12:52:46,247 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 83 selfloop transitions, 6 changer transitions 4/115 dead transitions. [2024-05-12 12:52:46,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 115 transitions, 894 flow [2024-05-12 12:52:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 216 transitions. [2024-05-12 12:52:46,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496551724137931 [2024-05-12 12:52:46,249 INFO L175 Difference]: Start difference. First operand has 110 places, 91 transitions, 554 flow. Second operand 5 states and 216 transitions. [2024-05-12 12:52:46,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 115 transitions, 894 flow [2024-05-12 12:52:46,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 115 transitions, 832 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-05-12 12:52:46,255 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 481 flow [2024-05-12 12:52:46,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=481, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2024-05-12 12:52:46,256 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2024-05-12 12:52:46,256 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 481 flow [2024-05-12 12:52:46,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:46,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:46,256 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:46,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 12:52:46,257 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 12:52:46,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:46,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1241904131, now seen corresponding path program 1 times [2024-05-12 12:52:46,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:46,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736816739] [2024-05-12 12:52:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:46,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:46,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:46,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736816739] [2024-05-12 12:52:46,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736816739] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:46,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:46,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:46,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446685559] [2024-05-12 12:52:46,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:46,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:52:46,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:52:46,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:52:46,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-05-12 12:52:46,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 86 transitions, 481 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:46,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:46,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-05-12 12:52:46,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:46,559 INFO L124 PetriNetUnfolderBase]: 1029/2278 cut-off events. [2024-05-12 12:52:46,560 INFO L125 PetriNetUnfolderBase]: For 2391/2391 co-relation queries the response was YES. [2024-05-12 12:52:46,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6618 conditions, 2278 events. 1029/2278 cut-off events. For 2391/2391 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 13614 event pairs, 677 based on Foata normal form. 28/2297 useless extension candidates. Maximal degree in co-relation 6588. Up to 1495 conditions per place. [2024-05-12 12:52:46,566 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 0 selfloop transitions, 0 changer transitions 113/113 dead transitions. [2024-05-12 12:52:46,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 113 transitions, 821 flow [2024-05-12 12:52:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:52:46,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:52:46,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 212 transitions. [2024-05-12 12:52:46,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061302681992337 [2024-05-12 12:52:46,567 INFO L175 Difference]: Start difference. First operand has 101 places, 86 transitions, 481 flow. Second operand 6 states and 212 transitions. [2024-05-12 12:52:46,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 113 transitions, 821 flow [2024-05-12 12:52:46,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 113 transitions, 802 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-05-12 12:52:46,571 INFO L231 Difference]: Finished difference. Result has 100 places, 0 transitions, 0 flow [2024-05-12 12:52:46,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=100, PETRI_TRANSITIONS=0} [2024-05-12 12:52:46,572 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-05-12 12:52:46,572 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 0 transitions, 0 flow [2024-05-12 12:52:46,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:46,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-05-12 12:52:46,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-05-12 12:52:46,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2024-05-12 12:52:46,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2024-05-12 12:52:46,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2024-05-12 12:52:46,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2024-05-12 12:52:46,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-05-12 12:52:46,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-05-12 12:52:46,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 12:52:46,578 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:46,580 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 12:52:46,580 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 12:52:46,583 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 12:52:46,583 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 12:52:46,584 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 12:52:46 BasicIcfg [2024-05-12 12:52:46,584 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 12:52:46,584 INFO L158 Benchmark]: Toolchain (without parser) took 18653.92ms. Allocated memory was 121.6MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 74.2MB in the beginning and 1.3GB in the end (delta: -1.3GB). Peak memory consumption was 528.8MB. Max. memory is 16.1GB. [2024-05-12 12:52:46,585 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 100.7MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:52:46,585 INFO L158 Benchmark]: Witness Parser took 0.43ms. Allocated memory is still 121.6MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:52:46,585 INFO L158 Benchmark]: CACSL2BoogieTranslator took 609.72ms. Allocated memory is still 121.6MB. Free memory was 74.0MB in the beginning and 84.3MB in the end (delta: -10.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-05-12 12:52:46,585 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.56ms. Allocated memory is still 121.6MB. Free memory was 84.3MB in the beginning and 82.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:52:46,585 INFO L158 Benchmark]: Boogie Preprocessor took 51.48ms. Allocated memory is still 121.6MB. Free memory was 82.0MB in the beginning and 79.4MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-05-12 12:52:46,585 INFO L158 Benchmark]: RCFGBuilder took 683.35ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 79.0MB in the beginning and 117.5MB in the end (delta: -38.6MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. [2024-05-12 12:52:46,586 INFO L158 Benchmark]: TraceAbstraction took 17243.85ms. Allocated memory was 153.1MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 116.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 540.8MB. Max. memory is 16.1GB. [2024-05-12 12:52:46,587 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 100.7MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.43ms. Allocated memory is still 121.6MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 609.72ms. Allocated memory is still 121.6MB. Free memory was 74.0MB in the beginning and 84.3MB in the end (delta: -10.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.56ms. Allocated memory is still 121.6MB. Free memory was 84.3MB in the beginning and 82.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.48ms. Allocated memory is still 121.6MB. Free memory was 82.0MB in the beginning and 79.4MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 683.35ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 79.0MB in the beginning and 117.5MB in the end (delta: -38.6MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. * TraceAbstraction took 17243.85ms. Allocated memory was 153.1MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 116.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 540.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 711]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 712]: 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 - 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 5 procedures, 114 locations, 8 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: 17.2s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 14.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2469 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2355 mSDsluCounter, 120 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 82 mSDsCounter, 219 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6082 IncrementalHoareTripleChecker+Invalid, 6301 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 219 mSolverCounterUnsat, 38 mSDtfsCounter, 6082 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=827occurred in iteration=21, InterpolantAutomatonStates: 138, 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, 2.0s InterpolantComputationTime, 584 NumberOfCodeBlocks, 584 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 559 ConstructedInterpolants, 0 QuantifiedInterpolants, 3789 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 12:52:46,612 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