./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi006_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi006_power.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi006_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi006_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:02:10,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:02:10,340 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:02:10,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:02:10,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:02:10,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:02:10,397 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:02:10,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:02:10,398 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:02:10,401 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:02:10,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:02:10,401 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:02:10,402 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:02:10,403 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:02:10,404 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:02:10,404 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:02:10,404 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:02:10,404 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:02:10,404 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:02:10,405 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:02:10,405 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:02:10,405 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:02:10,405 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:02:10,406 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:02:10,406 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:02:10,406 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:02:10,406 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:02:10,406 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:02:10,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:02:10,407 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:02:10,408 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:02:10,408 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:02:10,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:02:10,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:02:10,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:02:10,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:02:10,409 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:02:10,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:02:10,409 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:02:10,409 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:02:10,410 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:02:10,410 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:02:10,410 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:02:10,410 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:02:10,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:02:10,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:02:10,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:02:10,734 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:02:10,736 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:02:10,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi006_power.opt.yml/witness.yml [2024-06-28 00:02:10,881 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:02:10,882 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:02:10,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi006_power.opt.i [2024-06-28 00:02:12,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:02:12,382 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:02:12,383 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi006_power.opt.i [2024-06-28 00:02:12,397 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35946ffef/1b8a5c2929b742d999511b646d106ea8/FLAG2f150a0e4 [2024-06-28 00:02:12,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35946ffef/1b8a5c2929b742d999511b646d106ea8 [2024-06-28 00:02:12,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:02:12,414 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:02:12,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:02:12,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:02:12,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:02:12,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:02:10" (1/2) ... [2024-06-28 00:02:12,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f27208 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:12, skipping insertion in model container [2024-06-28 00:02:12,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:02:10" (1/2) ... [2024-06-28 00:02:12,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4698f2cb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:12, skipping insertion in model container [2024-06-28 00:02:12,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:02:12" (2/2) ... [2024-06-28 00:02:12,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f27208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:12, skipping insertion in model container [2024-06-28 00:02:12,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:02:12" (2/2) ... [2024-06-28 00:02:12,428 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:02:12,454 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:02:12,455 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] ! multithreaded || ((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd3 >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd3 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd3 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd3) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd3) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd3) + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$r_buff1_thd3 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd3 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd3 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:02:12,456 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] ! multithreaded || ((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd3 >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd3 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd3 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd3) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd3) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd3) + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$r_buff1_thd3 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd3 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd3 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:02:12,456 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] ! multithreaded || ((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd3 >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd3 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd3 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd3) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd3) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd3) + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$r_buff1_thd3 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd3 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd3 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd3 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:02:12,456 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:02:12,456 INFO L106 edCorrectnessWitness]: ghost_update [L858-L858] multithreaded = 1; [2024-06-28 00:02:12,502 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:02:12,844 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:02:12,864 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:02:13,024 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:02:13,055 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:02:13,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13 WrapperNode [2024-06-28 00:02:13,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:02:13,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:02:13,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:02:13,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:02:13,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13" (1/1) ... [2024-06-28 00:02:13,095 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13" (1/1) ... [2024-06-28 00:02:13,141 INFO L138 Inliner]: procedures = 175, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 197 [2024-06-28 00:02:13,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:02:13,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:02:13,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:02:13,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:02:13,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13" (1/1) ... [2024-06-28 00:02:13,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13" (1/1) ... [2024-06-28 00:02:13,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13" (1/1) ... [2024-06-28 00:02:13,244 INFO L175 MemorySlicer]: Split 28 memory accesses to 2 slices as follows [2, 26]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 6 writes are split as follows [0, 6]. [2024-06-28 00:02:13,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13" (1/1) ... [2024-06-28 00:02:13,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13" (1/1) ... [2024-06-28 00:02:13,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13" (1/1) ... [2024-06-28 00:02:13,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13" (1/1) ... [2024-06-28 00:02:13,275 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13" (1/1) ... [2024-06-28 00:02:13,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13" (1/1) ... [2024-06-28 00:02:13,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:02:13,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:02:13,287 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:02:13,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:02:13,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13" (1/1) ... [2024-06-28 00:02:13,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:02:13,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:02:13,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 00:02:13,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 00:02:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 00:02:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 00:02:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 00:02:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 00:02:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:02:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:02:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:02:13,369 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:02:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:02:13,370 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:02:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:02:13,370 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:02:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:02:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 00:02:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:02:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:02:13,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:02:13,374 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:02:13,525 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:02:13,527 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:02:13,922 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:02:13,922 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:02:14,195 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:02:14,196 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:02:14,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:02:14 BoogieIcfgContainer [2024-06-28 00:02:14,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:02:14,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:02:14,199 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:02:14,202 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:02:14,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:02:10" (1/4) ... [2024-06-28 00:02:14,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452f1fe5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:02:14, skipping insertion in model container [2024-06-28 00:02:14,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:02:12" (2/4) ... [2024-06-28 00:02:14,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452f1fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:02:14, skipping insertion in model container [2024-06-28 00:02:14,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:13" (3/4) ... [2024-06-28 00:02:14,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452f1fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:02:14, skipping insertion in model container [2024-06-28 00:02:14,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:02:14" (4/4) ... [2024-06-28 00:02:14,207 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi006_power.opt.i [2024-06-28 00:02:14,222 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:02:14,223 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 00:02:14,223 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:02:14,277 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:02:14,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 00:02:14,332 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-28 00:02:14,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:02:14,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:02:14,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 00:02:14,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-28 00:02:14,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:02:14,353 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;@69628b0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:02:14,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 00:02:14,356 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:02:14,357 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:02:14,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:02:14,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:14,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:02:14,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:14,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:14,362 INFO L85 PathProgramCache]: Analyzing trace with hash 741315346, now seen corresponding path program 1 times [2024-06-28 00:02:14,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:14,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645219400] [2024-06-28 00:02:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:14,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:14,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:14,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645219400] [2024-06-28 00:02:14,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645219400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:14,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:14,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:02:14,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767085046] [2024-06-28 00:02:14,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:14,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:02:14,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:15,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:02:15,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:02:15,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-28 00:02:15,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:15,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:15,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-28 00:02:15,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:15,349 INFO L124 PetriNetUnfolderBase]: 225/420 cut-off events. [2024-06-28 00:02:15,350 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-28 00:02:15,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 420 events. 225/420 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2195 event pairs, 90 based on Foata normal form. 9/402 useless extension candidates. Maximal degree in co-relation 812. Up to 235 conditions per place. [2024-06-28 00:02:15,357 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 22 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-06-28 00:02:15,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 129 flow [2024-06-28 00:02:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:02:15,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:02:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-06-28 00:02:15,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 00:02:15,369 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 72 transitions. [2024-06-28 00:02:15,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 129 flow [2024-06-28 00:02:15,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 126 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:02:15,376 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 76 flow [2024-06-28 00:02:15,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-28 00:02:15,380 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-06-28 00:02:15,381 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 76 flow [2024-06-28 00:02:15,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:15,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:15,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:15,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:02:15,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:15,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:15,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1094181004, now seen corresponding path program 1 times [2024-06-28 00:02:15,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:15,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21775614] [2024-06-28 00:02:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:15,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:15,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:15,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21775614] [2024-06-28 00:02:15,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21775614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:15,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:15,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:02:15,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621660638] [2024-06-28 00:02:15,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:15,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:02:15,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:15,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:02:15,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:02:15,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-28 00:02:15,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:15,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:15,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-28 00:02:15,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:16,032 INFO L124 PetriNetUnfolderBase]: 222/463 cut-off events. [2024-06-28 00:02:16,033 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-06-28 00:02:16,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 463 events. 222/463 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2320 event pairs, 101 based on Foata normal form. 1/450 useless extension candidates. Maximal degree in co-relation 913. Up to 356 conditions per place. [2024-06-28 00:02:16,039 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 28 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2024-06-28 00:02:16,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 185 flow [2024-06-28 00:02:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:02:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:02:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-28 00:02:16,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 00:02:16,043 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 76 flow. Second operand 4 states and 96 transitions. [2024-06-28 00:02:16,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 185 flow [2024-06-28 00:02:16,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:16,046 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 117 flow [2024-06-28 00:02:16,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 00:02:16,049 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-28 00:02:16,050 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 117 flow [2024-06-28 00:02:16,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:16,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:16,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:16,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:02:16,056 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:16,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:16,059 INFO L85 PathProgramCache]: Analyzing trace with hash -440125664, now seen corresponding path program 1 times [2024-06-28 00:02:16,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:16,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251176238] [2024-06-28 00:02:16,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:16,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:16,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:16,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251176238] [2024-06-28 00:02:16,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251176238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:16,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:16,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:02:16,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862061310] [2024-06-28 00:02:16,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:16,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:02:16,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:16,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:02:16,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:02:16,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-28 00:02:16,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:16,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:16,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-28 00:02:16,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:17,091 INFO L124 PetriNetUnfolderBase]: 217/452 cut-off events. [2024-06-28 00:02:17,092 INFO L125 PetriNetUnfolderBase]: For 132/144 co-relation queries the response was YES. [2024-06-28 00:02:17,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069 conditions, 452 events. 217/452 cut-off events. For 132/144 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2289 event pairs, 100 based on Foata normal form. 4/444 useless extension candidates. Maximal degree in co-relation 1055. Up to 343 conditions per place. [2024-06-28 00:02:17,095 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 30 selfloop transitions, 9 changer transitions 0/51 dead transitions. [2024-06-28 00:02:17,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 231 flow [2024-06-28 00:02:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:02:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:02:17,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 00:02:17,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 00:02:17,098 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 117 flow. Second operand 5 states and 115 transitions. [2024-06-28 00:02:17,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 231 flow [2024-06-28 00:02:17,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 231 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 00:02:17,100 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 152 flow [2024-06-28 00:02:17,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-28 00:02:17,101 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-06-28 00:02:17,101 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 152 flow [2024-06-28 00:02:17,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:17,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:17,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:17,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:02:17,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:17,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:17,102 INFO L85 PathProgramCache]: Analyzing trace with hash -771387125, now seen corresponding path program 1 times [2024-06-28 00:02:17,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:17,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511238424] [2024-06-28 00:02:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:17,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:17,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:17,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511238424] [2024-06-28 00:02:17,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511238424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:17,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:17,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:17,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081488715] [2024-06-28 00:02:17,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:17,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:17,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:17,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:17,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:17,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:02:17,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:17,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:17,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:02:17,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:18,042 INFO L124 PetriNetUnfolderBase]: 247/494 cut-off events. [2024-06-28 00:02:18,043 INFO L125 PetriNetUnfolderBase]: For 384/396 co-relation queries the response was YES. [2024-06-28 00:02:18,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 494 events. 247/494 cut-off events. For 384/396 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2608 event pairs, 146 based on Foata normal form. 4/482 useless extension candidates. Maximal degree in co-relation 1323. Up to 361 conditions per place. [2024-06-28 00:02:18,046 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 38 selfloop transitions, 14 changer transitions 0/63 dead transitions. [2024-06-28 00:02:18,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 330 flow [2024-06-28 00:02:18,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:02:18,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:02:18,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 00:02:18,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 00:02:18,048 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 152 flow. Second operand 6 states and 133 transitions. [2024-06-28 00:02:18,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 330 flow [2024-06-28 00:02:18,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 309 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 00:02:18,051 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 212 flow [2024-06-28 00:02:18,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-28 00:02:18,051 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-06-28 00:02:18,052 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 212 flow [2024-06-28 00:02:18,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:18,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:18,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:18,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:02:18,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:18,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:18,053 INFO L85 PathProgramCache]: Analyzing trace with hash -811934875, now seen corresponding path program 2 times [2024-06-28 00:02:18,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:18,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945466346] [2024-06-28 00:02:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:18,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:18,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:18,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945466346] [2024-06-28 00:02:18,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945466346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:18,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:18,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:18,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691985210] [2024-06-28 00:02:18,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:18,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:18,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:18,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:18,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:18,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:02:18,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:18,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:18,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:02:18,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:18,706 INFO L124 PetriNetUnfolderBase]: 277/564 cut-off events. [2024-06-28 00:02:18,707 INFO L125 PetriNetUnfolderBase]: For 733/747 co-relation queries the response was YES. [2024-06-28 00:02:18,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1701 conditions, 564 events. 277/564 cut-off events. For 733/747 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3003 event pairs, 42 based on Foata normal form. 4/551 useless extension candidates. Maximal degree in co-relation 1679. Up to 359 conditions per place. [2024-06-28 00:02:18,712 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 46 selfloop transitions, 20 changer transitions 0/77 dead transitions. [2024-06-28 00:02:18,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 465 flow [2024-06-28 00:02:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:02:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:02:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 00:02:18,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 00:02:18,717 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 212 flow. Second operand 6 states and 140 transitions. [2024-06-28 00:02:18,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 465 flow [2024-06-28 00:02:18,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 438 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-28 00:02:18,725 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 326 flow [2024-06-28 00:02:18,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-06-28 00:02:18,727 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-06-28 00:02:18,727 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 326 flow [2024-06-28 00:02:18,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:18,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:18,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:18,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:02:18,728 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:18,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash -759006965, now seen corresponding path program 3 times [2024-06-28 00:02:18,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:18,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477008657] [2024-06-28 00:02:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:18,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:19,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:19,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477008657] [2024-06-28 00:02:19,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477008657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:19,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:19,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:02:19,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851231548] [2024-06-28 00:02:19,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:19,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:02:19,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:19,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:02:19,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:02:19,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-28 00:02:19,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 326 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:19,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:19,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-28 00:02:19,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:19,728 INFO L124 PetriNetUnfolderBase]: 353/712 cut-off events. [2024-06-28 00:02:19,728 INFO L125 PetriNetUnfolderBase]: For 1195/1203 co-relation queries the response was YES. [2024-06-28 00:02:19,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2241 conditions, 712 events. 353/712 cut-off events. For 1195/1203 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4146 event pairs, 95 based on Foata normal form. 18/693 useless extension candidates. Maximal degree in co-relation 2216. Up to 238 conditions per place. [2024-06-28 00:02:19,734 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 40 selfloop transitions, 18 changer transitions 0/70 dead transitions. [2024-06-28 00:02:19,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 506 flow [2024-06-28 00:02:19,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:02:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:02:19,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-28 00:02:19,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2024-06-28 00:02:19,735 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 326 flow. Second operand 5 states and 113 transitions. [2024-06-28 00:02:19,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 506 flow [2024-06-28 00:02:19,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 486 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:19,740 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 391 flow [2024-06-28 00:02:19,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-06-28 00:02:19,741 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2024-06-28 00:02:19,741 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 391 flow [2024-06-28 00:02:19,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:19,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:19,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:19,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:02:19,742 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:19,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:19,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1339482017, now seen corresponding path program 1 times [2024-06-28 00:02:19,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:19,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289513310] [2024-06-28 00:02:19,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:19,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:20,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:20,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289513310] [2024-06-28 00:02:20,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289513310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:20,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:20,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:20,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667347843] [2024-06-28 00:02:20,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:20,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:20,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:20,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:20,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:20,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-28 00:02:20,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 391 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:20,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:20,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-28 00:02:20,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:20,847 INFO L124 PetriNetUnfolderBase]: 365/784 cut-off events. [2024-06-28 00:02:20,848 INFO L125 PetriNetUnfolderBase]: For 1573/1587 co-relation queries the response was YES. [2024-06-28 00:02:20,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2596 conditions, 784 events. 365/784 cut-off events. For 1573/1587 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4689 event pairs, 90 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 2569. Up to 477 conditions per place. [2024-06-28 00:02:20,854 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 42 selfloop transitions, 23 changer transitions 0/77 dead transitions. [2024-06-28 00:02:20,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 581 flow [2024-06-28 00:02:20,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:02:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:02:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 00:02:20,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 00:02:20,855 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 391 flow. Second operand 6 states and 140 transitions. [2024-06-28 00:02:20,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 581 flow [2024-06-28 00:02:20,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 556 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:20,861 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 435 flow [2024-06-28 00:02:20,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=435, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-06-28 00:02:20,862 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2024-06-28 00:02:20,862 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 435 flow [2024-06-28 00:02:20,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:20,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:20,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:20,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:02:20,863 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:20,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:20,863 INFO L85 PathProgramCache]: Analyzing trace with hash -337967263, now seen corresponding path program 2 times [2024-06-28 00:02:20,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:20,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579101964] [2024-06-28 00:02:20,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:20,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:22,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:22,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579101964] [2024-06-28 00:02:22,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579101964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:22,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:22,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:22,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122979571] [2024-06-28 00:02:22,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:22,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:22,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:22,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:22,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:22,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-28 00:02:22,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:22,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:22,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-28 00:02:22,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:22,788 INFO L124 PetriNetUnfolderBase]: 357/756 cut-off events. [2024-06-28 00:02:22,789 INFO L125 PetriNetUnfolderBase]: For 1681/1689 co-relation queries the response was YES. [2024-06-28 00:02:22,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2567 conditions, 756 events. 357/756 cut-off events. For 1681/1689 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4484 event pairs, 102 based on Foata normal form. 4/723 useless extension candidates. Maximal degree in co-relation 2539. Up to 449 conditions per place. [2024-06-28 00:02:22,794 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 38 selfloop transitions, 22 changer transitions 0/72 dead transitions. [2024-06-28 00:02:22,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 587 flow [2024-06-28 00:02:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:02:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:02:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 00:02:22,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 00:02:22,796 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 435 flow. Second operand 6 states and 133 transitions. [2024-06-28 00:02:22,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 587 flow [2024-06-28 00:02:22,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 540 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 00:02:22,801 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 436 flow [2024-06-28 00:02:22,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=436, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2024-06-28 00:02:22,802 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-06-28 00:02:22,802 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 436 flow [2024-06-28 00:02:22,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:22,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:22,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:22,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:02:22,803 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:22,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:22,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1808926974, now seen corresponding path program 1 times [2024-06-28 00:02:22,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:22,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938771454] [2024-06-28 00:02:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:22,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:23,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:23,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938771454] [2024-06-28 00:02:23,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938771454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:23,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:23,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:23,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80506715] [2024-06-28 00:02:23,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:23,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:23,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:23,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:23,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:23,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:02:23,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 436 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:23,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:23,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:02:23,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:23,484 INFO L124 PetriNetUnfolderBase]: 344/717 cut-off events. [2024-06-28 00:02:23,484 INFO L125 PetriNetUnfolderBase]: For 1771/1785 co-relation queries the response was YES. [2024-06-28 00:02:23,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2475 conditions, 717 events. 344/717 cut-off events. For 1771/1785 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4140 event pairs, 149 based on Foata normal form. 4/694 useless extension candidates. Maximal degree in co-relation 2445. Up to 535 conditions per place. [2024-06-28 00:02:23,490 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 55 selfloop transitions, 10 changer transitions 1/77 dead transitions. [2024-06-28 00:02:23,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 77 transitions, 637 flow [2024-06-28 00:02:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-28 00:02:23,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 00:02:23,491 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 436 flow. Second operand 7 states and 144 transitions. [2024-06-28 00:02:23,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 77 transitions, 637 flow [2024-06-28 00:02:23,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 570 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:23,498 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 419 flow [2024-06-28 00:02:23,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=419, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-06-28 00:02:23,499 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-06-28 00:02:23,499 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 419 flow [2024-06-28 00:02:23,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:23,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:23,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:23,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:02:23,503 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:23,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:23,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1895145592, now seen corresponding path program 2 times [2024-06-28 00:02:23,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:23,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302721480] [2024-06-28 00:02:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:23,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:24,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302721480] [2024-06-28 00:02:24,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302721480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:24,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:24,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:24,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732350942] [2024-06-28 00:02:24,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:24,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:24,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:24,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:24,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:24,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:02:24,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 419 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:24,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:24,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:02:24,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:24,362 INFO L124 PetriNetUnfolderBase]: 319/640 cut-off events. [2024-06-28 00:02:24,362 INFO L125 PetriNetUnfolderBase]: For 1789/1797 co-relation queries the response was YES. [2024-06-28 00:02:24,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2216 conditions, 640 events. 319/640 cut-off events. For 1789/1797 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3634 event pairs, 90 based on Foata normal form. 6/616 useless extension candidates. Maximal degree in co-relation 2184. Up to 249 conditions per place. [2024-06-28 00:02:24,367 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 40 selfloop transitions, 21 changer transitions 0/72 dead transitions. [2024-06-28 00:02:24,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 595 flow [2024-06-28 00:02:24,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:02:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:02:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-28 00:02:24,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-28 00:02:24,369 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 419 flow. Second operand 6 states and 122 transitions. [2024-06-28 00:02:24,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 595 flow [2024-06-28 00:02:24,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 72 transitions, 562 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 00:02:24,374 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 458 flow [2024-06-28 00:02:24,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=458, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2024-06-28 00:02:24,375 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2024-06-28 00:02:24,376 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 458 flow [2024-06-28 00:02:24,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:24,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:24,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:24,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:02:24,376 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:24,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2136965280, now seen corresponding path program 1 times [2024-06-28 00:02:24,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:24,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267671344] [2024-06-28 00:02:24,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:24,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:25,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:25,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267671344] [2024-06-28 00:02:25,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267671344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:25,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:25,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:25,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328310615] [2024-06-28 00:02:25,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:25,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:25,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:25,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:25,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:25,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:02:25,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 458 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:25,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:25,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:02:25,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:25,387 INFO L124 PetriNetUnfolderBase]: 363/770 cut-off events. [2024-06-28 00:02:25,387 INFO L125 PetriNetUnfolderBase]: For 2298/2312 co-relation queries the response was YES. [2024-06-28 00:02:25,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2553 conditions, 770 events. 363/770 cut-off events. For 2298/2312 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4621 event pairs, 60 based on Foata normal form. 14/758 useless extension candidates. Maximal degree in co-relation 2521. Up to 282 conditions per place. [2024-06-28 00:02:25,393 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 57 selfloop transitions, 22 changer transitions 0/90 dead transitions. [2024-06-28 00:02:25,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 90 transitions, 714 flow [2024-06-28 00:02:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:25,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-28 00:02:25,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 00:02:25,394 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 458 flow. Second operand 8 states and 172 transitions. [2024-06-28 00:02:25,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 90 transitions, 714 flow [2024-06-28 00:02:25,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 90 transitions, 664 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 00:02:25,401 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 482 flow [2024-06-28 00:02:25,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=482, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2024-06-28 00:02:25,402 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-06-28 00:02:25,402 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 482 flow [2024-06-28 00:02:25,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:25,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:25,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:25,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:02:25,403 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:25,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:25,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1861697694, now seen corresponding path program 2 times [2024-06-28 00:02:25,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:25,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027036086] [2024-06-28 00:02:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:25,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:26,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:26,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027036086] [2024-06-28 00:02:26,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027036086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:26,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:26,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:26,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942002638] [2024-06-28 00:02:26,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:26,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:26,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:26,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:26,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:26,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-28 00:02:26,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 482 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:26,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:26,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-28 00:02:26,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:26,506 INFO L124 PetriNetUnfolderBase]: 419/884 cut-off events. [2024-06-28 00:02:26,507 INFO L125 PetriNetUnfolderBase]: For 3335/3343 co-relation queries the response was YES. [2024-06-28 00:02:26,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 884 events. 419/884 cut-off events. For 3335/3343 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5729 event pairs, 104 based on Foata normal form. 12/860 useless extension candidates. Maximal degree in co-relation 2903. Up to 234 conditions per place. [2024-06-28 00:02:26,512 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 43 selfloop transitions, 12 changer transitions 14/81 dead transitions. [2024-06-28 00:02:26,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 81 transitions, 706 flow [2024-06-28 00:02:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:02:26,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:02:26,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 00:02:26,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 00:02:26,513 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 482 flow. Second operand 6 states and 133 transitions. [2024-06-28 00:02:26,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 81 transitions, 706 flow [2024-06-28 00:02:26,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 640 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:26,523 INFO L231 Difference]: Finished difference. Result has 79 places, 55 transitions, 361 flow [2024-06-28 00:02:26,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=361, PETRI_PLACES=79, PETRI_TRANSITIONS=55} [2024-06-28 00:02:26,524 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-06-28 00:02:26,524 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 55 transitions, 361 flow [2024-06-28 00:02:26,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:26,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:26,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:26,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:02:26,524 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:26,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:26,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1512838542, now seen corresponding path program 3 times [2024-06-28 00:02:26,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:26,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052369830] [2024-06-28 00:02:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:26,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:27,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:27,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052369830] [2024-06-28 00:02:27,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052369830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:27,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:27,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943344882] [2024-06-28 00:02:27,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:27,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:27,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:27,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-28 00:02:27,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 55 transitions, 361 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:27,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:27,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-28 00:02:27,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:27,377 INFO L124 PetriNetUnfolderBase]: 341/734 cut-off events. [2024-06-28 00:02:27,378 INFO L125 PetriNetUnfolderBase]: For 3213/3221 co-relation queries the response was YES. [2024-06-28 00:02:27,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2333 conditions, 734 events. 341/734 cut-off events. For 3213/3221 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4562 event pairs, 142 based on Foata normal form. 12/708 useless extension candidates. Maximal degree in co-relation 2303. Up to 263 conditions per place. [2024-06-28 00:02:27,382 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 38 selfloop transitions, 11 changer transitions 8/69 dead transitions. [2024-06-28 00:02:27,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 69 transitions, 525 flow [2024-06-28 00:02:27,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:02:27,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:02:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 00:02:27,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 00:02:27,384 INFO L175 Difference]: Start difference. First operand has 79 places, 55 transitions, 361 flow. Second operand 6 states and 132 transitions. [2024-06-28 00:02:27,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 69 transitions, 525 flow [2024-06-28 00:02:27,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 69 transitions, 486 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:27,391 INFO L231 Difference]: Finished difference. Result has 74 places, 49 transitions, 287 flow [2024-06-28 00:02:27,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=74, PETRI_TRANSITIONS=49} [2024-06-28 00:02:27,392 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-06-28 00:02:27,392 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 49 transitions, 287 flow [2024-06-28 00:02:27,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:27,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:27,393 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] [2024-06-28 00:02:27,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:02:27,393 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:27,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:27,393 INFO L85 PathProgramCache]: Analyzing trace with hash 539428399, now seen corresponding path program 1 times [2024-06-28 00:02:27,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:27,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122914294] [2024-06-28 00:02:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:27,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:27,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:27,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122914294] [2024-06-28 00:02:27,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122914294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:27,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:27,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:27,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043760143] [2024-06-28 00:02:27,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:27,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:27,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:27,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:27,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:27,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:02:27,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 49 transitions, 287 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:27,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:27,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:02:27,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:28,097 INFO L124 PetriNetUnfolderBase]: 367/823 cut-off events. [2024-06-28 00:02:28,098 INFO L125 PetriNetUnfolderBase]: For 1955/1969 co-relation queries the response was YES. [2024-06-28 00:02:28,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2504 conditions, 823 events. 367/823 cut-off events. For 1955/1969 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5270 event pairs, 98 based on Foata normal form. 6/799 useless extension candidates. Maximal degree in co-relation 2476. Up to 341 conditions per place. [2024-06-28 00:02:28,103 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 40 selfloop transitions, 21 changer transitions 5/77 dead transitions. [2024-06-28 00:02:28,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 543 flow [2024-06-28 00:02:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:02:28,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:02:28,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 00:02:28,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5436507936507936 [2024-06-28 00:02:28,105 INFO L175 Difference]: Start difference. First operand has 74 places, 49 transitions, 287 flow. Second operand 6 states and 137 transitions. [2024-06-28 00:02:28,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 543 flow [2024-06-28 00:02:28,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 480 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:28,110 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 349 flow [2024-06-28 00:02:28,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=349, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2024-06-28 00:02:28,111 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-06-28 00:02:28,111 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 349 flow [2024-06-28 00:02:28,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:28,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:28,112 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] [2024-06-28 00:02:28,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:02:28,112 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:28,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:28,112 INFO L85 PathProgramCache]: Analyzing trace with hash 484238443, now seen corresponding path program 2 times [2024-06-28 00:02:28,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:28,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422470371] [2024-06-28 00:02:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:28,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:28,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:28,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422470371] [2024-06-28 00:02:28,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422470371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:28,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:28,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:28,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499012734] [2024-06-28 00:02:28,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:28,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:28,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:28,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:28,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:28,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:02:28,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 349 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:28,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:28,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:02:28,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:29,077 INFO L124 PetriNetUnfolderBase]: 375/869 cut-off events. [2024-06-28 00:02:29,092 INFO L125 PetriNetUnfolderBase]: For 2172/2204 co-relation queries the response was YES. [2024-06-28 00:02:29,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2618 conditions, 869 events. 375/869 cut-off events. For 2172/2204 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5899 event pairs, 144 based on Foata normal form. 6/832 useless extension candidates. Maximal degree in co-relation 2588. Up to 333 conditions per place. [2024-06-28 00:02:29,098 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 32 selfloop transitions, 15 changer transitions 12/70 dead transitions. [2024-06-28 00:02:29,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 527 flow [2024-06-28 00:02:29,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:02:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:02:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-28 00:02:29,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-06-28 00:02:29,114 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 349 flow. Second operand 5 states and 114 transitions. [2024-06-28 00:02:29,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 527 flow [2024-06-28 00:02:29,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 70 transitions, 505 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:29,119 INFO L231 Difference]: Finished difference. Result has 77 places, 49 transitions, 330 flow [2024-06-28 00:02:29,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=77, PETRI_TRANSITIONS=49} [2024-06-28 00:02:29,120 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-06-28 00:02:29,120 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 49 transitions, 330 flow [2024-06-28 00:02:29,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:29,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:29,120 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] [2024-06-28 00:02:29,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:02:29,121 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:29,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:29,121 INFO L85 PathProgramCache]: Analyzing trace with hash -586602641, now seen corresponding path program 3 times [2024-06-28 00:02:29,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:29,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555679212] [2024-06-28 00:02:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:29,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:29,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555679212] [2024-06-28 00:02:29,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555679212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:29,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:29,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:29,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530067734] [2024-06-28 00:02:29,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:29,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:29,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:29,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:29,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:29,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:02:29,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 49 transitions, 330 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:29,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:29,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:02:29,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:30,101 INFO L124 PetriNetUnfolderBase]: 277/660 cut-off events. [2024-06-28 00:02:30,101 INFO L125 PetriNetUnfolderBase]: For 2012/2036 co-relation queries the response was YES. [2024-06-28 00:02:30,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1974 conditions, 660 events. 277/660 cut-off events. For 2012/2036 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4079 event pairs, 76 based on Foata normal form. 6/647 useless extension candidates. Maximal degree in co-relation 1942. Up to 276 conditions per place. [2024-06-28 00:02:30,106 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 30 selfloop transitions, 9 changer transitions 21/71 dead transitions. [2024-06-28 00:02:30,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 71 transitions, 502 flow [2024-06-28 00:02:30,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:30,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 00:02:30,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 00:02:30,108 INFO L175 Difference]: Start difference. First operand has 77 places, 49 transitions, 330 flow. Second operand 8 states and 163 transitions. [2024-06-28 00:02:30,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 71 transitions, 502 flow [2024-06-28 00:02:30,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 443 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:02:30,115 INFO L231 Difference]: Finished difference. Result has 75 places, 42 transitions, 235 flow [2024-06-28 00:02:30,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=235, PETRI_PLACES=75, PETRI_TRANSITIONS=42} [2024-06-28 00:02:30,116 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-28 00:02:30,116 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 42 transitions, 235 flow [2024-06-28 00:02:30,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:30,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:30,117 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] [2024-06-28 00:02:30,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:02:30,117 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:30,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:30,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1125712555, now seen corresponding path program 4 times [2024-06-28 00:02:30,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:30,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480678858] [2024-06-28 00:02:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:30,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:31,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:31,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480678858] [2024-06-28 00:02:31,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480678858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:31,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:31,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:31,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596732424] [2024-06-28 00:02:31,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:31,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:31,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:31,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:31,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:31,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-28 00:02:31,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 42 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:31,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:31,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-28 00:02:31,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:31,523 INFO L124 PetriNetUnfolderBase]: 141/332 cut-off events. [2024-06-28 00:02:31,523 INFO L125 PetriNetUnfolderBase]: For 1107/1111 co-relation queries the response was YES. [2024-06-28 00:02:31,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 332 events. 141/332 cut-off events. For 1107/1111 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1737 event pairs, 52 based on Foata normal form. 12/325 useless extension candidates. Maximal degree in co-relation 905. Up to 110 conditions per place. [2024-06-28 00:02:31,525 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 26 selfloop transitions, 9 changer transitions 6/53 dead transitions. [2024-06-28 00:02:31,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 53 transitions, 345 flow [2024-06-28 00:02:31,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 00:02:31,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48639455782312924 [2024-06-28 00:02:31,527 INFO L175 Difference]: Start difference. First operand has 75 places, 42 transitions, 235 flow. Second operand 7 states and 143 transitions. [2024-06-28 00:02:31,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 53 transitions, 345 flow [2024-06-28 00:02:31,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 53 transitions, 304 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 00:02:31,529 INFO L231 Difference]: Finished difference. Result has 67 places, 38 transitions, 190 flow [2024-06-28 00:02:31,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=67, PETRI_TRANSITIONS=38} [2024-06-28 00:02:31,530 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2024-06-28 00:02:31,530 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 38 transitions, 190 flow [2024-06-28 00:02:31,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:31,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:31,530 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] [2024-06-28 00:02:31,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:02:31,531 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:31,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:31,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2048216993, now seen corresponding path program 1 times [2024-06-28 00:02:31,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:31,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403223548] [2024-06-28 00:02:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:31,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:32,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:32,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403223548] [2024-06-28 00:02:32,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403223548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:32,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:32,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:32,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410404896] [2024-06-28 00:02:32,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:32,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:32,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:32,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:32,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:32,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-28 00:02:32,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 38 transitions, 190 flow. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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) [2024-06-28 00:02:32,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:32,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-28 00:02:32,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:32,969 INFO L124 PetriNetUnfolderBase]: 103/278 cut-off events. [2024-06-28 00:02:32,970 INFO L125 PetriNetUnfolderBase]: For 768/772 co-relation queries the response was YES. [2024-06-28 00:02:32,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744 conditions, 278 events. 103/278 cut-off events. For 768/772 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1411 event pairs, 44 based on Foata normal form. 8/273 useless extension candidates. Maximal degree in co-relation 720. Up to 83 conditions per place. [2024-06-28 00:02:32,971 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 17 selfloop transitions, 5 changer transitions 16/49 dead transitions. [2024-06-28 00:02:32,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 49 transitions, 288 flow [2024-06-28 00:02:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:32,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 00:02:32,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 00:02:32,973 INFO L175 Difference]: Start difference. First operand has 67 places, 38 transitions, 190 flow. Second operand 8 states and 147 transitions. [2024-06-28 00:02:32,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 49 transitions, 288 flow [2024-06-28 00:02:32,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 49 transitions, 251 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:02:32,975 INFO L231 Difference]: Finished difference. Result has 64 places, 31 transitions, 116 flow [2024-06-28 00:02:32,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=116, PETRI_PLACES=64, PETRI_TRANSITIONS=31} [2024-06-28 00:02:32,976 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-06-28 00:02:32,976 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 31 transitions, 116 flow [2024-06-28 00:02:32,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 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) [2024-06-28 00:02:32,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:32,976 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] [2024-06-28 00:02:32,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:02:32,977 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:02:32,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:32,977 INFO L85 PathProgramCache]: Analyzing trace with hash -935671261, now seen corresponding path program 2 times [2024-06-28 00:02:32,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:32,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772829346] [2024-06-28 00:02:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:32,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:34,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:34,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772829346] [2024-06-28 00:02:34,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772829346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:34,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:34,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:34,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736157068] [2024-06-28 00:02:34,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:34,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:34,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:34,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:34,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:34,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-06-28 00:02:34,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 31 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:34,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:34,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-06-28 00:02:34,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:34,365 INFO L124 PetriNetUnfolderBase]: 35/114 cut-off events. [2024-06-28 00:02:34,365 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-06-28 00:02:34,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 114 events. 35/114 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 377 event pairs, 0 based on Foata normal form. 8/122 useless extension candidates. Maximal degree in co-relation 245. Up to 40 conditions per place. [2024-06-28 00:02:34,366 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2024-06-28 00:02:34,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 37 transitions, 166 flow [2024-06-28 00:02:34,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:34,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:34,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 00:02:34,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445578231292517 [2024-06-28 00:02:34,367 INFO L175 Difference]: Start difference. First operand has 64 places, 31 transitions, 116 flow. Second operand 7 states and 131 transitions. [2024-06-28 00:02:34,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 37 transitions, 166 flow [2024-06-28 00:02:34,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 37 transitions, 136 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-28 00:02:34,368 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-06-28 00:02:34,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-06-28 00:02:34,368 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-06-28 00:02:34,369 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-06-28 00:02:34,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:34,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-28 00:02:34,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-28 00:02:34,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-28 00:02:34,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-28 00:02:34,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-28 00:02:34,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-28 00:02:34,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:02:34,373 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 2, 2, 1, 1, 1] [2024-06-28 00:02:34,375 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:02:34,375 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:02:34,378 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-28 00:02:34,378 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-28 00:02:34,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:02:34 BasicIcfg [2024-06-28 00:02:34,379 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:02:34,379 INFO L158 Benchmark]: Toolchain (without parser) took 21964.99ms. Allocated memory was 226.5MB in the beginning and 1.2GB in the end (delta: 987.8MB). Free memory was 154.0MB in the beginning and 1.1GB in the end (delta: -955.9MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2024-06-28 00:02:34,379 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 123.7MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:02:34,379 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 226.5MB. Free memory is still 201.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:02:34,380 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.12ms. Allocated memory is still 226.5MB. Free memory was 153.7MB in the beginning and 121.8MB in the end (delta: 31.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-28 00:02:34,380 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.75ms. Allocated memory is still 226.5MB. Free memory was 121.5MB in the beginning and 118.1MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:02:34,380 INFO L158 Benchmark]: Boogie Preprocessor took 134.73ms. Allocated memory is still 226.5MB. Free memory was 118.1MB in the beginning and 193.1MB in the end (delta: -75.0MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2024-06-28 00:02:34,380 INFO L158 Benchmark]: RCFGBuilder took 909.34ms. Allocated memory is still 226.5MB. Free memory was 193.1MB in the beginning and 177.1MB in the end (delta: 16.0MB). Peak memory consumption was 112.5MB. Max. memory is 16.1GB. [2024-06-28 00:02:34,381 INFO L158 Benchmark]: TraceAbstraction took 20180.15ms. Allocated memory was 226.5MB in the beginning and 1.2GB in the end (delta: 987.8MB). Free memory was 176.0MB in the beginning and 1.1GB in the end (delta: -933.9MB). Peak memory consumption was 53.8MB. Max. memory is 16.1GB. [2024-06-28 00:02:34,381 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.10ms. Allocated memory is still 123.7MB. Free memory is still 90.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 226.5MB. Free memory is still 201.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.12ms. Allocated memory is still 226.5MB. Free memory was 153.7MB in the beginning and 121.8MB in the end (delta: 31.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.75ms. Allocated memory is still 226.5MB. Free memory was 121.5MB in the beginning and 118.1MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 134.73ms. Allocated memory is still 226.5MB. Free memory was 118.1MB in the beginning and 193.1MB in the end (delta: -75.0MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * RCFGBuilder took 909.34ms. Allocated memory is still 226.5MB. Free memory was 193.1MB in the beginning and 177.1MB in the end (delta: 16.0MB). Peak memory consumption was 112.5MB. Max. memory is 16.1GB. * TraceAbstraction took 20180.15ms. Allocated memory was 226.5MB in the beginning and 1.2GB in the end (delta: 987.8MB). Free memory was 176.0MB in the beginning and 1.1GB in the end (delta: -933.9MB). Peak memory consumption was 53.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 860]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 862]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 863]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 67 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.1s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 316 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 312 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2253 IncrementalHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 9 mSDtfsCounter, 2253 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=482occurred in iteration=11, InterpolantAutomatonStates: 115, 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, 0.4s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 349 NumberOfCodeBlocks, 349 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 330 ConstructedInterpolants, 0 QuantifiedInterpolants, 7867 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:02:34,419 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