./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.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/protection/mix035_power.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/mix035_power.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix035_power.opt_rmo.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-eb4cb34-m [2024-06-21 16:45:33,196 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 16:45:33,246 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 16:45:33,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 16:45:33,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 16:45:33,278 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 16:45:33,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 16:45:33,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 16:45:33,279 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 16:45:33,279 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 16:45:33,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 16:45:33,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 16:45:33,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 16:45:33,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 16:45:33,280 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 16:45:33,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 16:45:33,280 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 16:45:33,281 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 16:45:33,281 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 16:45:33,281 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 16:45:33,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 16:45:33,285 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 16:45:33,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 16:45:33,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 16:45:33,288 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 16:45:33,288 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 16:45:33,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 16:45:33,289 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 16:45:33,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 16:45:33,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 16:45:33,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 16:45:33,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 16:45:33,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:45:33,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 16:45:33,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 16:45:33,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 16:45:33,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 16:45:33,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 16:45:33,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 16:45:33,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 16:45:33,292 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 16:45:33,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 16:45:33,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 16:45:33,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 16:45:33,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 16:45:33,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 16:45:33,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 16:45:33,505 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 16:45:33,506 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 16:45:33,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.opt.i [2024-06-21 16:45:34,593 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 16:45:34,805 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 16:45:34,806 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix035_power.opt_rmo.opt.i [2024-06-21 16:45:34,817 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e2f9c4f4/3c671d5c024945f3bebb25c252dae504/FLAG6d212180f [2024-06-21 16:45:35,168 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e2f9c4f4/3c671d5c024945f3bebb25c252dae504 [2024-06-21 16:45:35,170 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 16:45:35,170 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 16:45:35,171 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix035_power.opt_rmo.opt.yml/witness.yml [2024-06-21 16:45:35,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 16:45:35,317 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 16:45:35,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 16:45:35,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 16:45:35,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 16:45:35,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:45:35" (1/2) ... [2024-06-21 16:45:35,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb8d1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:45:35, skipping insertion in model container [2024-06-21 16:45:35,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:45:35" (1/2) ... [2024-06-21 16:45:35,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5e9779e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:45:35, skipping insertion in model container [2024-06-21 16:45:35,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:45:35" (2/2) ... [2024-06-21 16:45:35,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb8d1a2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35, skipping insertion in model container [2024-06-21 16:45:35,325 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:45:35" (2/2) ... [2024-06-21 16:45:35,325 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 16:45:35,392 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 16:45:35,394 INFO L97 edCorrectnessWitness]: Location invariant before [L844-L844] ((((((((((((((((((((! multithreaded || x$flush_delayed == (_Bool)0) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-21 16:45:35,394 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((((! multithreaded || x$flush_delayed == (_Bool)0) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-21 16:45:35,394 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] ((((((((((((((((((((! multithreaded || x$flush_delayed == (_Bool)0) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-21 16:45:35,395 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 16:45:35,395 INFO L106 edCorrectnessWitness]: ghost_update [L842-L842] multithreaded = 1; [2024-06-21 16:45:35,432 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 16:45:35,751 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:45:35,775 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 16:45:35,887 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:45:35,914 INFO L206 MainTranslator]: Completed translation [2024-06-21 16:45:35,914 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35 WrapperNode [2024-06-21 16:45:35,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 16:45:35,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 16:45:35,916 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 16:45:35,916 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 16:45:35,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35" (1/1) ... [2024-06-21 16:45:35,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35" (1/1) ... [2024-06-21 16:45:35,975 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 128 [2024-06-21 16:45:35,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 16:45:35,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 16:45:35,976 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 16:45:35,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 16:45:35,985 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35" (1/1) ... [2024-06-21 16:45:35,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35" (1/1) ... [2024-06-21 16:45:35,989 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35" (1/1) ... [2024-06-21 16:45:36,001 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-21 16:45:36,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35" (1/1) ... [2024-06-21 16:45:36,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35" (1/1) ... [2024-06-21 16:45:36,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35" (1/1) ... [2024-06-21 16:45:36,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35" (1/1) ... [2024-06-21 16:45:36,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35" (1/1) ... [2024-06-21 16:45:36,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35" (1/1) ... [2024-06-21 16:45:36,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 16:45:36,038 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 16:45:36,038 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 16:45:36,038 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 16:45:36,039 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35" (1/1) ... [2024-06-21 16:45:36,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:45:36,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:45:36,065 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) [2024-06-21 16:45:36,088 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 [2024-06-21 16:45:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 16:45:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 16:45:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 16:45:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 16:45:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 16:45:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 16:45:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 16:45:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 16:45:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 16:45:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 16:45:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 16:45:36,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 16:45:36,102 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 16:45:36,244 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 16:45:36,246 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 16:45:36,515 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 16:45:36,516 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 16:45:36,654 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 16:45:36,655 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 16:45:36,655 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:45:36 BoogieIcfgContainer [2024-06-21 16:45:36,655 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 16:45:36,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 16:45:36,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 16:45:36,660 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 16:45:36,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 04:45:35" (1/4) ... [2024-06-21 16:45:36,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227935d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:45:36, skipping insertion in model container [2024-06-21 16:45:36,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:45:35" (2/4) ... [2024-06-21 16:45:36,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227935d0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:45:36, skipping insertion in model container [2024-06-21 16:45:36,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:45:35" (3/4) ... [2024-06-21 16:45:36,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227935d0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:45:36, skipping insertion in model container [2024-06-21 16:45:36,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:45:36" (4/4) ... [2024-06-21 16:45:36,664 INFO L112 eAbstractionObserver]: Analyzing ICFG mix035_power.opt_rmo.opt.i [2024-06-21 16:45:36,676 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 16:45:36,677 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-21 16:45:36,677 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 16:45:36,718 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 16:45:36,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-21 16:45:36,798 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-21 16:45:36,798 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:45:36,802 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 64 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. [2024-06-21 16:45:36,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-21 16:45:36,805 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-21 16:45:36,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 16:45:36,823 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;@29d808e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 16:45:36,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-21 16:45:36,829 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 16:45:36,829 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 16:45:36,829 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:45:36,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:36,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 16:45:36,830 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)] === [2024-06-21 16:45:36,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:36,834 INFO L85 PathProgramCache]: Analyzing trace with hash 371757946, now seen corresponding path program 1 times [2024-06-21 16:45:36,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:36,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079753659] [2024-06-21 16:45:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:36,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:37,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:37,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079753659] [2024-06-21 16:45:37,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079753659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:37,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:37,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 16:45:37,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298092425] [2024-06-21 16:45:37,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:37,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:45:37,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:37,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:45:37,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:45:37,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 16:45:37,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-06-21 16:45:37,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:37,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 16:45:37,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:38,204 INFO L124 PetriNetUnfolderBase]: 1116/1796 cut-off events. [2024-06-21 16:45:38,204 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-21 16:45:38,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3547 conditions, 1796 events. 1116/1796 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8974 event pairs, 765 based on Foata normal form. 1/1731 useless extension candidates. Maximal degree in co-relation 3535. Up to 1676 conditions per place. [2024-06-21 16:45:38,219 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 31 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-21 16:45:38,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 171 flow [2024-06-21 16:45:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:45:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:45:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-21 16:45:38,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-06-21 16:45:38,230 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 80 transitions. [2024-06-21 16:45:38,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 171 flow [2024-06-21 16:45:38,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 16:45:38,234 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-21 16:45:38,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-21 16:45:38,239 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-21 16:45:38,240 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-21 16:45:38,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-06-21 16:45:38,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:38,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:38,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 16:45:38,241 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:38,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:38,241 INFO L85 PathProgramCache]: Analyzing trace with hash 777140057, now seen corresponding path program 1 times [2024-06-21 16:45:38,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:38,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003798246] [2024-06-21 16:45:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:38,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:38,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:38,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003798246] [2024-06-21 16:45:38,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003798246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:38,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:38,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 16:45:38,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156847793] [2024-06-21 16:45:38,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:38,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:45:38,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:38,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:45:38,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:45:38,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-21 16:45:38,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-06-21 16:45:38,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:38,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-21 16:45:38,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:39,023 INFO L124 PetriNetUnfolderBase]: 1274/1990 cut-off events. [2024-06-21 16:45:39,023 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2024-06-21 16:45:39,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4496 conditions, 1990 events. 1274/1990 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9739 event pairs, 608 based on Foata normal form. 6/1964 useless extension candidates. Maximal degree in co-relation 4484. Up to 1873 conditions per place. [2024-06-21 16:45:39,031 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 40 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-21 16:45:39,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 244 flow [2024-06-21 16:45:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:45:39,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:45:39,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-21 16:45:39,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-06-21 16:45:39,033 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 102 transitions. [2024-06-21 16:45:39,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 244 flow [2024-06-21 16:45:39,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 16:45:39,035 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 138 flow [2024-06-21 16:45:39,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-21 16:45:39,036 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-21 16:45:39,036 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 138 flow [2024-06-21 16:45:39,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-06-21 16:45:39,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:39,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:39,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 16:45:39,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:39,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:39,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1907000598, now seen corresponding path program 1 times [2024-06-21 16:45:39,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:39,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574889222] [2024-06-21 16:45:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:39,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:40,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:40,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:40,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574889222] [2024-06-21 16:45:40,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574889222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:40,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:40,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:45:40,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050034035] [2024-06-21 16:45:40,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:40,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:45:40,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:40,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:45:40,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:45:40,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-21 16:45:40,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2024-06-21 16:45:40,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:40,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-21 16:45:40,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:40,528 INFO L124 PetriNetUnfolderBase]: 1265/1973 cut-off events. [2024-06-21 16:45:40,528 INFO L125 PetriNetUnfolderBase]: For 1078/1078 co-relation queries the response was YES. [2024-06-21 16:45:40,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 1973 events. 1265/1973 cut-off events. For 1078/1078 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9651 event pairs, 445 based on Foata normal form. 6/1947 useless extension candidates. Maximal degree in co-relation 4956. Up to 1828 conditions per place. [2024-06-21 16:45:40,537 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 50 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2024-06-21 16:45:40,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 350 flow [2024-06-21 16:45:40,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:45:40,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:45:40,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-21 16:45:40,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5674603174603174 [2024-06-21 16:45:40,539 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 138 flow. Second operand 6 states and 143 transitions. [2024-06-21 16:45:40,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 350 flow [2024-06-21 16:45:40,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 69 transitions, 330 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-21 16:45:40,541 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 181 flow [2024-06-21 16:45:40,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-21 16:45:40,542 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-06-21 16:45:40,542 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 181 flow [2024-06-21 16:45:40,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2024-06-21 16:45:40,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:40,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:40,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 16:45:40,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:40,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1123968294, now seen corresponding path program 1 times [2024-06-21 16:45:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:40,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705188879] [2024-06-21 16:45:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:41,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:41,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705188879] [2024-06-21 16:45:41,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705188879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:41,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:41,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:45:41,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646231131] [2024-06-21 16:45:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:41,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:45:41,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:45:41,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:45:41,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-21 16:45:41,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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) [2024-06-21 16:45:41,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:41,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-21 16:45:41,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:41,460 INFO L124 PetriNetUnfolderBase]: 1090/1819 cut-off events. [2024-06-21 16:45:41,461 INFO L125 PetriNetUnfolderBase]: For 1770/1770 co-relation queries the response was YES. [2024-06-21 16:45:41,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 1819 events. 1090/1819 cut-off events. For 1770/1770 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9430 event pairs, 460 based on Foata normal form. 2/1813 useless extension candidates. Maximal degree in co-relation 4877. Up to 1627 conditions per place. [2024-06-21 16:45:41,469 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 42 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2024-06-21 16:45:41,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 323 flow [2024-06-21 16:45:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:45:41,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:45:41,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-06-21 16:45:41,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-06-21 16:45:41,473 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 181 flow. Second operand 5 states and 104 transitions. [2024-06-21 16:45:41,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 323 flow [2024-06-21 16:45:41,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 296 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-21 16:45:41,477 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 198 flow [2024-06-21 16:45:41,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-21 16:45:41,479 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-21 16:45:41,479 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 198 flow [2024-06-21 16:45:41,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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) [2024-06-21 16:45:41,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:41,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:41,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 16:45:41,480 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:41,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:41,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1841701687, now seen corresponding path program 1 times [2024-06-21 16:45:41,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:41,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299478699] [2024-06-21 16:45:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:41,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:42,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:42,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299478699] [2024-06-21 16:45:42,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299478699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:42,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:42,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:45:42,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088213522] [2024-06-21 16:45:42,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:42,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:45:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:42,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:45:42,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:45:42,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:45:42,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-06-21 16:45:42,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:42,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:45:42,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:42,596 INFO L124 PetriNetUnfolderBase]: 1282/2026 cut-off events. [2024-06-21 16:45:42,596 INFO L125 PetriNetUnfolderBase]: For 3106/3106 co-relation queries the response was YES. [2024-06-21 16:45:42,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6027 conditions, 2026 events. 1282/2026 cut-off events. For 3106/3106 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 10014 event pairs, 530 based on Foata normal form. 4/2017 useless extension candidates. Maximal degree in co-relation 6008. Up to 1880 conditions per place. [2024-06-21 16:45:42,605 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 51 selfloop transitions, 11 changer transitions 0/68 dead transitions. [2024-06-21 16:45:42,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 390 flow [2024-06-21 16:45:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:45:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:45:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-21 16:45:42,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-21 16:45:42,607 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 198 flow. Second operand 6 states and 122 transitions. [2024-06-21 16:45:42,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 390 flow [2024-06-21 16:45:42,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 370 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-21 16:45:42,610 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 232 flow [2024-06-21 16:45:42,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-21 16:45:42,611 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-06-21 16:45:42,611 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 232 flow [2024-06-21 16:45:42,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-06-21 16:45:42,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:42,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:42,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 16:45:42,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:42,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:42,612 INFO L85 PathProgramCache]: Analyzing trace with hash -579497411, now seen corresponding path program 2 times [2024-06-21 16:45:42,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:42,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127585774] [2024-06-21 16:45:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:42,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:43,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:43,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127585774] [2024-06-21 16:45:43,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127585774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:43,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:43,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:45:43,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984695698] [2024-06-21 16:45:43,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:43,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:45:43,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:43,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:45:43,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:45:43,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:45:43,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-06-21 16:45:43,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:43,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:45:43,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:43,580 INFO L124 PetriNetUnfolderBase]: 1288/2047 cut-off events. [2024-06-21 16:45:43,581 INFO L125 PetriNetUnfolderBase]: For 4533/4538 co-relation queries the response was YES. [2024-06-21 16:45:43,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6585 conditions, 2047 events. 1288/2047 cut-off events. For 4533/4538 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 10200 event pairs, 528 based on Foata normal form. 8/2045 useless extension candidates. Maximal degree in co-relation 6565. Up to 1862 conditions per place. [2024-06-21 16:45:43,592 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 47 selfloop transitions, 16 changer transitions 0/69 dead transitions. [2024-06-21 16:45:43,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 428 flow [2024-06-21 16:45:43,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:45:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:45:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-21 16:45:43,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-21 16:45:43,593 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 232 flow. Second operand 6 states and 122 transitions. [2024-06-21 16:45:43,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 428 flow [2024-06-21 16:45:43,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 69 transitions, 398 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-21 16:45:43,596 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 272 flow [2024-06-21 16:45:43,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-21 16:45:43,599 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-21 16:45:43,599 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 272 flow [2024-06-21 16:45:43,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2024-06-21 16:45:43,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:43,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:43,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 16:45:43,600 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:43,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2096774213, now seen corresponding path program 1 times [2024-06-21 16:45:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:43,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275282845] [2024-06-21 16:45:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:43,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:44,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:44,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275282845] [2024-06-21 16:45:44,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275282845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:44,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:44,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:45:44,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327673647] [2024-06-21 16:45:44,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:44,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:45:44,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:44,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:45:44,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:45:44,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:45:44,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 272 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-21 16:45:44,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:44,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:45:44,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:44,766 INFO L124 PetriNetUnfolderBase]: 1379/2252 cut-off events. [2024-06-21 16:45:44,766 INFO L125 PetriNetUnfolderBase]: For 6193/6193 co-relation queries the response was YES. [2024-06-21 16:45:44,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7516 conditions, 2252 events. 1379/2252 cut-off events. For 6193/6193 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11650 event pairs, 540 based on Foata normal form. 2/2242 useless extension candidates. Maximal degree in co-relation 7495. Up to 2030 conditions per place. [2024-06-21 16:45:44,781 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 57 selfloop transitions, 14 changer transitions 0/77 dead transitions. [2024-06-21 16:45:44,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 499 flow [2024-06-21 16:45:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:45:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:45:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-21 16:45:44,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2024-06-21 16:45:44,783 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 272 flow. Second operand 7 states and 136 transitions. [2024-06-21 16:45:44,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 499 flow [2024-06-21 16:45:44,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 450 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 16:45:44,788 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 308 flow [2024-06-21 16:45:44,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-06-21 16:45:44,789 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-06-21 16:45:44,790 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 308 flow [2024-06-21 16:45:44,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-21 16:45:44,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:44,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:44,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 16:45:44,790 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:44,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:44,791 INFO L85 PathProgramCache]: Analyzing trace with hash -789311251, now seen corresponding path program 1 times [2024-06-21 16:45:44,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:44,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537226765] [2024-06-21 16:45:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:44,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:45,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:45,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537226765] [2024-06-21 16:45:45,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537226765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:45,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:45,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:45:45,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110631017] [2024-06-21 16:45:45,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:45,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:45:45,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:45,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:45:45,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:45:45,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:45:45,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 308 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-21 16:45:45,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:45,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:45:45,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:46,264 INFO L124 PetriNetUnfolderBase]: 1493/2355 cut-off events. [2024-06-21 16:45:46,265 INFO L125 PetriNetUnfolderBase]: For 8773/8773 co-relation queries the response was YES. [2024-06-21 16:45:46,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8644 conditions, 2355 events. 1493/2355 cut-off events. For 8773/8773 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11979 event pairs, 554 based on Foata normal form. 2/2338 useless extension candidates. Maximal degree in co-relation 8621. Up to 2177 conditions per place. [2024-06-21 16:45:46,284 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 65 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-06-21 16:45:46,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 86 transitions, 562 flow [2024-06-21 16:45:46,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:45:46,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:45:46,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-21 16:45:46,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-21 16:45:46,287 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 308 flow. Second operand 7 states and 142 transitions. [2024-06-21 16:45:46,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 86 transitions, 562 flow [2024-06-21 16:45:46,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 524 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-21 16:45:46,293 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 344 flow [2024-06-21 16:45:46,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=344, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-06-21 16:45:46,294 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-06-21 16:45:46,294 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 344 flow [2024-06-21 16:45:46,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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) [2024-06-21 16:45:46,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:46,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:46,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 16:45:46,295 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:46,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:46,295 INFO L85 PathProgramCache]: Analyzing trace with hash 575492317, now seen corresponding path program 1 times [2024-06-21 16:45:46,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:46,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471410688] [2024-06-21 16:45:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:46,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:47,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:47,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:47,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471410688] [2024-06-21 16:45:47,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471410688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:47,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:47,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:45:47,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091572145] [2024-06-21 16:45:47,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:47,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:45:47,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:47,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:45:47,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:45:47,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:45:47,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 344 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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) [2024-06-21 16:45:47,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:47,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:45:47,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:47,751 INFO L124 PetriNetUnfolderBase]: 1361/2218 cut-off events. [2024-06-21 16:45:47,751 INFO L125 PetriNetUnfolderBase]: For 9738/9738 co-relation queries the response was YES. [2024-06-21 16:45:47,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8278 conditions, 2218 events. 1361/2218 cut-off events. For 9738/9738 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11357 event pairs, 500 based on Foata normal form. 4/2206 useless extension candidates. Maximal degree in co-relation 8254. Up to 1986 conditions per place. [2024-06-21 16:45:47,761 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 65 selfloop transitions, 16 changer transitions 0/87 dead transitions. [2024-06-21 16:45:47,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 87 transitions, 592 flow [2024-06-21 16:45:47,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:45:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:45:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-21 16:45:47,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-21 16:45:47,762 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 344 flow. Second operand 8 states and 154 transitions. [2024-06-21 16:45:47,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 87 transitions, 592 flow [2024-06-21 16:45:47,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 87 transitions, 542 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-21 16:45:47,767 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 363 flow [2024-06-21 16:45:47,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=363, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-21 16:45:47,767 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2024-06-21 16:45:47,768 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 363 flow [2024-06-21 16:45:47,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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) [2024-06-21 16:45:47,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:47,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:47,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 16:45:47,768 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)] === [2024-06-21 16:45:47,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:47,769 INFO L85 PathProgramCache]: Analyzing trace with hash 851056793, now seen corresponding path program 1 times [2024-06-21 16:45:47,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:47,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728802758] [2024-06-21 16:45:47,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:47,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:48,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:48,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728802758] [2024-06-21 16:45:48,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728802758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:48,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:48,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:45:48,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199187637] [2024-06-21 16:45:48,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:48,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:45:48,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:48,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:45:48,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:45:48,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:45:48,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 363 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-21 16:45:48,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:48,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:45:48,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:48,628 INFO L124 PetriNetUnfolderBase]: 1358/2209 cut-off events. [2024-06-21 16:45:48,629 INFO L125 PetriNetUnfolderBase]: For 11517/11517 co-relation queries the response was YES. [2024-06-21 16:45:48,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8517 conditions, 2209 events. 1358/2209 cut-off events. For 11517/11517 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11213 event pairs, 519 based on Foata normal form. 1/2194 useless extension candidates. Maximal degree in co-relation 8492. Up to 2024 conditions per place. [2024-06-21 16:45:48,638 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 60 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2024-06-21 16:45:48,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 539 flow [2024-06-21 16:45:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:45:48,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:45:48,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-06-21 16:45:48,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-21 16:45:48,640 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 363 flow. Second operand 5 states and 96 transitions. [2024-06-21 16:45:48,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 539 flow [2024-06-21 16:45:48,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 488 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 16:45:48,647 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 360 flow [2024-06-21 16:45:48,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2024-06-21 16:45:48,649 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-06-21 16:45:48,651 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 360 flow [2024-06-21 16:45:48,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-21 16:45:48,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:48,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:48,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 16:45:48,652 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:48,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:48,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1264880148, now seen corresponding path program 1 times [2024-06-21 16:45:48,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:48,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346665303] [2024-06-21 16:45:48,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:48,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:49,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:49,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346665303] [2024-06-21 16:45:49,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346665303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:49,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:49,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:45:49,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705942282] [2024-06-21 16:45:49,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:49,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:45:49,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:49,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:45:49,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:45:49,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:45:49,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 360 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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) [2024-06-21 16:45:49,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:49,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:45:49,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:50,036 INFO L124 PetriNetUnfolderBase]: 1576/2445 cut-off events. [2024-06-21 16:45:50,036 INFO L125 PetriNetUnfolderBase]: For 15624/15624 co-relation queries the response was YES. [2024-06-21 16:45:50,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10043 conditions, 2445 events. 1576/2445 cut-off events. For 15624/15624 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11904 event pairs, 568 based on Foata normal form. 2/2445 useless extension candidates. Maximal degree in co-relation 10017. Up to 2298 conditions per place. [2024-06-21 16:45:50,049 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 79 selfloop transitions, 17 changer transitions 0/101 dead transitions. [2024-06-21 16:45:50,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 101 transitions, 670 flow [2024-06-21 16:45:50,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:45:50,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:45:50,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-21 16:45:50,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-21 16:45:50,051 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 360 flow. Second operand 8 states and 150 transitions. [2024-06-21 16:45:50,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 101 transitions, 670 flow [2024-06-21 16:45:50,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 101 transitions, 644 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 16:45:50,059 INFO L231 Difference]: Finished difference. Result has 73 places, 75 transitions, 448 flow [2024-06-21 16:45:50,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=448, PETRI_PLACES=73, PETRI_TRANSITIONS=75} [2024-06-21 16:45:50,060 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-06-21 16:45:50,060 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 75 transitions, 448 flow [2024-06-21 16:45:50,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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) [2024-06-21 16:45:50,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:50,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:50,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 16:45:50,060 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:50,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:50,061 INFO L85 PathProgramCache]: Analyzing trace with hash 652765348, now seen corresponding path program 2 times [2024-06-21 16:45:50,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:50,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285885273] [2024-06-21 16:45:50,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:50,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:50,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:50,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285885273] [2024-06-21 16:45:50,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285885273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:50,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:50,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:45:50,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381984877] [2024-06-21 16:45:50,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:50,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:45:50,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:50,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:45:50,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:45:51,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:45:51,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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) [2024-06-21 16:45:51,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:51,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:45:51,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:51,473 INFO L124 PetriNetUnfolderBase]: 1598/2479 cut-off events. [2024-06-21 16:45:51,473 INFO L125 PetriNetUnfolderBase]: For 18688/18693 co-relation queries the response was YES. [2024-06-21 16:45:51,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10891 conditions, 2479 events. 1598/2479 cut-off events. For 18688/18693 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 12101 event pairs, 570 based on Foata normal form. 6/2482 useless extension candidates. Maximal degree in co-relation 10862. Up to 2285 conditions per place. [2024-06-21 16:45:51,484 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 76 selfloop transitions, 27 changer transitions 0/108 dead transitions. [2024-06-21 16:45:51,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 780 flow [2024-06-21 16:45:51,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:45:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:45:51,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-21 16:45:51,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-21 16:45:51,486 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 448 flow. Second operand 8 states and 151 transitions. [2024-06-21 16:45:51,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 780 flow [2024-06-21 16:45:51,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 108 transitions, 730 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-21 16:45:51,498 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 546 flow [2024-06-21 16:45:51,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=546, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2024-06-21 16:45:51,499 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2024-06-21 16:45:51,499 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 546 flow [2024-06-21 16:45:51,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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) [2024-06-21 16:45:51,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:51,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:51,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 16:45:51,500 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:51,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:51,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1552291704, now seen corresponding path program 3 times [2024-06-21 16:45:51,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:51,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281186377] [2024-06-21 16:45:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:51,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:52,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:52,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281186377] [2024-06-21 16:45:52,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281186377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:52,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:52,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:45:52,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421119940] [2024-06-21 16:45:52,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:52,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:45:52,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:52,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:45:52,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:45:52,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:45:52,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 546 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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) [2024-06-21 16:45:52,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:52,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:45:52,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:52,866 INFO L124 PetriNetUnfolderBase]: 1609/2500 cut-off events. [2024-06-21 16:45:52,866 INFO L125 PetriNetUnfolderBase]: For 21896/21901 co-relation queries the response was YES. [2024-06-21 16:45:52,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11542 conditions, 2500 events. 1609/2500 cut-off events. For 21896/21901 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 12172 event pairs, 570 based on Foata normal form. 6/2503 useless extension candidates. Maximal degree in co-relation 11511. Up to 2301 conditions per place. [2024-06-21 16:45:52,880 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 78 selfloop transitions, 30 changer transitions 0/113 dead transitions. [2024-06-21 16:45:52,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 872 flow [2024-06-21 16:45:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:45:52,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:45:52,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-21 16:45:52,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-21 16:45:52,881 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 546 flow. Second operand 8 states and 150 transitions. [2024-06-21 16:45:52,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 113 transitions, 872 flow [2024-06-21 16:45:52,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 816 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-21 16:45:52,893 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 616 flow [2024-06-21 16:45:52,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=616, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2024-06-21 16:45:52,894 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-06-21 16:45:52,894 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 616 flow [2024-06-21 16:45:52,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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) [2024-06-21 16:45:52,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:52,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:52,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 16:45:52,895 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:52,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:52,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1552558614, now seen corresponding path program 4 times [2024-06-21 16:45:52,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:52,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612199764] [2024-06-21 16:45:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:52,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:53,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:53,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612199764] [2024-06-21 16:45:53,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612199764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:53,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:53,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:45:53,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204228703] [2024-06-21 16:45:53,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:53,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:45:53,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:53,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:45:53,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:45:53,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:45:53,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 616 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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) [2024-06-21 16:45:53,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:53,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:45:53,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:54,232 INFO L124 PetriNetUnfolderBase]: 1604/2493 cut-off events. [2024-06-21 16:45:54,232 INFO L125 PetriNetUnfolderBase]: For 25002/25007 co-relation queries the response was YES. [2024-06-21 16:45:54,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12040 conditions, 2493 events. 1604/2493 cut-off events. For 25002/25007 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 12174 event pairs, 570 based on Foata normal form. 6/2496 useless extension candidates. Maximal degree in co-relation 12007. Up to 2258 conditions per place. [2024-06-21 16:45:54,244 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 70 selfloop transitions, 41 changer transitions 0/116 dead transitions. [2024-06-21 16:45:54,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 116 transitions, 940 flow [2024-06-21 16:45:54,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:45:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:45:54,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-21 16:45:54,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-21 16:45:54,245 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 616 flow. Second operand 8 states and 151 transitions. [2024-06-21 16:45:54,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 116 transitions, 940 flow [2024-06-21 16:45:54,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 116 transitions, 866 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-21 16:45:54,257 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 682 flow [2024-06-21 16:45:54,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=682, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2024-06-21 16:45:54,259 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2024-06-21 16:45:54,259 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 682 flow [2024-06-21 16:45:54,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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) [2024-06-21 16:45:54,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:54,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:54,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 16:45:54,259 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)] === [2024-06-21 16:45:54,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:54,260 INFO L85 PathProgramCache]: Analyzing trace with hash 612958655, now seen corresponding path program 1 times [2024-06-21 16:45:54,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:54,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185094495] [2024-06-21 16:45:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:54,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:54,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:54,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185094495] [2024-06-21 16:45:54,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185094495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:54,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:54,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:45:54,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162645679] [2024-06-21 16:45:54,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:54,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:45:54,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:54,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:45:54,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:45:54,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:45:54,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 682 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-21 16:45:54,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:54,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:45:54,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:55,373 INFO L124 PetriNetUnfolderBase]: 1601/2501 cut-off events. [2024-06-21 16:45:55,374 INFO L125 PetriNetUnfolderBase]: For 28271/28271 co-relation queries the response was YES. [2024-06-21 16:45:55,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12537 conditions, 2501 events. 1601/2501 cut-off events. For 28271/28271 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12252 event pairs, 562 based on Foata normal form. 1/2500 useless extension candidates. Maximal degree in co-relation 12503. Up to 2371 conditions per place. [2024-06-21 16:45:55,389 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 89 selfloop transitions, 11 changer transitions 0/105 dead transitions. [2024-06-21 16:45:55,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 105 transitions, 928 flow [2024-06-21 16:45:55,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:45:55,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:45:55,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-21 16:45:55,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-21 16:45:55,390 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 682 flow. Second operand 6 states and 106 transitions. [2024-06-21 16:45:55,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 105 transitions, 928 flow [2024-06-21 16:45:55,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 812 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-21 16:45:55,403 INFO L231 Difference]: Finished difference. Result has 87 places, 96 transitions, 624 flow [2024-06-21 16:45:55,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=624, PETRI_PLACES=87, PETRI_TRANSITIONS=96} [2024-06-21 16:45:55,404 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2024-06-21 16:45:55,404 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 96 transitions, 624 flow [2024-06-21 16:45:55,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-21 16:45:55,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:55,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:55,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 16:45:55,405 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:55,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:55,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1678272236, now seen corresponding path program 1 times [2024-06-21 16:45:55,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:55,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661607279] [2024-06-21 16:45:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:55,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:56,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:56,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661607279] [2024-06-21 16:45:56,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661607279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:56,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:56,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:45:56,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947391911] [2024-06-21 16:45:56,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:56,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:45:56,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:56,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:45:56,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:45:56,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:45:56,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 96 transitions, 624 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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) [2024-06-21 16:45:56,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:56,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:45:56,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:56,925 INFO L124 PetriNetUnfolderBase]: 1615/2538 cut-off events. [2024-06-21 16:45:56,926 INFO L125 PetriNetUnfolderBase]: For 37169/37169 co-relation queries the response was YES. [2024-06-21 16:45:56,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13560 conditions, 2538 events. 1615/2538 cut-off events. For 37169/37169 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12956 event pairs, 417 based on Foata normal form. 4/2540 useless extension candidates. Maximal degree in co-relation 13525. Up to 2285 conditions per place. [2024-06-21 16:45:56,941 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 104 selfloop transitions, 15 changer transitions 0/129 dead transitions. [2024-06-21 16:45:56,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 129 transitions, 978 flow [2024-06-21 16:45:56,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:45:56,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:45:56,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-21 16:45:56,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-21 16:45:56,943 INFO L175 Difference]: Start difference. First operand has 87 places, 96 transitions, 624 flow. Second operand 8 states and 160 transitions. [2024-06-21 16:45:56,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 129 transitions, 978 flow [2024-06-21 16:45:56,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 942 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 16:45:56,955 INFO L231 Difference]: Finished difference. Result has 91 places, 98 transitions, 667 flow [2024-06-21 16:45:56,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=667, PETRI_PLACES=91, PETRI_TRANSITIONS=98} [2024-06-21 16:45:56,956 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-06-21 16:45:56,956 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 98 transitions, 667 flow [2024-06-21 16:45:56,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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) [2024-06-21 16:45:56,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:56,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:56,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 16:45:56,957 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:56,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:56,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1791951716, now seen corresponding path program 2 times [2024-06-21 16:45:56,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:56,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185410486] [2024-06-21 16:45:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:56,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:57,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:57,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185410486] [2024-06-21 16:45:57,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185410486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:57,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:57,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:45:57,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652950829] [2024-06-21 16:45:57,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:57,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:45:57,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:57,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:45:57,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:45:58,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:45:58,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 98 transitions, 667 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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) [2024-06-21 16:45:58,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:58,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:45:58,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:45:58,612 INFO L124 PetriNetUnfolderBase]: 1632/2553 cut-off events. [2024-06-21 16:45:58,612 INFO L125 PetriNetUnfolderBase]: For 41562/41562 co-relation queries the response was YES. [2024-06-21 16:45:58,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14200 conditions, 2553 events. 1632/2553 cut-off events. For 41562/41562 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13015 event pairs, 533 based on Foata normal form. 4/2549 useless extension candidates. Maximal degree in co-relation 14164. Up to 2338 conditions per place. [2024-06-21 16:45:58,628 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 104 selfloop transitions, 16 changer transitions 0/130 dead transitions. [2024-06-21 16:45:58,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 130 transitions, 1025 flow [2024-06-21 16:45:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:45:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:45:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-21 16:45:58,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-21 16:45:58,632 INFO L175 Difference]: Start difference. First operand has 91 places, 98 transitions, 667 flow. Second operand 8 states and 160 transitions. [2024-06-21 16:45:58,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 130 transitions, 1025 flow [2024-06-21 16:45:58,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 130 transitions, 964 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 16:45:58,657 INFO L231 Difference]: Finished difference. Result has 93 places, 100 transitions, 691 flow [2024-06-21 16:45:58,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=691, PETRI_PLACES=93, PETRI_TRANSITIONS=100} [2024-06-21 16:45:58,657 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-06-21 16:45:58,658 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 100 transitions, 691 flow [2024-06-21 16:45:58,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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) [2024-06-21 16:45:58,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:45:58,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:45:58,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 16:45:58,658 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:45:58,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:45:58,659 INFO L85 PathProgramCache]: Analyzing trace with hash -561226158, now seen corresponding path program 1 times [2024-06-21 16:45:58,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:45:58,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862098398] [2024-06-21 16:45:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:45:58,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:45:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:45:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:45:59,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:45:59,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862098398] [2024-06-21 16:45:59,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862098398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:45:59,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:45:59,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:45:59,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647790630] [2024-06-21 16:45:59,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:45:59,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:45:59,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:45:59,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:45:59,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:45:59,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:45:59,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 100 transitions, 691 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:45:59,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:45:59,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:45:59,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:00,537 INFO L124 PetriNetUnfolderBase]: 1743/2689 cut-off events. [2024-06-21 16:46:00,537 INFO L125 PetriNetUnfolderBase]: For 47133/47133 co-relation queries the response was YES. [2024-06-21 16:46:00,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15012 conditions, 2689 events. 1743/2689 cut-off events. For 47133/47133 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 13264 event pairs, 524 based on Foata normal form. 2/2689 useless extension candidates. Maximal degree in co-relation 14975. Up to 2508 conditions per place. [2024-06-21 16:46:00,553 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 113 selfloop transitions, 20 changer transitions 0/139 dead transitions. [2024-06-21 16:46:00,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 139 transitions, 1116 flow [2024-06-21 16:46:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-21 16:46:00,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-21 16:46:00,565 INFO L175 Difference]: Start difference. First operand has 93 places, 100 transitions, 691 flow. Second operand 9 states and 170 transitions. [2024-06-21 16:46:00,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 139 transitions, 1116 flow [2024-06-21 16:46:00,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 139 transitions, 1046 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-21 16:46:00,585 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 756 flow [2024-06-21 16:46:00,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=756, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-06-21 16:46:00,586 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-06-21 16:46:00,587 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 756 flow [2024-06-21 16:46:00,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:00,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:00,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:00,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 16:46:00,587 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:00,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:00,588 INFO L85 PathProgramCache]: Analyzing trace with hash -556762468, now seen corresponding path program 3 times [2024-06-21 16:46:00,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:00,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226913928] [2024-06-21 16:46:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:00,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:01,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:01,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226913928] [2024-06-21 16:46:01,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226913928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:01,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:01,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:46:01,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697162461] [2024-06-21 16:46:01,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:01,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:46:01,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:01,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:46:01,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:46:01,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:46:01,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 756 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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) [2024-06-21 16:46:01,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:01,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:46:01,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:02,273 INFO L124 PetriNetUnfolderBase]: 1637/2584 cut-off events. [2024-06-21 16:46:02,273 INFO L125 PetriNetUnfolderBase]: For 52259/52259 co-relation queries the response was YES. [2024-06-21 16:46:02,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15178 conditions, 2584 events. 1637/2584 cut-off events. For 52259/52259 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13230 event pairs, 478 based on Foata normal form. 4/2579 useless extension candidates. Maximal degree in co-relation 15139. Up to 2357 conditions per place. [2024-06-21 16:46:02,288 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 106 selfloop transitions, 18 changer transitions 0/135 dead transitions. [2024-06-21 16:46:02,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 135 transitions, 1120 flow [2024-06-21 16:46:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:46:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:46:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-21 16:46:02,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-21 16:46:02,290 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 756 flow. Second operand 8 states and 157 transitions. [2024-06-21 16:46:02,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 135 transitions, 1120 flow [2024-06-21 16:46:02,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 135 transitions, 1032 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-21 16:46:02,307 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 763 flow [2024-06-21 16:46:02,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=763, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2024-06-21 16:46:02,307 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-06-21 16:46:02,308 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 763 flow [2024-06-21 16:46:02,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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) [2024-06-21 16:46:02,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:02,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:02,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 16:46:02,308 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:02,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:02,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1172289826, now seen corresponding path program 2 times [2024-06-21 16:46:02,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:02,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425714779] [2024-06-21 16:46:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:03,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:03,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425714779] [2024-06-21 16:46:03,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425714779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:03,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:03,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:03,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498503948] [2024-06-21 16:46:03,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:03,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:03,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:03,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:03,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:03,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:03,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 763 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:03,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:03,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:03,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:04,074 INFO L124 PetriNetUnfolderBase]: 1799/2785 cut-off events. [2024-06-21 16:46:04,074 INFO L125 PetriNetUnfolderBase]: For 59267/59267 co-relation queries the response was YES. [2024-06-21 16:46:04,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16415 conditions, 2785 events. 1799/2785 cut-off events. For 59267/59267 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13876 event pairs, 510 based on Foata normal form. 2/2785 useless extension candidates. Maximal degree in co-relation 16375. Up to 2582 conditions per place. [2024-06-21 16:46:04,089 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 116 selfloop transitions, 23 changer transitions 0/145 dead transitions. [2024-06-21 16:46:04,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 145 transitions, 1212 flow [2024-06-21 16:46:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-21 16:46:04,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-21 16:46:04,091 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 763 flow. Second operand 9 states and 169 transitions. [2024-06-21 16:46:04,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 145 transitions, 1212 flow [2024-06-21 16:46:04,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 145 transitions, 1116 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-21 16:46:04,119 INFO L231 Difference]: Finished difference. Result has 102 places, 115 transitions, 830 flow [2024-06-21 16:46:04,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=830, PETRI_PLACES=102, PETRI_TRANSITIONS=115} [2024-06-21 16:46:04,119 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-06-21 16:46:04,120 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 115 transitions, 830 flow [2024-06-21 16:46:04,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:04,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:04,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:04,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 16:46:04,120 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:04,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:04,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1172469564, now seen corresponding path program 1 times [2024-06-21 16:46:04,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:04,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568421235] [2024-06-21 16:46:04,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:04,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:05,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:05,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568421235] [2024-06-21 16:46:05,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568421235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:05,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:05,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:05,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964673322] [2024-06-21 16:46:05,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:05,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:05,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:05,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:05,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:05,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:05,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 115 transitions, 830 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:05,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:05,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:05,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:05,615 INFO L124 PetriNetUnfolderBase]: 1816/2807 cut-off events. [2024-06-21 16:46:05,615 INFO L125 PetriNetUnfolderBase]: For 66011/66011 co-relation queries the response was YES. [2024-06-21 16:46:05,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17082 conditions, 2807 events. 1816/2807 cut-off events. For 66011/66011 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13897 event pairs, 506 based on Foata normal form. 4/2809 useless extension candidates. Maximal degree in co-relation 17041. Up to 2618 conditions per place. [2024-06-21 16:46:05,631 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 123 selfloop transitions, 19 changer transitions 0/148 dead transitions. [2024-06-21 16:46:05,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 148 transitions, 1240 flow [2024-06-21 16:46:05,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:05,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:05,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-21 16:46:05,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-21 16:46:05,633 INFO L175 Difference]: Start difference. First operand has 102 places, 115 transitions, 830 flow. Second operand 9 states and 167 transitions. [2024-06-21 16:46:05,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 148 transitions, 1240 flow [2024-06-21 16:46:05,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 148 transitions, 1136 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-21 16:46:05,661 INFO L231 Difference]: Finished difference. Result has 105 places, 117 transitions, 823 flow [2024-06-21 16:46:05,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=823, PETRI_PLACES=105, PETRI_TRANSITIONS=117} [2024-06-21 16:46:05,662 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2024-06-21 16:46:05,662 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 117 transitions, 823 flow [2024-06-21 16:46:05,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:05,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:05,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:05,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 16:46:05,663 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:05,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1172462806, now seen corresponding path program 3 times [2024-06-21 16:46:05,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:05,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886665242] [2024-06-21 16:46:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:05,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:06,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:06,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886665242] [2024-06-21 16:46:06,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886665242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:06,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:06,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:06,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851800350] [2024-06-21 16:46:06,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:06,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:06,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:06,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:06,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:06,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:06,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 117 transitions, 823 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:06,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:06,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:06,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:07,563 INFO L124 PetriNetUnfolderBase]: 1827/2828 cut-off events. [2024-06-21 16:46:07,563 INFO L125 PetriNetUnfolderBase]: For 71256/71256 co-relation queries the response was YES. [2024-06-21 16:46:07,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17528 conditions, 2828 events. 1827/2828 cut-off events. For 71256/71256 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 14110 event pairs, 508 based on Foata normal form. 2/2828 useless extension candidates. Maximal degree in co-relation 17486. Up to 2625 conditions per place. [2024-06-21 16:46:07,580 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 121 selfloop transitions, 25 changer transitions 0/152 dead transitions. [2024-06-21 16:46:07,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 152 transitions, 1273 flow [2024-06-21 16:46:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:07,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-21 16:46:07,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-21 16:46:07,581 INFO L175 Difference]: Start difference. First operand has 105 places, 117 transitions, 823 flow. Second operand 9 states and 169 transitions. [2024-06-21 16:46:07,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 152 transitions, 1273 flow [2024-06-21 16:46:07,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 152 transitions, 1194 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-21 16:46:07,606 INFO L231 Difference]: Finished difference. Result has 107 places, 122 transitions, 890 flow [2024-06-21 16:46:07,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=890, PETRI_PLACES=107, PETRI_TRANSITIONS=122} [2024-06-21 16:46:07,606 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 64 predicate places. [2024-06-21 16:46:07,606 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 122 transitions, 890 flow [2024-06-21 16:46:07,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:07,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:07,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:07,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 16:46:07,607 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:07,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:07,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1172469316, now seen corresponding path program 4 times [2024-06-21 16:46:07,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:07,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89991743] [2024-06-21 16:46:07,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:07,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:08,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:08,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89991743] [2024-06-21 16:46:08,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89991743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:08,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:08,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:08,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914783663] [2024-06-21 16:46:08,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:08,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:08,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:08,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:08,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:08,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:08,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 122 transitions, 890 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:08,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:08,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:08,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:09,150 INFO L124 PetriNetUnfolderBase]: 1838/2849 cut-off events. [2024-06-21 16:46:09,151 INFO L125 PetriNetUnfolderBase]: For 78517/78517 co-relation queries the response was YES. [2024-06-21 16:46:09,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18128 conditions, 2849 events. 1838/2849 cut-off events. For 78517/78517 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 14211 event pairs, 508 based on Foata normal form. 2/2849 useless extension candidates. Maximal degree in co-relation 18085. Up to 2572 conditions per place. [2024-06-21 16:46:09,167 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 105 selfloop transitions, 44 changer transitions 0/155 dead transitions. [2024-06-21 16:46:09,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 155 transitions, 1340 flow [2024-06-21 16:46:09,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:09,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-21 16:46:09,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-21 16:46:09,169 INFO L175 Difference]: Start difference. First operand has 107 places, 122 transitions, 890 flow. Second operand 9 states and 171 transitions. [2024-06-21 16:46:09,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 155 transitions, 1340 flow [2024-06-21 16:46:09,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 155 transitions, 1240 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-21 16:46:09,203 INFO L231 Difference]: Finished difference. Result has 111 places, 125 transitions, 968 flow [2024-06-21 16:46:09,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=111, PETRI_TRANSITIONS=125} [2024-06-21 16:46:09,204 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 68 predicate places. [2024-06-21 16:46:09,204 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 125 transitions, 968 flow [2024-06-21 16:46:09,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:09,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:09,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:09,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 16:46:09,204 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:09,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:09,205 INFO L85 PathProgramCache]: Analyzing trace with hash 868417852, now seen corresponding path program 1 times [2024-06-21 16:46:09,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:09,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245001298] [2024-06-21 16:46:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:09,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:09,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:09,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245001298] [2024-06-21 16:46:09,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245001298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:09,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:09,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:46:09,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091289846] [2024-06-21 16:46:09,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:09,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:46:09,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:09,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:46:09,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:46:09,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:09,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 125 transitions, 968 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-21 16:46:09,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:09,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:09,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:10,260 INFO L124 PetriNetUnfolderBase]: 1876/2893 cut-off events. [2024-06-21 16:46:10,261 INFO L125 PetriNetUnfolderBase]: For 84925/84925 co-relation queries the response was YES. [2024-06-21 16:46:10,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18935 conditions, 2893 events. 1876/2893 cut-off events. For 84925/84925 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 14328 event pairs, 515 based on Foata normal form. 2/2893 useless extension candidates. Maximal degree in co-relation 18891. Up to 2702 conditions per place. [2024-06-21 16:46:10,279 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 125 selfloop transitions, 18 changer transitions 0/149 dead transitions. [2024-06-21 16:46:10,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 149 transitions, 1432 flow [2024-06-21 16:46:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:46:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:46:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-21 16:46:10,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-21 16:46:10,281 INFO L175 Difference]: Start difference. First operand has 111 places, 125 transitions, 968 flow. Second operand 6 states and 117 transitions. [2024-06-21 16:46:10,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 149 transitions, 1432 flow [2024-06-21 16:46:10,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 149 transitions, 1278 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-21 16:46:10,328 INFO L231 Difference]: Finished difference. Result has 110 places, 131 transitions, 931 flow [2024-06-21 16:46:10,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=931, PETRI_PLACES=110, PETRI_TRANSITIONS=131} [2024-06-21 16:46:10,329 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-06-21 16:46:10,329 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 131 transitions, 931 flow [2024-06-21 16:46:10,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-21 16:46:10,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:10,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:10,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 16:46:10,330 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:10,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:10,330 INFO L85 PathProgramCache]: Analyzing trace with hash 648317874, now seen corresponding path program 4 times [2024-06-21 16:46:10,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:10,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351643789] [2024-06-21 16:46:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:10,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:11,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:11,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:11,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351643789] [2024-06-21 16:46:11,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351643789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:11,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:11,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:46:11,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426097128] [2024-06-21 16:46:11,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:11,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:46:11,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:11,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:46:11,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:46:11,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:46:11,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 131 transitions, 931 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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) [2024-06-21 16:46:11,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:11,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:46:11,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:11,850 INFO L124 PetriNetUnfolderBase]: 1737/2739 cut-off events. [2024-06-21 16:46:11,851 INFO L125 PetriNetUnfolderBase]: For 88659/88664 co-relation queries the response was YES. [2024-06-21 16:46:11,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18261 conditions, 2739 events. 1737/2739 cut-off events. For 88659/88664 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 14096 event pairs, 483 based on Foata normal form. 12/2741 useless extension candidates. Maximal degree in co-relation 18216. Up to 2416 conditions per place. [2024-06-21 16:46:11,869 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 109 selfloop transitions, 36 changer transitions 0/157 dead transitions. [2024-06-21 16:46:11,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 157 transitions, 1341 flow [2024-06-21 16:46:11,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:46:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:46:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-21 16:46:11,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-21 16:46:11,871 INFO L175 Difference]: Start difference. First operand has 110 places, 131 transitions, 931 flow. Second operand 8 states and 157 transitions. [2024-06-21 16:46:11,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 157 transitions, 1341 flow [2024-06-21 16:46:11,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 157 transitions, 1305 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-21 16:46:11,908 INFO L231 Difference]: Finished difference. Result has 116 places, 133 transitions, 1038 flow [2024-06-21 16:46:11,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1038, PETRI_PLACES=116, PETRI_TRANSITIONS=133} [2024-06-21 16:46:11,909 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2024-06-21 16:46:11,909 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 133 transitions, 1038 flow [2024-06-21 16:46:11,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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) [2024-06-21 16:46:11,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:11,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:11,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 16:46:11,909 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:11,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:11,910 INFO L85 PathProgramCache]: Analyzing trace with hash 884677932, now seen corresponding path program 2 times [2024-06-21 16:46:11,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:11,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673370722] [2024-06-21 16:46:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:11,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:12,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:12,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673370722] [2024-06-21 16:46:12,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673370722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:12,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:12,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:12,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645578649] [2024-06-21 16:46:12,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:12,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:12,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:12,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:12,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:12,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:12,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 133 transitions, 1038 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:12,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:12,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:12,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:13,472 INFO L124 PetriNetUnfolderBase]: 1877/2893 cut-off events. [2024-06-21 16:46:13,473 INFO L125 PetriNetUnfolderBase]: For 96947/96952 co-relation queries the response was YES. [2024-06-21 16:46:13,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19578 conditions, 2893 events. 1877/2893 cut-off events. For 96947/96952 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 14318 event pairs, 517 based on Foata normal form. 8/2898 useless extension candidates. Maximal degree in co-relation 19531. Up to 2614 conditions per place. [2024-06-21 16:46:13,491 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 114 selfloop transitions, 43 changer transitions 0/163 dead transitions. [2024-06-21 16:46:13,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 163 transitions, 1480 flow [2024-06-21 16:46:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:13,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-21 16:46:13,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 16:46:13,493 INFO L175 Difference]: Start difference. First operand has 116 places, 133 transitions, 1038 flow. Second operand 9 states and 168 transitions. [2024-06-21 16:46:13,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 163 transitions, 1480 flow [2024-06-21 16:46:13,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 163 transitions, 1347 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-21 16:46:13,541 INFO L231 Difference]: Finished difference. Result has 119 places, 135 transitions, 1060 flow [2024-06-21 16:46:13,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1060, PETRI_PLACES=119, PETRI_TRANSITIONS=135} [2024-06-21 16:46:13,542 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2024-06-21 16:46:13,542 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 135 transitions, 1060 flow [2024-06-21 16:46:13,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:13,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:13,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:13,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 16:46:13,543 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:13,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:13,556 INFO L85 PathProgramCache]: Analyzing trace with hash 648495814, now seen corresponding path program 5 times [2024-06-21 16:46:13,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:13,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549107470] [2024-06-21 16:46:13,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:13,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:14,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:14,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549107470] [2024-06-21 16:46:14,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549107470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:14,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:14,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:14,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746049981] [2024-06-21 16:46:14,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:14,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:14,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:14,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:14,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:14,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:14,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 135 transitions, 1060 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:14,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:14,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:14,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:15,417 INFO L124 PetriNetUnfolderBase]: 1910/2946 cut-off events. [2024-06-21 16:46:15,418 INFO L125 PetriNetUnfolderBase]: For 101796/101801 co-relation queries the response was YES. [2024-06-21 16:46:15,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20052 conditions, 2946 events. 1910/2946 cut-off events. For 101796/101801 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 14658 event pairs, 517 based on Foata normal form. 6/2949 useless extension candidates. Maximal degree in co-relation 20004. Up to 2653 conditions per place. [2024-06-21 16:46:15,437 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 123 selfloop transitions, 43 changer transitions 0/172 dead transitions. [2024-06-21 16:46:15,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 172 transitions, 1588 flow [2024-06-21 16:46:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:15,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-21 16:46:15,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-21 16:46:15,439 INFO L175 Difference]: Start difference. First operand has 119 places, 135 transitions, 1060 flow. Second operand 9 states and 171 transitions. [2024-06-21 16:46:15,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 172 transitions, 1588 flow [2024-06-21 16:46:15,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 172 transitions, 1451 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-21 16:46:15,491 INFO L231 Difference]: Finished difference. Result has 122 places, 145 transitions, 1163 flow [2024-06-21 16:46:15,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1163, PETRI_PLACES=122, PETRI_TRANSITIONS=145} [2024-06-21 16:46:15,492 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 79 predicate places. [2024-06-21 16:46:15,492 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 145 transitions, 1163 flow [2024-06-21 16:46:15,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:15,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:15,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:15,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 16:46:15,492 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:15,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:15,493 INFO L85 PathProgramCache]: Analyzing trace with hash 654751924, now seen corresponding path program 6 times [2024-06-21 16:46:15,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:15,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048713621] [2024-06-21 16:46:15,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:15,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:16,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:16,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048713621] [2024-06-21 16:46:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048713621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:16,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:16,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:16,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830808481] [2024-06-21 16:46:16,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:16,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:16,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:16,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:16,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:16,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:16,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 145 transitions, 1163 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:16,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:16,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:16,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:17,137 INFO L124 PetriNetUnfolderBase]: 1921/2962 cut-off events. [2024-06-21 16:46:17,138 INFO L125 PetriNetUnfolderBase]: For 110726/110731 co-relation queries the response was YES. [2024-06-21 16:46:17,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20792 conditions, 2962 events. 1921/2962 cut-off events. For 110726/110731 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 14762 event pairs, 517 based on Foata normal form. 6/2965 useless extension candidates. Maximal degree in co-relation 20742. Up to 2669 conditions per place. [2024-06-21 16:46:17,157 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 124 selfloop transitions, 47 changer transitions 0/177 dead transitions. [2024-06-21 16:46:17,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 177 transitions, 1683 flow [2024-06-21 16:46:17,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-21 16:46:17,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-21 16:46:17,172 INFO L175 Difference]: Start difference. First operand has 122 places, 145 transitions, 1163 flow. Second operand 9 states and 169 transitions. [2024-06-21 16:46:17,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 177 transitions, 1683 flow [2024-06-21 16:46:17,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 177 transitions, 1529 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-21 16:46:17,231 INFO L231 Difference]: Finished difference. Result has 127 places, 150 transitions, 1227 flow [2024-06-21 16:46:17,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1227, PETRI_PLACES=127, PETRI_TRANSITIONS=150} [2024-06-21 16:46:17,232 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-06-21 16:46:17,232 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 150 transitions, 1227 flow [2024-06-21 16:46:17,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:17,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:17,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:17,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 16:46:17,233 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:17,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:17,233 INFO L85 PathProgramCache]: Analyzing trace with hash 648322834, now seen corresponding path program 7 times [2024-06-21 16:46:17,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:17,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177132302] [2024-06-21 16:46:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:17,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:18,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:18,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177132302] [2024-06-21 16:46:18,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177132302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:18,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:18,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:18,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680413747] [2024-06-21 16:46:18,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:18,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:18,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:18,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:18,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 150 transitions, 1227 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:18,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:18,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:18,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:18,927 INFO L124 PetriNetUnfolderBase]: 1932/2983 cut-off events. [2024-06-21 16:46:18,928 INFO L125 PetriNetUnfolderBase]: For 118862/118867 co-relation queries the response was YES. [2024-06-21 16:46:18,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21260 conditions, 2983 events. 1932/2983 cut-off events. For 118862/118867 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 14867 event pairs, 517 based on Foata normal form. 6/2986 useless extension candidates. Maximal degree in co-relation 21209. Up to 2685 conditions per place. [2024-06-21 16:46:18,948 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 128 selfloop transitions, 46 changer transitions 0/180 dead transitions. [2024-06-21 16:46:18,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 180 transitions, 1743 flow [2024-06-21 16:46:18,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:18,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-21 16:46:18,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-21 16:46:18,949 INFO L175 Difference]: Start difference. First operand has 127 places, 150 transitions, 1227 flow. Second operand 9 states and 170 transitions. [2024-06-21 16:46:18,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 180 transitions, 1743 flow [2024-06-21 16:46:19,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 180 transitions, 1583 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-21 16:46:19,006 INFO L231 Difference]: Finished difference. Result has 131 places, 153 transitions, 1273 flow [2024-06-21 16:46:19,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1273, PETRI_PLACES=131, PETRI_TRANSITIONS=153} [2024-06-21 16:46:19,007 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 88 predicate places. [2024-06-21 16:46:19,007 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 153 transitions, 1273 flow [2024-06-21 16:46:19,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:19,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:19,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:19,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 16:46:19,008 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:19,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash 876403474, now seen corresponding path program 8 times [2024-06-21 16:46:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:19,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909223853] [2024-06-21 16:46:19,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:19,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:19,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:19,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909223853] [2024-06-21 16:46:19,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909223853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:19,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:19,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:19,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893683708] [2024-06-21 16:46:19,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:19,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:19,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:20,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:20,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 153 transitions, 1273 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:20,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:20,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:20,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:20,608 INFO L124 PetriNetUnfolderBase]: 1943/3001 cut-off events. [2024-06-21 16:46:20,608 INFO L125 PetriNetUnfolderBase]: For 128262/128265 co-relation queries the response was YES. [2024-06-21 16:46:20,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21855 conditions, 3001 events. 1943/3001 cut-off events. For 128262/128265 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14977 event pairs, 529 based on Foata normal form. 2/2999 useless extension candidates. Maximal degree in co-relation 21803. Up to 2650 conditions per place. [2024-06-21 16:46:20,629 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 117 selfloop transitions, 60 changer transitions 0/183 dead transitions. [2024-06-21 16:46:20,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 183 transitions, 1801 flow [2024-06-21 16:46:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-21 16:46:20,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-21 16:46:20,631 INFO L175 Difference]: Start difference. First operand has 131 places, 153 transitions, 1273 flow. Second operand 9 states and 172 transitions. [2024-06-21 16:46:20,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 183 transitions, 1801 flow [2024-06-21 16:46:20,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 183 transitions, 1603 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-21 16:46:20,698 INFO L231 Difference]: Finished difference. Result has 132 places, 156 transitions, 1315 flow [2024-06-21 16:46:20,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1315, PETRI_PLACES=132, PETRI_TRANSITIONS=156} [2024-06-21 16:46:20,699 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 89 predicate places. [2024-06-21 16:46:20,699 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 156 transitions, 1315 flow [2024-06-21 16:46:20,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:20,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:20,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:20,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 16:46:20,700 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:20,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1968730700, now seen corresponding path program 9 times [2024-06-21 16:46:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181559180] [2024-06-21 16:46:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:21,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:21,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181559180] [2024-06-21 16:46:21,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181559180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:21,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:21,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:21,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303514876] [2024-06-21 16:46:21,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:21,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:21,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:21,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:21,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:21,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:21,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 156 transitions, 1315 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:21,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:21,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:21,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:22,353 INFO L124 PetriNetUnfolderBase]: 1954/3022 cut-off events. [2024-06-21 16:46:22,353 INFO L125 PetriNetUnfolderBase]: For 139305/139308 co-relation queries the response was YES. [2024-06-21 16:46:22,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22463 conditions, 3022 events. 1954/3022 cut-off events. For 139305/139308 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 15167 event pairs, 524 based on Foata normal form. 2/3020 useless extension candidates. Maximal degree in co-relation 22411. Up to 2556 conditions per place. [2024-06-21 16:46:22,373 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 93 selfloop transitions, 92 changer transitions 0/191 dead transitions. [2024-06-21 16:46:22,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 191 transitions, 2095 flow [2024-06-21 16:46:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:22,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-21 16:46:22,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-21 16:46:22,374 INFO L175 Difference]: Start difference. First operand has 132 places, 156 transitions, 1315 flow. Second operand 9 states and 174 transitions. [2024-06-21 16:46:22,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 191 transitions, 2095 flow [2024-06-21 16:46:22,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 191 transitions, 1879 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-21 16:46:22,437 INFO L231 Difference]: Finished difference. Result has 134 places, 162 transitions, 1521 flow [2024-06-21 16:46:22,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1521, PETRI_PLACES=134, PETRI_TRANSITIONS=162} [2024-06-21 16:46:22,438 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2024-06-21 16:46:22,438 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 162 transitions, 1521 flow [2024-06-21 16:46:22,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:22,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:22,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:22,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 16:46:22,439 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:22,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:22,439 INFO L85 PathProgramCache]: Analyzing trace with hash 876403722, now seen corresponding path program 3 times [2024-06-21 16:46:22,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:22,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720895257] [2024-06-21 16:46:22,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:22,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:23,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:23,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720895257] [2024-06-21 16:46:23,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720895257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:23,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:23,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:23,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236171494] [2024-06-21 16:46:23,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:23,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:23,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:23,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:23,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:23,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:23,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 162 transitions, 1521 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:23,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:23,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:23,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:23,884 INFO L124 PetriNetUnfolderBase]: 1971/3052 cut-off events. [2024-06-21 16:46:23,884 INFO L125 PetriNetUnfolderBase]: For 150242/150247 co-relation queries the response was YES. [2024-06-21 16:46:23,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23161 conditions, 3052 events. 1971/3052 cut-off events. For 150242/150247 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15383 event pairs, 517 based on Foata normal form. 8/3057 useless extension candidates. Maximal degree in co-relation 23108. Up to 2789 conditions per place. [2024-06-21 16:46:23,906 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 154 selfloop transitions, 32 changer transitions 0/192 dead transitions. [2024-06-21 16:46:23,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 192 transitions, 2035 flow [2024-06-21 16:46:23,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-21 16:46:23,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-21 16:46:23,907 INFO L175 Difference]: Start difference. First operand has 134 places, 162 transitions, 1521 flow. Second operand 9 states and 167 transitions. [2024-06-21 16:46:23,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 192 transitions, 2035 flow [2024-06-21 16:46:23,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 192 transitions, 1863 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-21 16:46:23,983 INFO L231 Difference]: Finished difference. Result has 138 places, 164 transitions, 1496 flow [2024-06-21 16:46:23,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1496, PETRI_PLACES=138, PETRI_TRANSITIONS=164} [2024-06-21 16:46:23,983 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2024-06-21 16:46:23,983 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 164 transitions, 1496 flow [2024-06-21 16:46:23,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:23,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:23,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:23,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 16:46:23,985 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:23,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:23,986 INFO L85 PathProgramCache]: Analyzing trace with hash 884974602, now seen corresponding path program 4 times [2024-06-21 16:46:23,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:23,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729523774] [2024-06-21 16:46:23,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:23,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:24,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:24,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729523774] [2024-06-21 16:46:24,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729523774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:24,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:24,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:24,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778885172] [2024-06-21 16:46:24,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:24,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:24,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:24,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:25,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:25,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 164 transitions, 1496 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:25,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:25,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:25,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:25,577 INFO L124 PetriNetUnfolderBase]: 1988/3079 cut-off events. [2024-06-21 16:46:25,577 INFO L125 PetriNetUnfolderBase]: For 158597/158602 co-relation queries the response was YES. [2024-06-21 16:46:25,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23697 conditions, 3079 events. 1988/3079 cut-off events. For 158597/158602 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15587 event pairs, 474 based on Foata normal form. 8/3084 useless extension candidates. Maximal degree in co-relation 23642. Up to 2679 conditions per place. [2024-06-21 16:46:25,599 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 141 selfloop transitions, 52 changer transitions 0/199 dead transitions. [2024-06-21 16:46:25,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 199 transitions, 2232 flow [2024-06-21 16:46:25,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-21 16:46:25,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-21 16:46:25,601 INFO L175 Difference]: Start difference. First operand has 138 places, 164 transitions, 1496 flow. Second operand 9 states and 171 transitions. [2024-06-21 16:46:25,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 199 transitions, 2232 flow [2024-06-21 16:46:25,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 199 transitions, 2103 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-21 16:46:25,694 INFO L231 Difference]: Finished difference. Result has 140 places, 168 transitions, 1634 flow [2024-06-21 16:46:25,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1634, PETRI_PLACES=140, PETRI_TRANSITIONS=168} [2024-06-21 16:46:25,695 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 97 predicate places. [2024-06-21 16:46:25,695 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 168 transitions, 1634 flow [2024-06-21 16:46:25,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:25,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:25,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:25,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 16:46:25,695 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:25,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:25,696 INFO L85 PathProgramCache]: Analyzing trace with hash 648502324, now seen corresponding path program 10 times [2024-06-21 16:46:25,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:25,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211226742] [2024-06-21 16:46:25,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:25,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:26,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:26,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211226742] [2024-06-21 16:46:26,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211226742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:26,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:26,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:26,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102738304] [2024-06-21 16:46:26,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:26,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:26,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:26,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:26,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:26,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:26,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 168 transitions, 1634 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:26,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:26,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:26,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:27,302 INFO L124 PetriNetUnfolderBase]: 1983/3069 cut-off events. [2024-06-21 16:46:27,303 INFO L125 PetriNetUnfolderBase]: For 163691/163694 co-relation queries the response was YES. [2024-06-21 16:46:27,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23867 conditions, 3069 events. 1983/3069 cut-off events. For 163691/163694 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15429 event pairs, 524 based on Foata normal form. 2/3067 useless extension candidates. Maximal degree in co-relation 23811. Up to 2704 conditions per place. [2024-06-21 16:46:27,324 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 129 selfloop transitions, 60 changer transitions 0/195 dead transitions. [2024-06-21 16:46:27,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 195 transitions, 2080 flow [2024-06-21 16:46:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-21 16:46:27,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-21 16:46:27,326 INFO L175 Difference]: Start difference. First operand has 140 places, 168 transitions, 1634 flow. Second operand 9 states and 173 transitions. [2024-06-21 16:46:27,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 195 transitions, 2080 flow [2024-06-21 16:46:27,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 195 transitions, 1874 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-21 16:46:27,495 INFO L231 Difference]: Finished difference. Result has 142 places, 168 transitions, 1556 flow [2024-06-21 16:46:27,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1556, PETRI_PLACES=142, PETRI_TRANSITIONS=168} [2024-06-21 16:46:27,495 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2024-06-21 16:46:27,496 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 168 transitions, 1556 flow [2024-06-21 16:46:27,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:27,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:27,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:27,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 16:46:27,496 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:27,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash 648502572, now seen corresponding path program 5 times [2024-06-21 16:46:27,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:27,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123371803] [2024-06-21 16:46:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:27,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:28,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:28,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123371803] [2024-06-21 16:46:28,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123371803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:28,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:28,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:46:28,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883694596] [2024-06-21 16:46:28,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:28,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:46:28,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:28,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:46:28,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:46:28,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:28,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 168 transitions, 1556 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:28,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:28,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:28,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:28,980 INFO L124 PetriNetUnfolderBase]: 1975/3060 cut-off events. [2024-06-21 16:46:28,980 INFO L125 PetriNetUnfolderBase]: For 166091/166096 co-relation queries the response was YES. [2024-06-21 16:46:28,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23425 conditions, 3060 events. 1975/3060 cut-off events. For 166091/166096 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15419 event pairs, 515 based on Foata normal form. 8/3065 useless extension candidates. Maximal degree in co-relation 23369. Up to 2797 conditions per place. [2024-06-21 16:46:29,004 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 159 selfloop transitions, 31 changer transitions 0/196 dead transitions. [2024-06-21 16:46:29,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 196 transitions, 2006 flow [2024-06-21 16:46:29,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:46:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:46:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-21 16:46:29,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 16:46:29,005 INFO L175 Difference]: Start difference. First operand has 142 places, 168 transitions, 1556 flow. Second operand 9 states and 168 transitions. [2024-06-21 16:46:29,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 196 transitions, 2006 flow [2024-06-21 16:46:29,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 196 transitions, 1728 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-21 16:46:29,127 INFO L231 Difference]: Finished difference. Result has 143 places, 168 transitions, 1347 flow [2024-06-21 16:46:29,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1347, PETRI_PLACES=143, PETRI_TRANSITIONS=168} [2024-06-21 16:46:29,128 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 100 predicate places. [2024-06-21 16:46:29,128 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 168 transitions, 1347 flow [2024-06-21 16:46:29,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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) [2024-06-21 16:46:29,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:29,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:29,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 16:46:29,128 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:29,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:29,129 INFO L85 PathProgramCache]: Analyzing trace with hash 879845692, now seen corresponding path program 2 times [2024-06-21 16:46:29,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:29,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537486328] [2024-06-21 16:46:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:29,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:29,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:29,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537486328] [2024-06-21 16:46:29,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537486328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:29,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:29,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:46:29,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273485201] [2024-06-21 16:46:29,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:29,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:46:29,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:29,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:46:29,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:46:29,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:29,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 168 transitions, 1347 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-21 16:46:29,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:29,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:29,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:30,270 INFO L124 PetriNetUnfolderBase]: 1969/3049 cut-off events. [2024-06-21 16:46:30,271 INFO L125 PetriNetUnfolderBase]: For 168723/168726 co-relation queries the response was YES. [2024-06-21 16:46:30,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23157 conditions, 3049 events. 1969/3049 cut-off events. For 168723/168726 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15357 event pairs, 521 based on Foata normal form. 2/3047 useless extension candidates. Maximal degree in co-relation 23100. Up to 2847 conditions per place. [2024-06-21 16:46:30,296 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 155 selfloop transitions, 18 changer transitions 0/179 dead transitions. [2024-06-21 16:46:30,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 179 transitions, 1743 flow [2024-06-21 16:46:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:46:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:46:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-21 16:46:30,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-21 16:46:30,299 INFO L175 Difference]: Start difference. First operand has 143 places, 168 transitions, 1347 flow. Second operand 6 states and 111 transitions. [2024-06-21 16:46:30,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 179 transitions, 1743 flow [2024-06-21 16:46:30,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 179 transitions, 1631 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 16:46:30,407 INFO L231 Difference]: Finished difference. Result has 141 places, 168 transitions, 1277 flow [2024-06-21 16:46:30,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1277, PETRI_PLACES=141, PETRI_TRANSITIONS=168} [2024-06-21 16:46:30,408 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-06-21 16:46:30,408 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 168 transitions, 1277 flow [2024-06-21 16:46:30,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2024-06-21 16:46:30,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:30,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:30,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 16:46:30,409 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:30,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:30,409 INFO L85 PathProgramCache]: Analyzing trace with hash 874137724, now seen corresponding path program 1 times [2024-06-21 16:46:30,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:30,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672947405] [2024-06-21 16:46:30,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:30,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:30,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:30,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672947405] [2024-06-21 16:46:30,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672947405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:30,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:30,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:46:30,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788059594] [2024-06-21 16:46:30,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:30,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:46:30,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:30,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:46:30,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:46:30,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:46:30,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 168 transitions, 1277 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-06-21 16:46:30,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:30,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:46:30,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:31,361 INFO L124 PetriNetUnfolderBase]: 1767/2828 cut-off events. [2024-06-21 16:46:31,361 INFO L125 PetriNetUnfolderBase]: For 150051/150051 co-relation queries the response was YES. [2024-06-21 16:46:31,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20687 conditions, 2828 events. 1767/2828 cut-off events. For 150051/150051 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14734 event pairs, 432 based on Foata normal form. 1/2827 useless extension candidates. Maximal degree in co-relation 20629. Up to 2585 conditions per place. [2024-06-21 16:46:31,382 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 164 selfloop transitions, 16 changer transitions 0/187 dead transitions. [2024-06-21 16:46:31,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 187 transitions, 1805 flow [2024-06-21 16:46:31,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:46:31,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:46:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-21 16:46:31,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-21 16:46:31,383 INFO L175 Difference]: Start difference. First operand has 141 places, 168 transitions, 1277 flow. Second operand 6 states and 117 transitions. [2024-06-21 16:46:31,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 187 transitions, 1805 flow [2024-06-21 16:46:31,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 187 transitions, 1759 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-21 16:46:31,453 INFO L231 Difference]: Finished difference. Result has 142 places, 174 transitions, 1339 flow [2024-06-21 16:46:31,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1339, PETRI_PLACES=142, PETRI_TRANSITIONS=174} [2024-06-21 16:46:31,453 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2024-06-21 16:46:31,453 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 174 transitions, 1339 flow [2024-06-21 16:46:31,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-06-21 16:46:31,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:31,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:31,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 16:46:31,454 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:31,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:31,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1853123614, now seen corresponding path program 2 times [2024-06-21 16:46:31,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:31,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130185228] [2024-06-21 16:46:31,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:31,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:31,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:31,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130185228] [2024-06-21 16:46:31,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130185228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:31,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:31,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:46:31,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540781903] [2024-06-21 16:46:31,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:31,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:46:31,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:46:31,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:46:32,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:46:32,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 174 transitions, 1339 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-06-21 16:46:32,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:32,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:46:32,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:32,472 INFO L124 PetriNetUnfolderBase]: 1764/2824 cut-off events. [2024-06-21 16:46:32,472 INFO L125 PetriNetUnfolderBase]: For 157002/157002 co-relation queries the response was YES. [2024-06-21 16:46:32,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21088 conditions, 2824 events. 1764/2824 cut-off events. For 157002/157002 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 14724 event pairs, 431 based on Foata normal form. 1/2823 useless extension candidates. Maximal degree in co-relation 21029. Up to 2594 conditions per place. [2024-06-21 16:46:32,494 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 165 selfloop transitions, 11 changer transitions 0/183 dead transitions. [2024-06-21 16:46:32,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 183 transitions, 1713 flow [2024-06-21 16:46:32,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:46:32,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:46:32,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-21 16:46:32,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-21 16:46:32,496 INFO L175 Difference]: Start difference. First operand has 142 places, 174 transitions, 1339 flow. Second operand 6 states and 111 transitions. [2024-06-21 16:46:32,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 183 transitions, 1713 flow [2024-06-21 16:46:32,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 183 transitions, 1655 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-21 16:46:32,579 INFO L231 Difference]: Finished difference. Result has 146 places, 174 transitions, 1309 flow [2024-06-21 16:46:32,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1309, PETRI_PLACES=146, PETRI_TRANSITIONS=174} [2024-06-21 16:46:32,580 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 103 predicate places. [2024-06-21 16:46:32,580 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 174 transitions, 1309 flow [2024-06-21 16:46:32,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-06-21 16:46:32,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:32,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:32,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 16:46:32,581 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:32,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:32,581 INFO L85 PathProgramCache]: Analyzing trace with hash 879859580, now seen corresponding path program 1 times [2024-06-21 16:46:32,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:32,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038805321] [2024-06-21 16:46:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:32,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:33,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:33,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038805321] [2024-06-21 16:46:33,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038805321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:33,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:33,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:46:33,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444730] [2024-06-21 16:46:33,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:33,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:46:33,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:33,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:46:33,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:46:33,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:33,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 174 transitions, 1309 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:46:33,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:33,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:33,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:33,827 INFO L124 PetriNetUnfolderBase]: 1874/2932 cut-off events. [2024-06-21 16:46:33,827 INFO L125 PetriNetUnfolderBase]: For 163242/163242 co-relation queries the response was YES. [2024-06-21 16:46:33,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21910 conditions, 2932 events. 1874/2932 cut-off events. For 163242/163242 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 14839 event pairs, 467 based on Foata normal form. 2/2932 useless extension candidates. Maximal degree in co-relation 21849. Up to 2785 conditions per place. [2024-06-21 16:46:33,851 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 169 selfloop transitions, 14 changer transitions 0/188 dead transitions. [2024-06-21 16:46:33,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 188 transitions, 1733 flow [2024-06-21 16:46:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:46:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:46:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-21 16:46:33,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41156462585034015 [2024-06-21 16:46:33,852 INFO L175 Difference]: Start difference. First operand has 146 places, 174 transitions, 1309 flow. Second operand 7 states and 121 transitions. [2024-06-21 16:46:33,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 188 transitions, 1733 flow [2024-06-21 16:46:33,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 188 transitions, 1699 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 16:46:33,965 INFO L231 Difference]: Finished difference. Result has 147 places, 177 transitions, 1347 flow [2024-06-21 16:46:33,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1347, PETRI_PLACES=147, PETRI_TRANSITIONS=177} [2024-06-21 16:46:33,965 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 104 predicate places. [2024-06-21 16:46:33,965 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 177 transitions, 1347 flow [2024-06-21 16:46:33,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:46:33,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:33,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:33,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 16:46:33,966 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:33,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:33,966 INFO L85 PathProgramCache]: Analyzing trace with hash 933808018, now seen corresponding path program 1 times [2024-06-21 16:46:33,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:33,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787343110] [2024-06-21 16:46:33,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:33,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:35,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:35,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787343110] [2024-06-21 16:46:35,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787343110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:35,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:35,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:46:35,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103736419] [2024-06-21 16:46:35,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:35,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:46:35,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:35,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:46:35,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:46:35,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:35,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 177 transitions, 1347 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:35,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:35,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:35,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:35,932 INFO L124 PetriNetUnfolderBase]: 2023/3142 cut-off events. [2024-06-21 16:46:35,933 INFO L125 PetriNetUnfolderBase]: For 211151/211151 co-relation queries the response was YES. [2024-06-21 16:46:35,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25113 conditions, 3142 events. 2023/3142 cut-off events. For 211151/211151 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 15989 event pairs, 510 based on Foata normal form. 16/3156 useless extension candidates. Maximal degree in co-relation 25052. Up to 2837 conditions per place. [2024-06-21 16:46:35,961 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 192 selfloop transitions, 21 changer transitions 0/219 dead transitions. [2024-06-21 16:46:35,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 219 transitions, 1993 flow [2024-06-21 16:46:35,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:46:35,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:46:35,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-21 16:46:35,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-21 16:46:35,962 INFO L175 Difference]: Start difference. First operand has 147 places, 177 transitions, 1347 flow. Second operand 10 states and 189 transitions. [2024-06-21 16:46:35,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 219 transitions, 1993 flow [2024-06-21 16:46:36,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 219 transitions, 1943 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-21 16:46:36,104 INFO L231 Difference]: Finished difference. Result has 152 places, 178 transitions, 1410 flow [2024-06-21 16:46:36,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1410, PETRI_PLACES=152, PETRI_TRANSITIONS=178} [2024-06-21 16:46:36,105 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 109 predicate places. [2024-06-21 16:46:36,105 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 178 transitions, 1410 flow [2024-06-21 16:46:36,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:36,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:36,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:36,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 16:46:36,106 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:36,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash 218229372, now seen corresponding path program 2 times [2024-06-21 16:46:36,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:36,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435256907] [2024-06-21 16:46:36,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:37,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:37,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435256907] [2024-06-21 16:46:37,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435256907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:37,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:37,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:46:37,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952102357] [2024-06-21 16:46:37,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:37,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:46:37,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:37,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:46:37,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:46:37,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:37,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 178 transitions, 1410 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:37,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:37,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:37,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:38,036 INFO L124 PetriNetUnfolderBase]: 2098/3277 cut-off events. [2024-06-21 16:46:38,036 INFO L125 PetriNetUnfolderBase]: For 226055/226055 co-relation queries the response was YES. [2024-06-21 16:46:38,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26422 conditions, 3277 events. 2098/3277 cut-off events. For 226055/226055 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16955 event pairs, 532 based on Foata normal form. 16/3291 useless extension candidates. Maximal degree in co-relation 26360. Up to 2922 conditions per place. [2024-06-21 16:46:38,062 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 186 selfloop transitions, 27 changer transitions 0/219 dead transitions. [2024-06-21 16:46:38,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 219 transitions, 2058 flow [2024-06-21 16:46:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:46:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:46:38,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-21 16:46:38,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-21 16:46:38,064 INFO L175 Difference]: Start difference. First operand has 152 places, 178 transitions, 1410 flow. Second operand 10 states and 189 transitions. [2024-06-21 16:46:38,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 219 transitions, 2058 flow [2024-06-21 16:46:38,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 219 transitions, 1995 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 16:46:38,210 INFO L231 Difference]: Finished difference. Result has 154 places, 180 transitions, 1482 flow [2024-06-21 16:46:38,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1482, PETRI_PLACES=154, PETRI_TRANSITIONS=180} [2024-06-21 16:46:38,211 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-21 16:46:38,211 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 180 transitions, 1482 flow [2024-06-21 16:46:38,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:38,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:38,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:38,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 16:46:38,212 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:38,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:38,212 INFO L85 PathProgramCache]: Analyzing trace with hash -139816958, now seen corresponding path program 3 times [2024-06-21 16:46:38,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:38,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431714351] [2024-06-21 16:46:38,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:38,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:39,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:39,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:39,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431714351] [2024-06-21 16:46:39,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431714351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:39,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:39,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:46:39,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303351701] [2024-06-21 16:46:39,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:39,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:46:39,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:39,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:46:39,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:46:39,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:39,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 180 transitions, 1482 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:39,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:39,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:39,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:40,106 INFO L124 PetriNetUnfolderBase]: 2266/3561 cut-off events. [2024-06-21 16:46:40,106 INFO L125 PetriNetUnfolderBase]: For 260567/260567 co-relation queries the response was YES. [2024-06-21 16:46:40,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29959 conditions, 3561 events. 2266/3561 cut-off events. For 260567/260567 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 19040 event pairs, 564 based on Foata normal form. 12/3571 useless extension candidates. Maximal degree in co-relation 29896. Up to 2848 conditions per place. [2024-06-21 16:46:40,133 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 171 selfloop transitions, 49 changer transitions 0/226 dead transitions. [2024-06-21 16:46:40,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 226 transitions, 2459 flow [2024-06-21 16:46:40,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:46:40,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:46:40,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-21 16:46:40,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-21 16:46:40,135 INFO L175 Difference]: Start difference. First operand has 154 places, 180 transitions, 1482 flow. Second operand 10 states and 194 transitions. [2024-06-21 16:46:40,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 226 transitions, 2459 flow [2024-06-21 16:46:40,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 226 transitions, 2361 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 16:46:40,324 INFO L231 Difference]: Finished difference. Result has 157 places, 183 transitions, 1705 flow [2024-06-21 16:46:40,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1705, PETRI_PLACES=157, PETRI_TRANSITIONS=183} [2024-06-21 16:46:40,324 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-06-21 16:46:40,324 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 183 transitions, 1705 flow [2024-06-21 16:46:40,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:40,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:40,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:40,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 16:46:40,327 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:40,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:40,328 INFO L85 PathProgramCache]: Analyzing trace with hash -139824398, now seen corresponding path program 4 times [2024-06-21 16:46:40,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:40,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254897309] [2024-06-21 16:46:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:40,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:41,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:41,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:41,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254897309] [2024-06-21 16:46:41,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254897309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:41,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:41,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:46:41,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106262048] [2024-06-21 16:46:41,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:41,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:46:41,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:41,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:46:41,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:46:41,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:41,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 183 transitions, 1705 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:41,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:41,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:41,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:42,207 INFO L124 PetriNetUnfolderBase]: 2324/3659 cut-off events. [2024-06-21 16:46:42,207 INFO L125 PetriNetUnfolderBase]: For 277449/277449 co-relation queries the response was YES. [2024-06-21 16:46:42,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31147 conditions, 3659 events. 2324/3659 cut-off events. For 277449/277449 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19829 event pairs, 593 based on Foata normal form. 16/3673 useless extension candidates. Maximal degree in co-relation 31082. Up to 3263 conditions per place. [2024-06-21 16:46:42,240 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 171 selfloop transitions, 45 changer transitions 0/222 dead transitions. [2024-06-21 16:46:42,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 222 transitions, 2356 flow [2024-06-21 16:46:42,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:46:42,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:46:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-21 16:46:42,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-21 16:46:42,241 INFO L175 Difference]: Start difference. First operand has 157 places, 183 transitions, 1705 flow. Second operand 10 states and 190 transitions. [2024-06-21 16:46:42,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 222 transitions, 2356 flow [2024-06-21 16:46:42,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 222 transitions, 2264 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-21 16:46:42,484 INFO L231 Difference]: Finished difference. Result has 161 places, 184 transitions, 1781 flow [2024-06-21 16:46:42,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1781, PETRI_PLACES=161, PETRI_TRANSITIONS=184} [2024-06-21 16:46:42,485 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 118 predicate places. [2024-06-21 16:46:42,485 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 184 transitions, 1781 flow [2024-06-21 16:46:42,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:42,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:42,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:42,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 16:46:42,486 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:42,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:42,486 INFO L85 PathProgramCache]: Analyzing trace with hash -145388588, now seen corresponding path program 5 times [2024-06-21 16:46:42,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:42,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950070542] [2024-06-21 16:46:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:42,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:43,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:43,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950070542] [2024-06-21 16:46:43,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950070542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:43,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:43,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:46:43,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659694734] [2024-06-21 16:46:43,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:43,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:46:43,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:43,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:46:43,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:46:43,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:43,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 184 transitions, 1781 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:43,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:43,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:43,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:44,370 INFO L124 PetriNetUnfolderBase]: 2296/3615 cut-off events. [2024-06-21 16:46:44,371 INFO L125 PetriNetUnfolderBase]: For 273154/273154 co-relation queries the response was YES. [2024-06-21 16:46:44,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30217 conditions, 3615 events. 2296/3615 cut-off events. For 273154/273154 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 19485 event pairs, 577 based on Foata normal form. 16/3629 useless extension candidates. Maximal degree in co-relation 30150. Up to 3288 conditions per place. [2024-06-21 16:46:44,401 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 190 selfloop transitions, 26 changer transitions 0/222 dead transitions. [2024-06-21 16:46:44,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 222 transitions, 2363 flow [2024-06-21 16:46:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:46:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:46:44,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-21 16:46:44,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-21 16:46:44,402 INFO L175 Difference]: Start difference. First operand has 161 places, 184 transitions, 1781 flow. Second operand 10 states and 188 transitions. [2024-06-21 16:46:44,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 222 transitions, 2363 flow [2024-06-21 16:46:44,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 222 transitions, 2226 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 16:46:44,618 INFO L231 Difference]: Finished difference. Result has 163 places, 184 transitions, 1703 flow [2024-06-21 16:46:44,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1703, PETRI_PLACES=163, PETRI_TRANSITIONS=184} [2024-06-21 16:46:44,618 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 120 predicate places. [2024-06-21 16:46:44,618 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 184 transitions, 1703 flow [2024-06-21 16:46:44,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:44,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:44,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:44,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 16:46:44,620 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:44,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:44,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1151151484, now seen corresponding path program 1 times [2024-06-21 16:46:44,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:44,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446672153] [2024-06-21 16:46:44,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:44,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:45,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:45,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446672153] [2024-06-21 16:46:45,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446672153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:45,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:45,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:46:45,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017523208] [2024-06-21 16:46:45,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:45,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:46:45,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:45,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:46:45,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:46:45,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:46:45,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 184 transitions, 1703 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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) [2024-06-21 16:46:45,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:45,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:46:45,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:45,954 INFO L124 PetriNetUnfolderBase]: 2419/3742 cut-off events. [2024-06-21 16:46:45,954 INFO L125 PetriNetUnfolderBase]: For 264394/264394 co-relation queries the response was YES. [2024-06-21 16:46:45,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30941 conditions, 3742 events. 2419/3742 cut-off events. For 264394/264394 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 19771 event pairs, 617 based on Foata normal form. 2/3742 useless extension candidates. Maximal degree in co-relation 30873. Up to 3594 conditions per place. [2024-06-21 16:46:45,988 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 181 selfloop transitions, 25 changer transitions 0/210 dead transitions. [2024-06-21 16:46:45,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 210 transitions, 2387 flow [2024-06-21 16:46:45,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:46:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:46:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-21 16:46:45,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-21 16:46:45,990 INFO L175 Difference]: Start difference. First operand has 163 places, 184 transitions, 1703 flow. Second operand 7 states and 128 transitions. [2024-06-21 16:46:45,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 210 transitions, 2387 flow [2024-06-21 16:46:46,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 210 transitions, 2328 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 16:46:46,203 INFO L231 Difference]: Finished difference. Result has 162 places, 190 transitions, 1806 flow [2024-06-21 16:46:46,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1806, PETRI_PLACES=162, PETRI_TRANSITIONS=190} [2024-06-21 16:46:46,205 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 119 predicate places. [2024-06-21 16:46:46,205 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 190 transitions, 1806 flow [2024-06-21 16:46:46,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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) [2024-06-21 16:46:46,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:46,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:46,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 16:46:46,206 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:46,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:46,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1187590650, now seen corresponding path program 6 times [2024-06-21 16:46:46,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:46,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431490492] [2024-06-21 16:46:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:46,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:47,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:47,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431490492] [2024-06-21 16:46:47,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431490492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:47,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:47,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:46:47,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857659569] [2024-06-21 16:46:47,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:47,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:46:47,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:47,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:46:47,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:46:47,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:47,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 190 transitions, 1806 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:47,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:47,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:47,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:48,311 INFO L124 PetriNetUnfolderBase]: 2376/3748 cut-off events. [2024-06-21 16:46:48,312 INFO L125 PetriNetUnfolderBase]: For 293847/293850 co-relation queries the response was YES. [2024-06-21 16:46:48,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31782 conditions, 3748 events. 2376/3748 cut-off events. For 293847/293850 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 20465 event pairs, 607 based on Foata normal form. 16/3760 useless extension candidates. Maximal degree in co-relation 31713. Up to 3267 conditions per place. [2024-06-21 16:46:48,340 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 157 selfloop transitions, 61 changer transitions 0/226 dead transitions. [2024-06-21 16:46:48,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 226 transitions, 2454 flow [2024-06-21 16:46:48,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:46:48,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:46:48,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-21 16:46:48,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-21 16:46:48,341 INFO L175 Difference]: Start difference. First operand has 162 places, 190 transitions, 1806 flow. Second operand 10 states and 192 transitions. [2024-06-21 16:46:48,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 226 transitions, 2454 flow [2024-06-21 16:46:48,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 226 transitions, 2395 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-21 16:46:48,555 INFO L231 Difference]: Finished difference. Result has 169 places, 191 transitions, 1946 flow [2024-06-21 16:46:48,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1946, PETRI_PLACES=169, PETRI_TRANSITIONS=191} [2024-06-21 16:46:48,555 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-06-21 16:46:48,555 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 191 transitions, 1946 flow [2024-06-21 16:46:48,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:48,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:48,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:48,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 16:46:48,556 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:48,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:48,556 INFO L85 PathProgramCache]: Analyzing trace with hash 242310892, now seen corresponding path program 7 times [2024-06-21 16:46:48,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:48,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367162845] [2024-06-21 16:46:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:48,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:49,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:49,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367162845] [2024-06-21 16:46:49,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367162845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:49,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:49,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:46:49,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844898304] [2024-06-21 16:46:49,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:49,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:46:49,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:49,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:46:49,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:46:49,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:49,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 191 transitions, 1946 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:49,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:49,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:49,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:50,464 INFO L124 PetriNetUnfolderBase]: 2503/3961 cut-off events. [2024-06-21 16:46:50,465 INFO L125 PetriNetUnfolderBase]: For 330670/330673 co-relation queries the response was YES. [2024-06-21 16:46:50,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35124 conditions, 3961 events. 2503/3961 cut-off events. For 330670/330673 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22055 event pairs, 628 based on Foata normal form. 12/3969 useless extension candidates. Maximal degree in co-relation 35053. Up to 3255 conditions per place. [2024-06-21 16:46:50,501 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 161 selfloop transitions, 64 changer transitions 0/233 dead transitions. [2024-06-21 16:46:50,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 233 transitions, 2888 flow [2024-06-21 16:46:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:46:50,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:46:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-21 16:46:50,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-21 16:46:50,502 INFO L175 Difference]: Start difference. First operand has 169 places, 191 transitions, 1946 flow. Second operand 10 states and 196 transitions. [2024-06-21 16:46:50,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 233 transitions, 2888 flow [2024-06-21 16:46:50,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 233 transitions, 2739 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 16:46:50,757 INFO L231 Difference]: Finished difference. Result has 171 places, 193 transitions, 2073 flow [2024-06-21 16:46:50,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2073, PETRI_PLACES=171, PETRI_TRANSITIONS=193} [2024-06-21 16:46:50,757 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2024-06-21 16:46:50,758 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 193 transitions, 2073 flow [2024-06-21 16:46:50,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:50,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:50,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:50,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 16:46:50,758 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:50,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:50,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1376827472, now seen corresponding path program 8 times [2024-06-21 16:46:50,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:50,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52921307] [2024-06-21 16:46:50,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:50,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:52,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:52,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52921307] [2024-06-21 16:46:52,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52921307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:52,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:52,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:46:52,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275434281] [2024-06-21 16:46:52,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:52,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:46:52,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:52,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:46:52,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:46:52,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:52,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 193 transitions, 2073 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:52,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:52,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:52,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:53,291 INFO L124 PetriNetUnfolderBase]: 2619/4170 cut-off events. [2024-06-21 16:46:53,291 INFO L125 PetriNetUnfolderBase]: For 367241/367246 co-relation queries the response was YES. [2024-06-21 16:46:53,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37071 conditions, 4170 events. 2619/4170 cut-off events. For 367241/367246 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 23669 event pairs, 666 based on Foata normal form. 32/4199 useless extension candidates. Maximal degree in co-relation 36999. Up to 3649 conditions per place. [2024-06-21 16:46:53,322 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 175 selfloop transitions, 49 changer transitions 0/232 dead transitions. [2024-06-21 16:46:53,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 232 transitions, 2817 flow [2024-06-21 16:46:53,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:46:53,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:46:53,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-21 16:46:53,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-21 16:46:53,341 INFO L175 Difference]: Start difference. First operand has 171 places, 193 transitions, 2073 flow. Second operand 10 states and 190 transitions. [2024-06-21 16:46:53,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 232 transitions, 2817 flow [2024-06-21 16:46:53,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 232 transitions, 2701 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-21 16:46:53,591 INFO L231 Difference]: Finished difference. Result has 175 places, 196 transitions, 2219 flow [2024-06-21 16:46:53,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1959, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2219, PETRI_PLACES=175, PETRI_TRANSITIONS=196} [2024-06-21 16:46:53,592 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2024-06-21 16:46:53,592 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 196 transitions, 2219 flow [2024-06-21 16:46:53,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:53,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:53,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:53,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 16:46:53,593 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:53,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:53,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1655213022, now seen corresponding path program 9 times [2024-06-21 16:46:53,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:53,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855043761] [2024-06-21 16:46:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:53,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:54,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:54,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855043761] [2024-06-21 16:46:54,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855043761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:54,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:54,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:46:54,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206507842] [2024-06-21 16:46:54,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:54,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:46:54,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:46:54,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:46:54,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:54,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 196 transitions, 2219 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:54,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:54,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:54,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:55,627 INFO L124 PetriNetUnfolderBase]: 2746/4390 cut-off events. [2024-06-21 16:46:55,628 INFO L125 PetriNetUnfolderBase]: For 393353/393356 co-relation queries the response was YES. [2024-06-21 16:46:55,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40274 conditions, 4390 events. 2746/4390 cut-off events. For 393353/393356 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 25407 event pairs, 699 based on Foata normal form. 12/4398 useless extension candidates. Maximal degree in co-relation 40200. Up to 3667 conditions per place. [2024-06-21 16:46:55,669 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 135 selfloop transitions, 95 changer transitions 0/238 dead transitions. [2024-06-21 16:46:55,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 238 transitions, 3187 flow [2024-06-21 16:46:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:46:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:46:55,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-21 16:46:55,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-21 16:46:55,671 INFO L175 Difference]: Start difference. First operand has 175 places, 196 transitions, 2219 flow. Second operand 10 states and 196 transitions. [2024-06-21 16:46:55,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 238 transitions, 3187 flow [2024-06-21 16:46:56,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 238 transitions, 3037 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-21 16:46:56,075 INFO L231 Difference]: Finished difference. Result has 177 places, 198 transitions, 2415 flow [2024-06-21 16:46:56,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2415, PETRI_PLACES=177, PETRI_TRANSITIONS=198} [2024-06-21 16:46:56,075 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 134 predicate places. [2024-06-21 16:46:56,075 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 198 transitions, 2415 flow [2024-06-21 16:46:56,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:56,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:56,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:56,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 16:46:56,076 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:56,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:56,076 INFO L85 PathProgramCache]: Analyzing trace with hash 893968310, now seen corresponding path program 10 times [2024-06-21 16:46:56,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:56,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202945515] [2024-06-21 16:46:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:56,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:57,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:57,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:57,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202945515] [2024-06-21 16:46:57,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202945515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:57,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:57,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:46:57,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035043867] [2024-06-21 16:46:57,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:57,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:46:57,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:57,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:46:57,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:46:57,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:57,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 198 transitions, 2415 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:57,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:57,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:57,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:46:58,145 INFO L124 PetriNetUnfolderBase]: 2873/4613 cut-off events. [2024-06-21 16:46:58,145 INFO L125 PetriNetUnfolderBase]: For 430958/430961 co-relation queries the response was YES. [2024-06-21 16:46:58,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43436 conditions, 4613 events. 2873/4613 cut-off events. For 430958/430961 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 27185 event pairs, 745 based on Foata normal form. 12/4621 useless extension candidates. Maximal degree in co-relation 43361. Up to 3978 conditions per place. [2024-06-21 16:46:58,190 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 169 selfloop transitions, 63 changer transitions 0/240 dead transitions. [2024-06-21 16:46:58,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 240 transitions, 3395 flow [2024-06-21 16:46:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:46:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:46:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-21 16:46:58,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-21 16:46:58,193 INFO L175 Difference]: Start difference. First operand has 177 places, 198 transitions, 2415 flow. Second operand 10 states and 195 transitions. [2024-06-21 16:46:58,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 240 transitions, 3395 flow [2024-06-21 16:46:58,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 240 transitions, 3233 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-21 16:46:58,732 INFO L231 Difference]: Finished difference. Result has 181 places, 200 transitions, 2539 flow [2024-06-21 16:46:58,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2253, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2539, PETRI_PLACES=181, PETRI_TRANSITIONS=200} [2024-06-21 16:46:58,732 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 138 predicate places. [2024-06-21 16:46:58,733 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 200 transitions, 2539 flow [2024-06-21 16:46:58,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:58,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:46:58,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:46:58,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 16:46:58,738 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:46:58,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:46:58,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1371465092, now seen corresponding path program 11 times [2024-06-21 16:46:58,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:46:58,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751995030] [2024-06-21 16:46:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:46:58,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:46:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:46:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:46:59,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:46:59,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751995030] [2024-06-21 16:46:59,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751995030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:46:59,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:46:59,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:46:59,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28154631] [2024-06-21 16:46:59,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:46:59,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:46:59,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:46:59,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:46:59,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:46:59,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:46:59,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 200 transitions, 2539 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:46:59,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:46:59,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:46:59,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:00,999 INFO L124 PetriNetUnfolderBase]: 2845/4572 cut-off events. [2024-06-21 16:47:00,999 INFO L125 PetriNetUnfolderBase]: For 427344/427349 co-relation queries the response was YES. [2024-06-21 16:47:01,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42371 conditions, 4572 events. 2845/4572 cut-off events. For 427344/427349 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 26885 event pairs, 737 based on Foata normal form. 20/4589 useless extension candidates. Maximal degree in co-relation 42294. Up to 4118 conditions per place. [2024-06-21 16:47:01,039 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 181 selfloop transitions, 46 changer transitions 0/235 dead transitions. [2024-06-21 16:47:01,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 235 transitions, 3137 flow [2024-06-21 16:47:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:47:01,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:47:01,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-21 16:47:01,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-21 16:47:01,041 INFO L175 Difference]: Start difference. First operand has 181 places, 200 transitions, 2539 flow. Second operand 10 states and 190 transitions. [2024-06-21 16:47:01,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 235 transitions, 3137 flow [2024-06-21 16:47:01,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 235 transitions, 2983 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-21 16:47:01,551 INFO L231 Difference]: Finished difference. Result has 185 places, 200 transitions, 2484 flow [2024-06-21 16:47:01,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2385, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2484, PETRI_PLACES=185, PETRI_TRANSITIONS=200} [2024-06-21 16:47:01,552 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 142 predicate places. [2024-06-21 16:47:01,552 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 200 transitions, 2484 flow [2024-06-21 16:47:01,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:01,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:01,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:01,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 16:47:01,553 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:01,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:01,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1655205582, now seen corresponding path program 12 times [2024-06-21 16:47:01,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:01,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202411406] [2024-06-21 16:47:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:01,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:02,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:02,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202411406] [2024-06-21 16:47:02,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202411406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:02,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:02,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:47:02,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907463517] [2024-06-21 16:47:02,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:02,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:47:02,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:02,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:47:02,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:47:02,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:02,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 200 transitions, 2484 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:02,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:02,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:02,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:03,837 INFO L124 PetriNetUnfolderBase]: 2817/4525 cut-off events. [2024-06-21 16:47:03,837 INFO L125 PetriNetUnfolderBase]: For 411217/411220 co-relation queries the response was YES. [2024-06-21 16:47:03,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40939 conditions, 4525 events. 2817/4525 cut-off events. For 411217/411220 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 26593 event pairs, 723 based on Foata normal form. 16/4537 useless extension candidates. Maximal degree in co-relation 40860. Up to 3915 conditions per place. [2024-06-21 16:47:03,879 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 134 selfloop transitions, 93 changer transitions 0/235 dead transitions. [2024-06-21 16:47:03,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 235 transitions, 3082 flow [2024-06-21 16:47:03,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:47:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:47:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-21 16:47:03,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-21 16:47:03,881 INFO L175 Difference]: Start difference. First operand has 185 places, 200 transitions, 2484 flow. Second operand 10 states and 191 transitions. [2024-06-21 16:47:03,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 235 transitions, 3082 flow [2024-06-21 16:47:04,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 235 transitions, 2959 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 16:47:04,230 INFO L231 Difference]: Finished difference. Result has 187 places, 200 transitions, 2554 flow [2024-06-21 16:47:04,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2361, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2554, PETRI_PLACES=187, PETRI_TRANSITIONS=200} [2024-06-21 16:47:04,231 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-21 16:47:04,231 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 200 transitions, 2554 flow [2024-06-21 16:47:04,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:04,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:04,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:04,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 16:47:04,232 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:04,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:04,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1282695490, now seen corresponding path program 13 times [2024-06-21 16:47:04,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:04,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051403432] [2024-06-21 16:47:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:04,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:05,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:05,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051403432] [2024-06-21 16:47:05,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051403432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:05,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:05,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:47:05,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014259239] [2024-06-21 16:47:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:05,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:47:05,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:05,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:47:05,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:47:05,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:05,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 200 transitions, 2554 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:05,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:05,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:05,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:06,335 INFO L124 PetriNetUnfolderBase]: 2875/4623 cut-off events. [2024-06-21 16:47:06,335 INFO L125 PetriNetUnfolderBase]: For 427660/427663 co-relation queries the response was YES. [2024-06-21 16:47:06,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42174 conditions, 4623 events. 2875/4623 cut-off events. For 427660/427663 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 27338 event pairs, 733 based on Foata normal form. 16/4635 useless extension candidates. Maximal degree in co-relation 42094. Up to 4121 conditions per place. [2024-06-21 16:47:06,395 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 167 selfloop transitions, 61 changer transitions 0/236 dead transitions. [2024-06-21 16:47:06,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 236 transitions, 3226 flow [2024-06-21 16:47:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:47:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:47:06,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-21 16:47:06,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-21 16:47:06,417 INFO L175 Difference]: Start difference. First operand has 187 places, 200 transitions, 2554 flow. Second operand 10 states and 191 transitions. [2024-06-21 16:47:06,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 236 transitions, 3226 flow [2024-06-21 16:47:06,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 236 transitions, 3033 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 16:47:06,927 INFO L231 Difference]: Finished difference. Result has 188 places, 201 transitions, 2564 flow [2024-06-21 16:47:06,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2361, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2564, PETRI_PLACES=188, PETRI_TRANSITIONS=201} [2024-06-21 16:47:06,928 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 145 predicate places. [2024-06-21 16:47:06,928 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 201 transitions, 2564 flow [2024-06-21 16:47:06,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:06,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:06,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:06,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 16:47:06,929 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:06,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:06,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1398503262, now seen corresponding path program 14 times [2024-06-21 16:47:06,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:06,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849348554] [2024-06-21 16:47:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:06,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:08,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:08,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:08,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849348554] [2024-06-21 16:47:08,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849348554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:08,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:08,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:47:08,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654775049] [2024-06-21 16:47:08,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:08,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:47:08,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:08,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:47:08,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:47:08,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:08,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 201 transitions, 2564 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:08,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:08,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:08,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:09,152 INFO L124 PetriNetUnfolderBase]: 2847/4582 cut-off events. [2024-06-21 16:47:09,153 INFO L125 PetriNetUnfolderBase]: For 422750/422755 co-relation queries the response was YES. [2024-06-21 16:47:09,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41015 conditions, 4582 events. 2847/4582 cut-off events. For 422750/422755 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 27113 event pairs, 715 based on Foata normal form. 20/4599 useless extension candidates. Maximal degree in co-relation 40934. Up to 4128 conditions per place. [2024-06-21 16:47:09,197 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 180 selfloop transitions, 48 changer transitions 0/236 dead transitions. [2024-06-21 16:47:09,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 236 transitions, 3164 flow [2024-06-21 16:47:09,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:47:09,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:47:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-21 16:47:09,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-21 16:47:09,199 INFO L175 Difference]: Start difference. First operand has 188 places, 201 transitions, 2564 flow. Second operand 10 states and 188 transitions. [2024-06-21 16:47:09,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 236 transitions, 3164 flow [2024-06-21 16:47:09,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 236 transitions, 2985 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-21 16:47:09,601 INFO L231 Difference]: Finished difference. Result has 190 places, 201 transitions, 2488 flow [2024-06-21 16:47:09,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2385, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2488, PETRI_PLACES=190, PETRI_TRANSITIONS=201} [2024-06-21 16:47:09,602 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-06-21 16:47:09,602 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 201 transitions, 2488 flow [2024-06-21 16:47:09,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:09,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:09,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:09,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 16:47:09,602 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:09,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:09,603 INFO L85 PathProgramCache]: Analyzing trace with hash -986234490, now seen corresponding path program 15 times [2024-06-21 16:47:09,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:09,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558463885] [2024-06-21 16:47:09,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:09,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:10,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:10,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558463885] [2024-06-21 16:47:10,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558463885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:10,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:10,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:47:10,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35319678] [2024-06-21 16:47:10,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:10,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:47:10,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:10,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:47:10,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:47:10,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:10,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 201 transitions, 2488 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:10,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:10,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:10,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:11,638 INFO L124 PetriNetUnfolderBase]: 2863/4611 cut-off events. [2024-06-21 16:47:11,638 INFO L125 PetriNetUnfolderBase]: For 418651/418654 co-relation queries the response was YES. [2024-06-21 16:47:11,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40767 conditions, 4611 events. 2863/4611 cut-off events. For 418651/418654 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 27099 event pairs, 653 based on Foata normal form. 12/4619 useless extension candidates. Maximal degree in co-relation 40685. Up to 2715 conditions per place. [2024-06-21 16:47:11,681 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 120 selfloop transitions, 113 changer transitions 0/241 dead transitions. [2024-06-21 16:47:11,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 241 transitions, 3214 flow [2024-06-21 16:47:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:47:11,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:47:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-21 16:47:11,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-21 16:47:11,682 INFO L175 Difference]: Start difference. First operand has 190 places, 201 transitions, 2488 flow. Second operand 10 states and 194 transitions. [2024-06-21 16:47:11,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 241 transitions, 3214 flow [2024-06-21 16:47:12,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 241 transitions, 3106 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 16:47:12,190 INFO L231 Difference]: Finished difference. Result has 191 places, 202 transitions, 2692 flow [2024-06-21 16:47:12,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2692, PETRI_PLACES=191, PETRI_TRANSITIONS=202} [2024-06-21 16:47:12,191 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 148 predicate places. [2024-06-21 16:47:12,191 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 202 transitions, 2692 flow [2024-06-21 16:47:12,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:12,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:12,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:12,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 16:47:12,191 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:12,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:12,192 INFO L85 PathProgramCache]: Analyzing trace with hash 642377472, now seen corresponding path program 2 times [2024-06-21 16:47:12,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:12,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440529151] [2024-06-21 16:47:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:12,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:12,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:12,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440529151] [2024-06-21 16:47:12,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440529151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:12,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:12,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:47:12,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145568427] [2024-06-21 16:47:12,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:12,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:47:12,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:12,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:47:12,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:47:12,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:47:12,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 202 transitions, 2692 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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) [2024-06-21 16:47:12,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:12,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:47:12,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:13,799 INFO L124 PetriNetUnfolderBase]: 2974/4728 cut-off events. [2024-06-21 16:47:13,799 INFO L125 PetriNetUnfolderBase]: For 420790/420793 co-relation queries the response was YES. [2024-06-21 16:47:13,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42138 conditions, 4728 events. 2974/4728 cut-off events. For 420790/420793 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 27528 event pairs, 760 based on Foata normal form. 2/4726 useless extension candidates. Maximal degree in co-relation 42055. Up to 4535 conditions per place. [2024-06-21 16:47:13,925 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 187 selfloop transitions, 28 changer transitions 0/219 dead transitions. [2024-06-21 16:47:13,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 219 transitions, 3356 flow [2024-06-21 16:47:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:47:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:47:13,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-21 16:47:13,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-21 16:47:13,927 INFO L175 Difference]: Start difference. First operand has 191 places, 202 transitions, 2692 flow. Second operand 7 states and 123 transitions. [2024-06-21 16:47:13,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 219 transitions, 3356 flow [2024-06-21 16:47:14,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 219 transitions, 3082 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 16:47:14,321 INFO L231 Difference]: Finished difference. Result has 190 places, 205 transitions, 2536 flow [2024-06-21 16:47:14,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2536, PETRI_PLACES=190, PETRI_TRANSITIONS=205} [2024-06-21 16:47:14,337 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-06-21 16:47:14,337 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 205 transitions, 2536 flow [2024-06-21 16:47:14,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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) [2024-06-21 16:47:14,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:14,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:14,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 16:47:14,337 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:14,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:14,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1505830234, now seen corresponding path program 3 times [2024-06-21 16:47:14,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:14,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670752212] [2024-06-21 16:47:14,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:14,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:15,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:15,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670752212] [2024-06-21 16:47:15,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670752212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:15,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:15,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:47:15,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043874412] [2024-06-21 16:47:15,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:15,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:47:15,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:15,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:47:15,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:47:15,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:47:15,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 205 transitions, 2536 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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) [2024-06-21 16:47:15,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:15,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:47:15,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:16,012 INFO L124 PetriNetUnfolderBase]: 2968/4720 cut-off events. [2024-06-21 16:47:16,012 INFO L125 PetriNetUnfolderBase]: For 419748/419751 co-relation queries the response was YES. [2024-06-21 16:47:16,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41378 conditions, 4720 events. 2968/4720 cut-off events. For 419748/419751 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 27501 event pairs, 754 based on Foata normal form. 2/4718 useless extension candidates. Maximal degree in co-relation 41294. Up to 4530 conditions per place. [2024-06-21 16:47:16,056 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 185 selfloop transitions, 29 changer transitions 0/218 dead transitions. [2024-06-21 16:47:16,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 218 transitions, 3030 flow [2024-06-21 16:47:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:47:16,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:47:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-21 16:47:16,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41156462585034015 [2024-06-21 16:47:16,057 INFO L175 Difference]: Start difference. First operand has 190 places, 205 transitions, 2536 flow. Second operand 7 states and 121 transitions. [2024-06-21 16:47:16,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 218 transitions, 3030 flow [2024-06-21 16:47:16,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 218 transitions, 2886 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-21 16:47:16,656 INFO L231 Difference]: Finished difference. Result has 192 places, 205 transitions, 2456 flow [2024-06-21 16:47:16,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2456, PETRI_PLACES=192, PETRI_TRANSITIONS=205} [2024-06-21 16:47:16,656 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 149 predicate places. [2024-06-21 16:47:16,656 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 205 transitions, 2456 flow [2024-06-21 16:47:16,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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) [2024-06-21 16:47:16,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:16,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:16,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 16:47:16,657 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:16,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1328347360, now seen corresponding path program 1 times [2024-06-21 16:47:16,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:16,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056454351] [2024-06-21 16:47:16,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:16,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:17,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:17,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056454351] [2024-06-21 16:47:17,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056454351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:17,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:17,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:47:17,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512769023] [2024-06-21 16:47:17,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:17,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:47:17,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:17,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:47:17,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:47:17,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:47:17,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 205 transitions, 2456 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2024-06-21 16:47:17,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:17,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:47:17,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:18,034 INFO L124 PetriNetUnfolderBase]: 2666/4398 cut-off events. [2024-06-21 16:47:18,034 INFO L125 PetriNetUnfolderBase]: For 376867/376867 co-relation queries the response was YES. [2024-06-21 16:47:18,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37683 conditions, 4398 events. 2666/4398 cut-off events. For 376867/376867 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 26734 event pairs, 630 based on Foata normal form. 1/4397 useless extension candidates. Maximal degree in co-relation 37598. Up to 4099 conditions per place. [2024-06-21 16:47:18,076 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 200 selfloop transitions, 14 changer transitions 0/224 dead transitions. [2024-06-21 16:47:18,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 224 transitions, 2968 flow [2024-06-21 16:47:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:47:18,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:47:18,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-21 16:47:18,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-06-21 16:47:18,077 INFO L175 Difference]: Start difference. First operand has 192 places, 205 transitions, 2456 flow. Second operand 7 states and 132 transitions. [2024-06-21 16:47:18,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 224 transitions, 2968 flow [2024-06-21 16:47:18,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 224 transitions, 2902 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 16:47:18,496 INFO L231 Difference]: Finished difference. Result has 193 places, 208 transitions, 2474 flow [2024-06-21 16:47:18,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2390, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2474, PETRI_PLACES=193, PETRI_TRANSITIONS=208} [2024-06-21 16:47:18,497 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2024-06-21 16:47:18,497 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 208 transitions, 2474 flow [2024-06-21 16:47:18,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2024-06-21 16:47:18,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:18,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:18,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 16:47:18,498 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:18,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash 608643160, now seen corresponding path program 2 times [2024-06-21 16:47:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:18,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709941193] [2024-06-21 16:47:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:19,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:19,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709941193] [2024-06-21 16:47:19,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709941193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:19,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:19,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:47:19,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683510015] [2024-06-21 16:47:19,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:19,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:47:19,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:19,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:47:19,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:47:19,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:47:19,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 208 transitions, 2474 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2024-06-21 16:47:19,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:19,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:47:19,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:19,835 INFO L124 PetriNetUnfolderBase]: 2671/4405 cut-off events. [2024-06-21 16:47:19,836 INFO L125 PetriNetUnfolderBase]: For 386608/386608 co-relation queries the response was YES. [2024-06-21 16:47:19,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38126 conditions, 4405 events. 2671/4405 cut-off events. For 386608/386608 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 26787 event pairs, 631 based on Foata normal form. 1/4404 useless extension candidates. Maximal degree in co-relation 38040. Up to 4090 conditions per place. [2024-06-21 16:47:19,878 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 192 selfloop transitions, 26 changer transitions 0/228 dead transitions. [2024-06-21 16:47:19,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 228 transitions, 3160 flow [2024-06-21 16:47:19,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:47:19,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:47:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-21 16:47:19,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-06-21 16:47:19,879 INFO L175 Difference]: Start difference. First operand has 193 places, 208 transitions, 2474 flow. Second operand 7 states and 134 transitions. [2024-06-21 16:47:19,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 228 transitions, 3160 flow [2024-06-21 16:47:20,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 228 transitions, 3098 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-21 16:47:20,327 INFO L231 Difference]: Finished difference. Result has 195 places, 214 transitions, 2576 flow [2024-06-21 16:47:20,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2412, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2576, PETRI_PLACES=195, PETRI_TRANSITIONS=214} [2024-06-21 16:47:20,328 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2024-06-21 16:47:20,328 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 214 transitions, 2576 flow [2024-06-21 16:47:20,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2024-06-21 16:47:20,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:20,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:20,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 16:47:20,329 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:20,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:20,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1328467516, now seen corresponding path program 1 times [2024-06-21 16:47:20,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:20,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581880972] [2024-06-21 16:47:20,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:20,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:20,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:20,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581880972] [2024-06-21 16:47:20,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581880972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:20,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:20,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:47:20,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47512546] [2024-06-21 16:47:20,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:20,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:47:20,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:20,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:47:20,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:47:21,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:21,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 214 transitions, 2576 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:47:21,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:21,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:21,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:21,735 INFO L124 PetriNetUnfolderBase]: 2779/4515 cut-off events. [2024-06-21 16:47:21,735 INFO L125 PetriNetUnfolderBase]: For 398450/398450 co-relation queries the response was YES. [2024-06-21 16:47:21,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39281 conditions, 4515 events. 2779/4515 cut-off events. For 398450/398450 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 26900 event pairs, 668 based on Foata normal form. 1/4514 useless extension candidates. Maximal degree in co-relation 39194. Up to 4300 conditions per place. [2024-06-21 16:47:21,779 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 206 selfloop transitions, 23 changer transitions 0/234 dead transitions. [2024-06-21 16:47:21,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 234 transitions, 3266 flow [2024-06-21 16:47:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:47:21,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:47:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-21 16:47:21,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-21 16:47:21,782 INFO L175 Difference]: Start difference. First operand has 195 places, 214 transitions, 2576 flow. Second operand 7 states and 128 transitions. [2024-06-21 16:47:21,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 234 transitions, 3266 flow [2024-06-21 16:47:22,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 234 transitions, 3204 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-21 16:47:22,278 INFO L231 Difference]: Finished difference. Result has 199 places, 220 transitions, 2652 flow [2024-06-21 16:47:22,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2652, PETRI_PLACES=199, PETRI_TRANSITIONS=220} [2024-06-21 16:47:22,280 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 156 predicate places. [2024-06-21 16:47:22,280 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 220 transitions, 2652 flow [2024-06-21 16:47:22,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:47:22,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:22,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:22,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 16:47:22,280 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:22,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:22,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1637283474, now seen corresponding path program 2 times [2024-06-21 16:47:22,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:22,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861170434] [2024-06-21 16:47:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:22,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:22,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:22,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861170434] [2024-06-21 16:47:22,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861170434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:22,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:22,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:47:22,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140813244] [2024-06-21 16:47:22,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:22,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:47:22,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:22,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:47:22,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:47:22,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:22,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 220 transitions, 2652 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:47:22,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:22,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:22,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:23,646 INFO L124 PetriNetUnfolderBase]: 2784/4522 cut-off events. [2024-06-21 16:47:23,646 INFO L125 PetriNetUnfolderBase]: For 410115/410115 co-relation queries the response was YES. [2024-06-21 16:47:23,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39818 conditions, 4522 events. 2784/4522 cut-off events. For 410115/410115 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 26932 event pairs, 666 based on Foata normal form. 1/4521 useless extension candidates. Maximal degree in co-relation 39729. Up to 4321 conditions per place. [2024-06-21 16:47:23,690 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 210 selfloop transitions, 19 changer transitions 0/234 dead transitions. [2024-06-21 16:47:23,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 234 transitions, 3302 flow [2024-06-21 16:47:23,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:47:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:47:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-21 16:47:23,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-21 16:47:23,691 INFO L175 Difference]: Start difference. First operand has 199 places, 220 transitions, 2652 flow. Second operand 7 states and 123 transitions. [2024-06-21 16:47:23,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 234 transitions, 3302 flow [2024-06-21 16:47:24,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 234 transitions, 3234 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-21 16:47:24,189 INFO L231 Difference]: Finished difference. Result has 203 places, 223 transitions, 2674 flow [2024-06-21 16:47:24,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2674, PETRI_PLACES=203, PETRI_TRANSITIONS=223} [2024-06-21 16:47:24,190 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 160 predicate places. [2024-06-21 16:47:24,190 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 223 transitions, 2674 flow [2024-06-21 16:47:24,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:47:24,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:24,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:24,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 16:47:24,191 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:24,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:24,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1505598850, now seen corresponding path program 3 times [2024-06-21 16:47:24,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:24,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980928388] [2024-06-21 16:47:24,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:24,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:24,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:24,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980928388] [2024-06-21 16:47:24,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980928388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:24,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:24,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:47:24,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238494373] [2024-06-21 16:47:24,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:24,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:47:24,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:24,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:47:24,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:47:24,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:47:24,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 223 transitions, 2674 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2024-06-21 16:47:24,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:24,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:47:24,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:25,579 INFO L124 PetriNetUnfolderBase]: 2688/4425 cut-off events. [2024-06-21 16:47:25,579 INFO L125 PetriNetUnfolderBase]: For 418777/418777 co-relation queries the response was YES. [2024-06-21 16:47:25,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39268 conditions, 4425 events. 2688/4425 cut-off events. For 418777/418777 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 26792 event pairs, 633 based on Foata normal form. 1/4424 useless extension candidates. Maximal degree in co-relation 39177. Up to 4134 conditions per place. [2024-06-21 16:47:25,622 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 206 selfloop transitions, 14 changer transitions 0/233 dead transitions. [2024-06-21 16:47:25,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 233 transitions, 3138 flow [2024-06-21 16:47:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:47:25,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:47:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-21 16:47:25,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 16:47:25,623 INFO L175 Difference]: Start difference. First operand has 203 places, 223 transitions, 2674 flow. Second operand 7 states and 126 transitions. [2024-06-21 16:47:25,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 233 transitions, 3138 flow [2024-06-21 16:47:26,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 233 transitions, 3040 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-21 16:47:26,119 INFO L231 Difference]: Finished difference. Result has 205 places, 223 transitions, 2610 flow [2024-06-21 16:47:26,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2610, PETRI_PLACES=205, PETRI_TRANSITIONS=223} [2024-06-21 16:47:26,119 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 162 predicate places. [2024-06-21 16:47:26,119 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 223 transitions, 2610 flow [2024-06-21 16:47:26,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2024-06-21 16:47:26,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:26,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:26,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 16:47:26,120 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:26,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1505836186, now seen corresponding path program 3 times [2024-06-21 16:47:26,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:26,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900466107] [2024-06-21 16:47:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:26,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:26,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900466107] [2024-06-21 16:47:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900466107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:26,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:26,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:47:26,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439829669] [2024-06-21 16:47:26,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:26,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:47:26,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:26,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:47:26,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:47:26,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:26,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 223 transitions, 2610 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:47:26,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:26,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:26,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:27,551 INFO L124 PetriNetUnfolderBase]: 2778/4514 cut-off events. [2024-06-21 16:47:27,551 INFO L125 PetriNetUnfolderBase]: For 427055/427055 co-relation queries the response was YES. [2024-06-21 16:47:27,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39919 conditions, 4514 events. 2778/4514 cut-off events. For 427055/427055 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 26907 event pairs, 666 based on Foata normal form. 1/4513 useless extension candidates. Maximal degree in co-relation 39827. Up to 4320 conditions per place. [2024-06-21 16:47:27,591 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 214 selfloop transitions, 14 changer transitions 0/233 dead transitions. [2024-06-21 16:47:27,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 233 transitions, 3090 flow [2024-06-21 16:47:27,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:47:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:47:27,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-21 16:47:27,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-21 16:47:27,592 INFO L175 Difference]: Start difference. First operand has 205 places, 223 transitions, 2610 flow. Second operand 7 states and 120 transitions. [2024-06-21 16:47:27,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 233 transitions, 3090 flow [2024-06-21 16:47:28,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 233 transitions, 3028 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 16:47:28,062 INFO L231 Difference]: Finished difference. Result has 206 places, 223 transitions, 2582 flow [2024-06-21 16:47:28,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2548, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2582, PETRI_PLACES=206, PETRI_TRANSITIONS=223} [2024-06-21 16:47:28,063 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 163 predicate places. [2024-06-21 16:47:28,063 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 223 transitions, 2582 flow [2024-06-21 16:47:28,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:47:28,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:28,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:28,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 16:47:28,064 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:28,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:28,065 INFO L85 PathProgramCache]: Analyzing trace with hash 427938863, now seen corresponding path program 1 times [2024-06-21 16:47:28,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:28,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473545059] [2024-06-21 16:47:28,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:28,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:29,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:29,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473545059] [2024-06-21 16:47:29,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473545059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:29,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:29,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:47:29,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632042834] [2024-06-21 16:47:29,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:29,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:47:29,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:29,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:47:29,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:47:29,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:29,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 223 transitions, 2582 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:29,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:29,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:29,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:30,418 INFO L124 PetriNetUnfolderBase]: 2937/4726 cut-off events. [2024-06-21 16:47:30,418 INFO L125 PetriNetUnfolderBase]: For 526046/526046 co-relation queries the response was YES. [2024-06-21 16:47:30,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43688 conditions, 4726 events. 2937/4726 cut-off events. For 526046/526046 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 27846 event pairs, 500 based on Foata normal form. 12/4736 useless extension candidates. Maximal degree in co-relation 43595. Up to 4336 conditions per place. [2024-06-21 16:47:30,469 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 239 selfloop transitions, 18 changer transitions 0/269 dead transitions. [2024-06-21 16:47:30,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 269 transitions, 3328 flow [2024-06-21 16:47:30,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:47:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:47:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-21 16:47:30,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-21 16:47:30,471 INFO L175 Difference]: Start difference. First operand has 206 places, 223 transitions, 2582 flow. Second operand 10 states and 188 transitions. [2024-06-21 16:47:30,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 269 transitions, 3328 flow [2024-06-21 16:47:31,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 269 transitions, 3290 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 16:47:31,050 INFO L231 Difference]: Finished difference. Result has 211 places, 226 transitions, 2691 flow [2024-06-21 16:47:31,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2691, PETRI_PLACES=211, PETRI_TRANSITIONS=226} [2024-06-21 16:47:31,051 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 168 predicate places. [2024-06-21 16:47:31,051 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 226 transitions, 2691 flow [2024-06-21 16:47:31,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:31,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:31,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:31,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 16:47:31,052 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:31,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:31,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1116905903, now seen corresponding path program 2 times [2024-06-21 16:47:31,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:31,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972695869] [2024-06-21 16:47:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:31,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:32,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:32,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972695869] [2024-06-21 16:47:32,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972695869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:32,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:32,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:47:32,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299247972] [2024-06-21 16:47:32,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:32,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:47:32,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:32,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:47:32,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:47:32,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:32,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 226 transitions, 2691 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:32,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:32,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:32,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:33,265 INFO L124 PetriNetUnfolderBase]: 2995/4824 cut-off events. [2024-06-21 16:47:33,265 INFO L125 PetriNetUnfolderBase]: For 546637/546637 co-relation queries the response was YES. [2024-06-21 16:47:33,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44977 conditions, 4824 events. 2995/4824 cut-off events. For 546637/546637 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 28764 event pairs, 686 based on Foata normal form. 12/4834 useless extension candidates. Maximal degree in co-relation 44882. Up to 4474 conditions per place. [2024-06-21 16:47:33,312 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 238 selfloop transitions, 20 changer transitions 0/270 dead transitions. [2024-06-21 16:47:33,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 270 transitions, 3427 flow [2024-06-21 16:47:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:47:33,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:47:33,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-21 16:47:33,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-21 16:47:33,313 INFO L175 Difference]: Start difference. First operand has 211 places, 226 transitions, 2691 flow. Second operand 10 states and 188 transitions. [2024-06-21 16:47:33,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 270 transitions, 3427 flow [2024-06-21 16:47:33,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 270 transitions, 3333 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-21 16:47:33,777 INFO L231 Difference]: Finished difference. Result has 215 places, 229 transitions, 2742 flow [2024-06-21 16:47:33,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2597, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2742, PETRI_PLACES=215, PETRI_TRANSITIONS=229} [2024-06-21 16:47:33,777 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 172 predicate places. [2024-06-21 16:47:33,778 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 229 transitions, 2742 flow [2024-06-21 16:47:33,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:33,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:33,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:33,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 16:47:33,778 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:33,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:33,779 INFO L85 PathProgramCache]: Analyzing trace with hash 657489035, now seen corresponding path program 3 times [2024-06-21 16:47:33,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:33,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714796724] [2024-06-21 16:47:33,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:33,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:34,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:34,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714796724] [2024-06-21 16:47:34,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714796724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:34,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:34,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:47:34,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847414420] [2024-06-21 16:47:34,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:34,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:47:34,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:34,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:47:34,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:47:35,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:35,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 229 transitions, 2742 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:35,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:35,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:35,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:36,151 INFO L124 PetriNetUnfolderBase]: 3036/4895 cut-off events. [2024-06-21 16:47:36,151 INFO L125 PetriNetUnfolderBase]: For 568623/568623 co-relation queries the response was YES. [2024-06-21 16:47:36,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45693 conditions, 4895 events. 3036/4895 cut-off events. For 568623/568623 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 29329 event pairs, 691 based on Foata normal form. 12/4905 useless extension candidates. Maximal degree in co-relation 45596. Up to 4504 conditions per place. [2024-06-21 16:47:36,206 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 239 selfloop transitions, 23 changer transitions 0/274 dead transitions. [2024-06-21 16:47:36,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 274 transitions, 3504 flow [2024-06-21 16:47:36,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:47:36,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:47:36,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-21 16:47:36,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-21 16:47:36,208 INFO L175 Difference]: Start difference. First operand has 215 places, 229 transitions, 2742 flow. Second operand 10 states and 190 transitions. [2024-06-21 16:47:36,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 274 transitions, 3504 flow [2024-06-21 16:47:36,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 274 transitions, 3417 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-21 16:47:36,598 INFO L231 Difference]: Finished difference. Result has 219 places, 232 transitions, 2823 flow [2024-06-21 16:47:36,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2655, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2823, PETRI_PLACES=219, PETRI_TRANSITIONS=232} [2024-06-21 16:47:36,599 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 176 predicate places. [2024-06-21 16:47:36,599 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 232 transitions, 2823 flow [2024-06-21 16:47:36,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:36,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:36,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:36,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 16:47:36,600 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:36,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1995709879, now seen corresponding path program 4 times [2024-06-21 16:47:36,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:36,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044287505] [2024-06-21 16:47:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:36,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:37,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:37,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044287505] [2024-06-21 16:47:37,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044287505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:37,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:37,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:47:37,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893731740] [2024-06-21 16:47:37,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:37,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:47:37,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:37,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:47:37,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:47:38,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:38,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 232 transitions, 2823 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:38,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:38,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:38,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:39,133 INFO L124 PetriNetUnfolderBase]: 3094/4993 cut-off events. [2024-06-21 16:47:39,133 INFO L125 PetriNetUnfolderBase]: For 586745/586745 co-relation queries the response was YES. [2024-06-21 16:47:39,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46682 conditions, 4993 events. 3094/4993 cut-off events. For 586745/586745 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 30054 event pairs, 721 based on Foata normal form. 12/5003 useless extension candidates. Maximal degree in co-relation 46583. Up to 4631 conditions per place. [2024-06-21 16:47:39,187 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 236 selfloop transitions, 25 changer transitions 0/273 dead transitions. [2024-06-21 16:47:39,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 273 transitions, 3563 flow [2024-06-21 16:47:39,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:47:39,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:47:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-21 16:47:39,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2024-06-21 16:47:39,188 INFO L175 Difference]: Start difference. First operand has 219 places, 232 transitions, 2823 flow. Second operand 10 states and 187 transitions. [2024-06-21 16:47:39,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 273 transitions, 3563 flow [2024-06-21 16:47:39,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 273 transitions, 3449 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-21 16:47:39,767 INFO L231 Difference]: Finished difference. Result has 223 places, 235 transitions, 2870 flow [2024-06-21 16:47:39,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2870, PETRI_PLACES=223, PETRI_TRANSITIONS=235} [2024-06-21 16:47:39,768 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-21 16:47:39,768 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 235 transitions, 2870 flow [2024-06-21 16:47:39,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:39,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:39,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:39,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 16:47:39,769 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:39,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:39,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1995825199, now seen corresponding path program 5 times [2024-06-21 16:47:39,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:39,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855133102] [2024-06-21 16:47:39,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:39,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:40,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:40,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855133102] [2024-06-21 16:47:40,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855133102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:40,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:40,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:47:40,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556443744] [2024-06-21 16:47:40,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:40,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:47:40,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:40,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:47:40,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:47:41,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:41,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 235 transitions, 2870 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:41,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:41,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:41,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:42,081 INFO L124 PetriNetUnfolderBase]: 3135/5064 cut-off events. [2024-06-21 16:47:42,081 INFO L125 PetriNetUnfolderBase]: For 604382/604382 co-relation queries the response was YES. [2024-06-21 16:47:42,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47381 conditions, 5064 events. 3135/5064 cut-off events. For 604382/604382 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 30624 event pairs, 721 based on Foata normal form. 12/5074 useless extension candidates. Maximal degree in co-relation 47280. Up to 4643 conditions per place. [2024-06-21 16:47:42,141 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 236 selfloop transitions, 30 changer transitions 0/278 dead transitions. [2024-06-21 16:47:42,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 278 transitions, 3646 flow [2024-06-21 16:47:42,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:47:42,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:47:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-21 16:47:42,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-21 16:47:42,142 INFO L175 Difference]: Start difference. First operand has 223 places, 235 transitions, 2870 flow. Second operand 10 states and 188 transitions. [2024-06-21 16:47:42,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 278 transitions, 3646 flow [2024-06-21 16:47:42,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 278 transitions, 3543 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-21 16:47:42,765 INFO L231 Difference]: Finished difference. Result has 227 places, 239 transitions, 2966 flow [2024-06-21 16:47:42,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2767, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2966, PETRI_PLACES=227, PETRI_TRANSITIONS=239} [2024-06-21 16:47:42,765 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 184 predicate places. [2024-06-21 16:47:42,765 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 239 transitions, 2966 flow [2024-06-21 16:47:42,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:42,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:42,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:42,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 16:47:42,766 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:42,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:42,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1692711099, now seen corresponding path program 1 times [2024-06-21 16:47:42,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:42,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554177639] [2024-06-21 16:47:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:42,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:43,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:43,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554177639] [2024-06-21 16:47:43,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554177639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:43,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:43,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:47:43,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702624622] [2024-06-21 16:47:43,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:43,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:47:43,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:43,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:47:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:47:43,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:43,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 239 transitions, 2966 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:47:43,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:43,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:43,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:44,365 INFO L124 PetriNetUnfolderBase]: 3161/5102 cut-off events. [2024-06-21 16:47:44,366 INFO L125 PetriNetUnfolderBase]: For 603038/603038 co-relation queries the response was YES. [2024-06-21 16:47:44,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47941 conditions, 5102 events. 3161/5102 cut-off events. For 603038/603038 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 30884 event pairs, 750 based on Foata normal form. 2/5102 useless extension candidates. Maximal degree in co-relation 47838. Up to 4824 conditions per place. [2024-06-21 16:47:44,419 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 235 selfloop transitions, 25 changer transitions 0/272 dead transitions. [2024-06-21 16:47:44,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 272 transitions, 3868 flow [2024-06-21 16:47:44,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:47:44,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:47:44,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-21 16:47:44,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-21 16:47:44,420 INFO L175 Difference]: Start difference. First operand has 227 places, 239 transitions, 2966 flow. Second operand 7 states and 135 transitions. [2024-06-21 16:47:44,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 272 transitions, 3868 flow [2024-06-21 16:47:45,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 272 transitions, 3732 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-21 16:47:45,090 INFO L231 Difference]: Finished difference. Result has 228 places, 250 transitions, 3080 flow [2024-06-21 16:47:45,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2830, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3080, PETRI_PLACES=228, PETRI_TRANSITIONS=250} [2024-06-21 16:47:45,091 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 185 predicate places. [2024-06-21 16:47:45,091 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 250 transitions, 3080 flow [2024-06-21 16:47:45,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:47:45,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:45,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:45,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 16:47:45,092 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:45,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:45,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1932038855, now seen corresponding path program 2 times [2024-06-21 16:47:45,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:45,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505814761] [2024-06-21 16:47:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:45,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:45,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505814761] [2024-06-21 16:47:45,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505814761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:45,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:45,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:47:45,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822303746] [2024-06-21 16:47:45,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:45,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:47:45,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:45,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:47:45,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:47:45,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:45,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 250 transitions, 3080 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:47:45,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:45,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:45,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:46,803 INFO L124 PetriNetUnfolderBase]: 3169/5118 cut-off events. [2024-06-21 16:47:46,804 INFO L125 PetriNetUnfolderBase]: For 614133/614133 co-relation queries the response was YES. [2024-06-21 16:47:46,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48415 conditions, 5118 events. 3169/5118 cut-off events. For 614133/614133 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 31032 event pairs, 750 based on Foata normal form. 2/5118 useless extension candidates. Maximal degree in co-relation 48310. Up to 4869 conditions per place. [2024-06-21 16:47:46,857 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 240 selfloop transitions, 19 changer transitions 0/271 dead transitions. [2024-06-21 16:47:46,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 271 transitions, 3741 flow [2024-06-21 16:47:46,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:47:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:47:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-21 16:47:46,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-06-21 16:47:46,858 INFO L175 Difference]: Start difference. First operand has 228 places, 250 transitions, 3080 flow. Second operand 7 states and 129 transitions. [2024-06-21 16:47:46,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 271 transitions, 3741 flow [2024-06-21 16:47:47,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 271 transitions, 3605 flow, removed 64 selfloop flow, removed 2 redundant places. [2024-06-21 16:47:47,520 INFO L231 Difference]: Finished difference. Result has 233 places, 254 transitions, 3081 flow [2024-06-21 16:47:47,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2978, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3081, PETRI_PLACES=233, PETRI_TRANSITIONS=254} [2024-06-21 16:47:47,521 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 190 predicate places. [2024-06-21 16:47:47,521 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 254 transitions, 3081 flow [2024-06-21 16:47:47,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:47:47,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:47,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:47,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 16:47:47,522 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:47,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:47,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1932030919, now seen corresponding path program 1 times [2024-06-21 16:47:47,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:47,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514937686] [2024-06-21 16:47:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:48,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:48,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514937686] [2024-06-21 16:47:48,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514937686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:48,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:48,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:47:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146016413] [2024-06-21 16:47:48,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:48,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:47:48,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:48,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:47:48,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:47:48,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:47:48,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 254 transitions, 3081 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:47:48,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:48,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:47:48,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:49,493 INFO L124 PetriNetUnfolderBase]: 3267/5220 cut-off events. [2024-06-21 16:47:49,493 INFO L125 PetriNetUnfolderBase]: For 626437/626437 co-relation queries the response was YES. [2024-06-21 16:47:49,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49087 conditions, 5220 events. 3267/5220 cut-off events. For 626437/626437 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 31175 event pairs, 779 based on Foata normal form. 2/5220 useless extension candidates. Maximal degree in co-relation 48980. Up to 4995 conditions per place. [2024-06-21 16:47:49,545 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 243 selfloop transitions, 37 changer transitions 0/284 dead transitions. [2024-06-21 16:47:49,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 284 transitions, 3991 flow [2024-06-21 16:47:49,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:47:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:47:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-21 16:47:49,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 16:47:49,546 INFO L175 Difference]: Start difference. First operand has 233 places, 254 transitions, 3081 flow. Second operand 8 states and 144 transitions. [2024-06-21 16:47:49,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 284 transitions, 3991 flow [2024-06-21 16:47:50,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 284 transitions, 3923 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-21 16:47:50,265 INFO L231 Difference]: Finished difference. Result has 238 places, 263 transitions, 3231 flow [2024-06-21 16:47:50,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3013, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3231, PETRI_PLACES=238, PETRI_TRANSITIONS=263} [2024-06-21 16:47:50,267 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 195 predicate places. [2024-06-21 16:47:50,267 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 263 transitions, 3231 flow [2024-06-21 16:47:50,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:47:50,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:50,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:50,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 16:47:50,268 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:50,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:50,268 INFO L85 PathProgramCache]: Analyzing trace with hash 434071719, now seen corresponding path program 6 times [2024-06-21 16:47:50,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:50,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877943799] [2024-06-21 16:47:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:50,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:51,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:51,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877943799] [2024-06-21 16:47:51,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877943799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:51,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:51,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:47:51,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56036289] [2024-06-21 16:47:51,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:51,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:47:51,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:51,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:47:51,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:47:51,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:51,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 263 transitions, 3231 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:51,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:51,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:51,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:52,553 INFO L124 PetriNetUnfolderBase]: 3242/5236 cut-off events. [2024-06-21 16:47:52,554 INFO L125 PetriNetUnfolderBase]: For 675107/675122 co-relation queries the response was YES. [2024-06-21 16:47:52,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50196 conditions, 5236 events. 3242/5236 cut-off events. For 675107/675122 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 31854 event pairs, 760 based on Foata normal form. 16/5244 useless extension candidates. Maximal degree in co-relation 50087. Up to 4786 conditions per place. [2024-06-21 16:47:52,608 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 244 selfloop transitions, 45 changer transitions 0/301 dead transitions. [2024-06-21 16:47:52,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 301 transitions, 4023 flow [2024-06-21 16:47:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:47:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:47:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-21 16:47:52,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-21 16:47:52,610 INFO L175 Difference]: Start difference. First operand has 238 places, 263 transitions, 3231 flow. Second operand 10 states and 189 transitions. [2024-06-21 16:47:52,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 301 transitions, 4023 flow [2024-06-21 16:47:53,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 301 transitions, 3961 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-21 16:47:53,512 INFO L231 Difference]: Finished difference. Result has 246 places, 266 transitions, 3374 flow [2024-06-21 16:47:53,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3169, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3374, PETRI_PLACES=246, PETRI_TRANSITIONS=266} [2024-06-21 16:47:53,513 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 203 predicate places. [2024-06-21 16:47:53,513 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 266 transitions, 3374 flow [2024-06-21 16:47:53,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:53,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:53,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:53,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 16:47:53,514 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:53,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:53,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1255784829, now seen corresponding path program 7 times [2024-06-21 16:47:53,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:53,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157242360] [2024-06-21 16:47:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:53,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:54,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:54,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157242360] [2024-06-21 16:47:54,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157242360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:54,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:54,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:47:54,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932340134] [2024-06-21 16:47:54,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:54,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:47:54,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:54,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:47:54,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:47:54,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:54,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 266 transitions, 3374 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:54,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:54,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:54,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:56,138 INFO L124 PetriNetUnfolderBase]: 3300/5334 cut-off events. [2024-06-21 16:47:56,138 INFO L125 PetriNetUnfolderBase]: For 703243/703258 co-relation queries the response was YES. [2024-06-21 16:47:56,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51518 conditions, 5334 events. 3300/5334 cut-off events. For 703243/703258 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 32621 event pairs, 755 based on Foata normal form. 16/5342 useless extension candidates. Maximal degree in co-relation 51405. Up to 4807 conditions per place. [2024-06-21 16:47:56,199 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 243 selfloop transitions, 51 changer transitions 0/306 dead transitions. [2024-06-21 16:47:56,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 306 transitions, 4204 flow [2024-06-21 16:47:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:47:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:47:56,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-21 16:47:56,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-21 16:47:56,201 INFO L175 Difference]: Start difference. First operand has 246 places, 266 transitions, 3374 flow. Second operand 10 states and 189 transitions. [2024-06-21 16:47:56,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 306 transitions, 4204 flow [2024-06-21 16:47:57,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 306 transitions, 4057 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-21 16:47:57,439 INFO L231 Difference]: Finished difference. Result has 250 places, 270 transitions, 3475 flow [2024-06-21 16:47:57,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3227, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3475, PETRI_PLACES=250, PETRI_TRANSITIONS=270} [2024-06-21 16:47:57,440 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 207 predicate places. [2024-06-21 16:47:57,440 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 270 transitions, 3475 flow [2024-06-21 16:47:57,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:57,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:47:57,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:47:57,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 16:47:57,441 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:47:57,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:47:57,441 INFO L85 PathProgramCache]: Analyzing trace with hash -744856867, now seen corresponding path program 8 times [2024-06-21 16:47:57,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:47:57,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063446890] [2024-06-21 16:47:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:47:57,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:47:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:47:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:47:58,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:47:58,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063446890] [2024-06-21 16:47:58,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063446890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:47:58,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:47:58,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:47:58,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286801624] [2024-06-21 16:47:58,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:47:58,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:47:58,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:47:58,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:47:58,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:47:58,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:47:58,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 270 transitions, 3475 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:47:58,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:47:58,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:47:58,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:47:59,813 INFO L124 PetriNetUnfolderBase]: 3280/5302 cut-off events. [2024-06-21 16:47:59,814 INFO L125 PetriNetUnfolderBase]: For 689468/689483 co-relation queries the response was YES. [2024-06-21 16:47:59,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50467 conditions, 5302 events. 3280/5302 cut-off events. For 689468/689483 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 32318 event pairs, 761 based on Foata normal form. 16/5310 useless extension candidates. Maximal degree in co-relation 50352. Up to 4852 conditions per place. [2024-06-21 16:47:59,874 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 247 selfloop transitions, 47 changer transitions 0/306 dead transitions. [2024-06-21 16:47:59,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 306 transitions, 4087 flow [2024-06-21 16:47:59,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:47:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:47:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-21 16:47:59,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-21 16:47:59,875 INFO L175 Difference]: Start difference. First operand has 250 places, 270 transitions, 3475 flow. Second operand 10 states and 186 transitions. [2024-06-21 16:47:59,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 306 transitions, 4087 flow [2024-06-21 16:48:01,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 306 transitions, 3899 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-21 16:48:01,134 INFO L231 Difference]: Finished difference. Result has 253 places, 271 transitions, 3302 flow [2024-06-21 16:48:01,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3181, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3302, PETRI_PLACES=253, PETRI_TRANSITIONS=271} [2024-06-21 16:48:01,134 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 210 predicate places. [2024-06-21 16:48:01,134 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 271 transitions, 3302 flow [2024-06-21 16:48:01,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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) [2024-06-21 16:48:01,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:01,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:01,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 16:48:01,135 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:01,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:01,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1778619813, now seen corresponding path program 3 times [2024-06-21 16:48:01,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:01,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101371015] [2024-06-21 16:48:01,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:01,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:01,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:01,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101371015] [2024-06-21 16:48:01,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101371015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:01,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:01,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:48:01,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322864108] [2024-06-21 16:48:01,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:01,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:48:01,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:01,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:48:01,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:48:01,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:48:01,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 271 transitions, 3302 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:48:01,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:01,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:48:01,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:02,806 INFO L124 PetriNetUnfolderBase]: 3298/5329 cut-off events. [2024-06-21 16:48:02,806 INFO L125 PetriNetUnfolderBase]: For 681466/681481 co-relation queries the response was YES. [2024-06-21 16:48:02,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50541 conditions, 5329 events. 3298/5329 cut-off events. For 681466/681481 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 32547 event pairs, 780 based on Foata normal form. 6/5327 useless extension candidates. Maximal degree in co-relation 50424. Up to 4988 conditions per place. [2024-06-21 16:48:02,870 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 242 selfloop transitions, 44 changer transitions 0/298 dead transitions. [2024-06-21 16:48:02,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 298 transitions, 4406 flow [2024-06-21 16:48:02,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:48:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:48:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-21 16:48:02,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-21 16:48:02,871 INFO L175 Difference]: Start difference. First operand has 253 places, 271 transitions, 3302 flow. Second operand 7 states and 135 transitions. [2024-06-21 16:48:02,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 298 transitions, 4406 flow [2024-06-21 16:48:04,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 298 transitions, 4103 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-21 16:48:04,007 INFO L231 Difference]: Finished difference. Result has 250 places, 277 transitions, 3244 flow [2024-06-21 16:48:04,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3244, PETRI_PLACES=250, PETRI_TRANSITIONS=277} [2024-06-21 16:48:04,007 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 207 predicate places. [2024-06-21 16:48:04,008 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 277 transitions, 3244 flow [2024-06-21 16:48:04,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:48:04,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:04,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:04,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 16:48:04,008 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:04,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:04,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1464456479, now seen corresponding path program 4 times [2024-06-21 16:48:04,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:04,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078552994] [2024-06-21 16:48:04,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:04,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:04,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:04,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078552994] [2024-06-21 16:48:04,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078552994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:04,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:04,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:48:04,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534426799] [2024-06-21 16:48:04,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:04,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:48:04,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:04,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:48:04,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:48:04,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:48:04,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 277 transitions, 3244 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:48:04,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:04,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:48:04,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:05,650 INFO L124 PetriNetUnfolderBase]: 3308/5345 cut-off events. [2024-06-21 16:48:05,650 INFO L125 PetriNetUnfolderBase]: For 692462/692477 co-relation queries the response was YES. [2024-06-21 16:48:05,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50314 conditions, 5345 events. 3308/5345 cut-off events. For 692462/692477 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 32642 event pairs, 780 based on Foata normal form. 6/5343 useless extension candidates. Maximal degree in co-relation 50199. Up to 4998 conditions per place. [2024-06-21 16:48:05,712 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 237 selfloop transitions, 48 changer transitions 0/297 dead transitions. [2024-06-21 16:48:05,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 297 transitions, 4124 flow [2024-06-21 16:48:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:48:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:48:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-21 16:48:05,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445578231292517 [2024-06-21 16:48:05,713 INFO L175 Difference]: Start difference. First operand has 250 places, 277 transitions, 3244 flow. Second operand 7 states and 131 transitions. [2024-06-21 16:48:05,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 297 transitions, 4124 flow [2024-06-21 16:48:06,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 297 transitions, 3951 flow, removed 67 selfloop flow, removed 3 redundant places. [2024-06-21 16:48:06,626 INFO L231 Difference]: Finished difference. Result has 254 places, 280 transitions, 3251 flow [2024-06-21 16:48:06,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3105, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3251, PETRI_PLACES=254, PETRI_TRANSITIONS=280} [2024-06-21 16:48:06,627 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2024-06-21 16:48:06,627 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 280 transitions, 3251 flow [2024-06-21 16:48:06,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:48:06,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:06,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:06,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 16:48:06,627 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:06,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:06,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1559589507, now seen corresponding path program 5 times [2024-06-21 16:48:06,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:06,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704095498] [2024-06-21 16:48:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:06,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:07,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:07,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704095498] [2024-06-21 16:48:07,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704095498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:07,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:07,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:48:07,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621817762] [2024-06-21 16:48:07,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:07,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:48:07,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:07,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:48:07,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:48:07,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:48:07,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 280 transitions, 3251 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:48:07,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:07,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:48:07,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:08,280 INFO L124 PetriNetUnfolderBase]: 3302/5337 cut-off events. [2024-06-21 16:48:08,281 INFO L125 PetriNetUnfolderBase]: For 701039/701054 co-relation queries the response was YES. [2024-06-21 16:48:08,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50219 conditions, 5337 events. 3302/5337 cut-off events. For 701039/701054 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 32571 event pairs, 776 based on Foata normal form. 6/5335 useless extension candidates. Maximal degree in co-relation 50102. Up to 5063 conditions per place. [2024-06-21 16:48:08,342 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 254 selfloop transitions, 27 changer transitions 0/293 dead transitions. [2024-06-21 16:48:08,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 293 transitions, 4023 flow [2024-06-21 16:48:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:48:08,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:48:08,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-21 16:48:08,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42517006802721086 [2024-06-21 16:48:08,344 INFO L175 Difference]: Start difference. First operand has 254 places, 280 transitions, 3251 flow. Second operand 7 states and 125 transitions. [2024-06-21 16:48:08,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 293 transitions, 4023 flow [2024-06-21 16:48:09,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 293 transitions, 3901 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-21 16:48:09,250 INFO L231 Difference]: Finished difference. Result has 257 places, 280 transitions, 3189 flow [2024-06-21 16:48:09,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3129, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3189, PETRI_PLACES=257, PETRI_TRANSITIONS=280} [2024-06-21 16:48:09,250 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 214 predicate places. [2024-06-21 16:48:09,250 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 280 transitions, 3189 flow [2024-06-21 16:48:09,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:48:09,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:09,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:09,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 16:48:09,251 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:09,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:09,251 INFO L85 PathProgramCache]: Analyzing trace with hash -576796069, now seen corresponding path program 6 times [2024-06-21 16:48:09,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:09,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879708264] [2024-06-21 16:48:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:09,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:09,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:09,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879708264] [2024-06-21 16:48:09,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879708264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:09,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:09,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:48:09,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314171411] [2024-06-21 16:48:09,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:09,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:48:09,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:09,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:48:09,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:48:09,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:48:09,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 280 transitions, 3189 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:48:09,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:09,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:48:09,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:10,950 INFO L124 PetriNetUnfolderBase]: 3289/5322 cut-off events. [2024-06-21 16:48:10,951 INFO L125 PetriNetUnfolderBase]: For 706983/706998 co-relation queries the response was YES. [2024-06-21 16:48:10,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49938 conditions, 5322 events. 3289/5322 cut-off events. For 706983/706998 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 32573 event pairs, 775 based on Foata normal form. 6/5320 useless extension candidates. Maximal degree in co-relation 49820. Up to 5066 conditions per place. [2024-06-21 16:48:11,012 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 260 selfloop transitions, 19 changer transitions 0/291 dead transitions. [2024-06-21 16:48:11,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 291 transitions, 3787 flow [2024-06-21 16:48:11,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:48:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:48:11,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-21 16:48:11,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-21 16:48:11,014 INFO L175 Difference]: Start difference. First operand has 257 places, 280 transitions, 3189 flow. Second operand 7 states and 122 transitions. [2024-06-21 16:48:11,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 291 transitions, 3787 flow [2024-06-21 16:48:11,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 291 transitions, 3685 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-21 16:48:11,839 INFO L231 Difference]: Finished difference. Result has 259 places, 280 transitions, 3131 flow [2024-06-21 16:48:11,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3131, PETRI_PLACES=259, PETRI_TRANSITIONS=280} [2024-06-21 16:48:11,840 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 216 predicate places. [2024-06-21 16:48:11,840 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 280 transitions, 3131 flow [2024-06-21 16:48:11,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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) [2024-06-21 16:48:11,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:11,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:11,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 16:48:11,841 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:11,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:11,841 INFO L85 PathProgramCache]: Analyzing trace with hash -563901123, now seen corresponding path program 2 times [2024-06-21 16:48:11,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:11,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896155034] [2024-06-21 16:48:11,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:11,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:12,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:12,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896155034] [2024-06-21 16:48:12,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896155034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:12,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:12,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:12,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505959629] [2024-06-21 16:48:12,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:12,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:12,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:12,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:12,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:12,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:48:12,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 280 transitions, 3131 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:48:12,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:12,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:48:12,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:13,963 INFO L124 PetriNetUnfolderBase]: 3405/5446 cut-off events. [2024-06-21 16:48:13,963 INFO L125 PetriNetUnfolderBase]: For 727682/727685 co-relation queries the response was YES. [2024-06-21 16:48:14,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51121 conditions, 5446 events. 3405/5446 cut-off events. For 727682/727685 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 32764 event pairs, 808 based on Foata normal form. 2/5444 useless extension candidates. Maximal degree in co-relation 51003. Up to 5207 conditions per place. [2024-06-21 16:48:14,021 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 253 selfloop transitions, 45 changer transitions 0/302 dead transitions. [2024-06-21 16:48:14,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 302 transitions, 4237 flow [2024-06-21 16:48:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:14,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:14,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-21 16:48:14,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-21 16:48:14,023 INFO L175 Difference]: Start difference. First operand has 259 places, 280 transitions, 3131 flow. Second operand 8 states and 138 transitions. [2024-06-21 16:48:14,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 302 transitions, 4237 flow [2024-06-21 16:48:14,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 302 transitions, 4157 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-21 16:48:14,979 INFO L231 Difference]: Finished difference. Result has 259 places, 286 transitions, 3267 flow [2024-06-21 16:48:14,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3267, PETRI_PLACES=259, PETRI_TRANSITIONS=286} [2024-06-21 16:48:14,980 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 216 predicate places. [2024-06-21 16:48:14,980 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 286 transitions, 3267 flow [2024-06-21 16:48:14,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:48:14,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:14,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:14,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 16:48:14,981 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:14,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:14,981 INFO L85 PathProgramCache]: Analyzing trace with hash -576788133, now seen corresponding path program 3 times [2024-06-21 16:48:14,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:14,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313025490] [2024-06-21 16:48:14,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:14,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:15,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:15,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:15,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313025490] [2024-06-21 16:48:15,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313025490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:15,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:15,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:15,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134361108] [2024-06-21 16:48:15,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:15,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:15,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:15,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:15,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:15,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:48:15,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 286 transitions, 3267 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:48:15,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:15,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:48:15,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:17,116 INFO L124 PetriNetUnfolderBase]: 3399/5442 cut-off events. [2024-06-21 16:48:17,117 INFO L125 PetriNetUnfolderBase]: For 737314/737317 co-relation queries the response was YES. [2024-06-21 16:48:17,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51162 conditions, 5442 events. 3399/5442 cut-off events. For 737314/737317 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 32815 event pairs, 810 based on Foata normal form. 2/5440 useless extension candidates. Maximal degree in co-relation 51043. Up to 5202 conditions per place. [2024-06-21 16:48:17,181 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 255 selfloop transitions, 43 changer transitions 0/302 dead transitions. [2024-06-21 16:48:17,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 302 transitions, 4113 flow [2024-06-21 16:48:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-21 16:48:17,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-21 16:48:17,182 INFO L175 Difference]: Start difference. First operand has 259 places, 286 transitions, 3267 flow. Second operand 8 states and 138 transitions. [2024-06-21 16:48:17,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 302 transitions, 4113 flow [2024-06-21 16:48:18,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 302 transitions, 3959 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-21 16:48:18,106 INFO L231 Difference]: Finished difference. Result has 263 places, 286 transitions, 3205 flow [2024-06-21 16:48:18,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3113, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3205, PETRI_PLACES=263, PETRI_TRANSITIONS=286} [2024-06-21 16:48:18,107 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 220 predicate places. [2024-06-21 16:48:18,107 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 286 transitions, 3205 flow [2024-06-21 16:48:18,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:48:18,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:18,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:18,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 16:48:18,115 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:18,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:18,116 INFO L85 PathProgramCache]: Analyzing trace with hash -563455653, now seen corresponding path program 4 times [2024-06-21 16:48:18,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:18,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284174685] [2024-06-21 16:48:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:18,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:18,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:18,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284174685] [2024-06-21 16:48:18,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284174685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:18,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:18,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:18,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453124049] [2024-06-21 16:48:18,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:18,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:18,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:18,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:18,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:18,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:48:18,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 286 transitions, 3205 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:48:18,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:18,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:48:18,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:20,076 INFO L124 PetriNetUnfolderBase]: 3393/5432 cut-off events. [2024-06-21 16:48:20,077 INFO L125 PetriNetUnfolderBase]: For 745669/745672 co-relation queries the response was YES. [2024-06-21 16:48:20,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51033 conditions, 5432 events. 3393/5432 cut-off events. For 745669/745672 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 32706 event pairs, 807 based on Foata normal form. 2/5430 useless extension candidates. Maximal degree in co-relation 50913. Up to 5197 conditions per place. [2024-06-21 16:48:20,141 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 249 selfloop transitions, 47 changer transitions 0/300 dead transitions. [2024-06-21 16:48:20,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 300 transitions, 3871 flow [2024-06-21 16:48:20,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-21 16:48:20,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-21 16:48:20,142 INFO L175 Difference]: Start difference. First operand has 263 places, 286 transitions, 3205 flow. Second operand 8 states and 135 transitions. [2024-06-21 16:48:20,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 300 transitions, 3871 flow [2024-06-21 16:48:21,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 300 transitions, 3711 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-21 16:48:21,338 INFO L231 Difference]: Finished difference. Result has 264 places, 286 transitions, 3145 flow [2024-06-21 16:48:21,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3045, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3145, PETRI_PLACES=264, PETRI_TRANSITIONS=286} [2024-06-21 16:48:21,338 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 221 predicate places. [2024-06-21 16:48:21,338 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 286 transitions, 3145 flow [2024-06-21 16:48:21,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:48:21,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:21,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:21,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 16:48:21,339 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:21,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:21,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1770993317, now seen corresponding path program 1 times [2024-06-21 16:48:21,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:21,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427116922] [2024-06-21 16:48:21,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:21,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:22,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:22,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:22,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427116922] [2024-06-21 16:48:22,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427116922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:22,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:22,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:22,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952213040] [2024-06-21 16:48:22,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:22,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:22,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:22,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:22,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:22,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:48:22,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 286 transitions, 3145 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-21 16:48:22,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:22,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:48:22,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:23,193 INFO L124 PetriNetUnfolderBase]: 3175/5211 cut-off events. [2024-06-21 16:48:23,193 INFO L125 PetriNetUnfolderBase]: For 665420/665420 co-relation queries the response was YES. [2024-06-21 16:48:23,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47192 conditions, 5211 events. 3175/5211 cut-off events. For 665420/665420 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 32553 event pairs, 705 based on Foata normal form. 1/5199 useless extension candidates. Maximal degree in co-relation 47072. Up to 4883 conditions per place. [2024-06-21 16:48:23,253 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 273 selfloop transitions, 23 changer transitions 0/314 dead transitions. [2024-06-21 16:48:23,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 314 transitions, 4089 flow [2024-06-21 16:48:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:48:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:48:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-21 16:48:23,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-06-21 16:48:23,254 INFO L175 Difference]: Start difference. First operand has 264 places, 286 transitions, 3145 flow. Second operand 9 states and 166 transitions. [2024-06-21 16:48:23,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 314 transitions, 4089 flow [2024-06-21 16:48:24,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 314 transitions, 4003 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 16:48:24,162 INFO L231 Difference]: Finished difference. Result has 267 places, 292 transitions, 3253 flow [2024-06-21 16:48:24,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3059, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3253, PETRI_PLACES=267, PETRI_TRANSITIONS=292} [2024-06-21 16:48:24,163 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 224 predicate places. [2024-06-21 16:48:24,163 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 292 transitions, 3253 flow [2024-06-21 16:48:24,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-21 16:48:24,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:24,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:24,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 16:48:24,164 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:24,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:24,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1770902952, now seen corresponding path program 1 times [2024-06-21 16:48:24,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:24,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321487810] [2024-06-21 16:48:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:24,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:24,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:24,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321487810] [2024-06-21 16:48:24,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321487810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:24,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:24,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:24,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127184983] [2024-06-21 16:48:24,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:24,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:24,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:24,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:24,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:24,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:48:24,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 292 transitions, 3253 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:24,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:24,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:48:24,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:25,901 INFO L124 PetriNetUnfolderBase]: 3276/5316 cut-off events. [2024-06-21 16:48:25,902 INFO L125 PetriNetUnfolderBase]: For 683475/683475 co-relation queries the response was YES. [2024-06-21 16:48:25,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48500 conditions, 5316 events. 3276/5316 cut-off events. For 683475/683475 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 32689 event pairs, 732 based on Foata normal form. 1/5308 useless extension candidates. Maximal degree in co-relation 48379. Up to 5093 conditions per place. [2024-06-21 16:48:25,967 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 285 selfloop transitions, 17 changer transitions 0/312 dead transitions. [2024-06-21 16:48:25,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 312 transitions, 3955 flow [2024-06-21 16:48:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:25,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-21 16:48:25,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-21 16:48:25,969 INFO L175 Difference]: Start difference. First operand has 267 places, 292 transitions, 3253 flow. Second operand 8 states and 139 transitions. [2024-06-21 16:48:25,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 312 transitions, 3955 flow [2024-06-21 16:48:27,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 312 transitions, 3861 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-21 16:48:27,034 INFO L231 Difference]: Finished difference. Result has 270 places, 295 transitions, 3261 flow [2024-06-21 16:48:27,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3159, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3261, PETRI_PLACES=270, PETRI_TRANSITIONS=295} [2024-06-21 16:48:27,035 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 227 predicate places. [2024-06-21 16:48:27,035 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 295 transitions, 3261 flow [2024-06-21 16:48:27,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:27,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:27,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:27,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 16:48:27,036 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:27,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1770903107, now seen corresponding path program 2 times [2024-06-21 16:48:27,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:27,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692359147] [2024-06-21 16:48:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:27,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:27,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:27,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692359147] [2024-06-21 16:48:27,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692359147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:27,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:27,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:27,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928007442] [2024-06-21 16:48:27,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:27,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:27,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:27,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:27,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:27,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:48:27,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 295 transitions, 3261 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-21 16:48:27,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:27,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:48:27,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:28,950 INFO L124 PetriNetUnfolderBase]: 3189/5226 cut-off events. [2024-06-21 16:48:28,950 INFO L125 PetriNetUnfolderBase]: For 694364/694364 co-relation queries the response was YES. [2024-06-21 16:48:28,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48229 conditions, 5226 events. 3189/5226 cut-off events. For 694364/694364 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 32555 event pairs, 704 based on Foata normal form. 1/5216 useless extension candidates. Maximal degree in co-relation 48106. Up to 4907 conditions per place. [2024-06-21 16:48:29,013 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 276 selfloop transitions, 17 changer transitions 0/312 dead transitions. [2024-06-21 16:48:29,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 312 transitions, 3889 flow [2024-06-21 16:48:29,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:29,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-21 16:48:29,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-21 16:48:29,014 INFO L175 Difference]: Start difference. First operand has 270 places, 295 transitions, 3261 flow. Second operand 8 states and 146 transitions. [2024-06-21 16:48:29,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 312 transitions, 3889 flow [2024-06-21 16:48:30,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 312 transitions, 3767 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-21 16:48:30,203 INFO L231 Difference]: Finished difference. Result has 272 places, 295 transitions, 3179 flow [2024-06-21 16:48:30,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3139, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3179, PETRI_PLACES=272, PETRI_TRANSITIONS=295} [2024-06-21 16:48:30,203 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 229 predicate places. [2024-06-21 16:48:30,203 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 295 transitions, 3179 flow [2024-06-21 16:48:30,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-21 16:48:30,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:30,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:30,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 16:48:30,204 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:30,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1767183882, now seen corresponding path program 2 times [2024-06-21 16:48:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:30,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882442508] [2024-06-21 16:48:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:30,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:30,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:30,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882442508] [2024-06-21 16:48:30,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882442508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:30,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:30,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:30,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534065450] [2024-06-21 16:48:30,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:30,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:30,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:30,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:30,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:48:30,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 295 transitions, 3179 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:30,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:30,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:48:30,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:31,984 INFO L124 PetriNetUnfolderBase]: 3286/5330 cut-off events. [2024-06-21 16:48:31,984 INFO L125 PetriNetUnfolderBase]: For 710948/710948 co-relation queries the response was YES. [2024-06-21 16:48:32,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49116 conditions, 5330 events. 3286/5330 cut-off events. For 710948/710948 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 32825 event pairs, 734 based on Foata normal form. 1/5322 useless extension candidates. Maximal degree in co-relation 48992. Up to 5065 conditions per place. [2024-06-21 16:48:32,042 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 267 selfloop transitions, 43 changer transitions 0/320 dead transitions. [2024-06-21 16:48:32,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 320 transitions, 4359 flow [2024-06-21 16:48:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:32,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:32,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-21 16:48:32,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-21 16:48:32,044 INFO L175 Difference]: Start difference. First operand has 272 places, 295 transitions, 3179 flow. Second operand 8 states and 146 transitions. [2024-06-21 16:48:32,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 320 transitions, 4359 flow [2024-06-21 16:48:33,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 320 transitions, 4315 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 16:48:33,038 INFO L231 Difference]: Finished difference. Result has 273 places, 304 transitions, 3419 flow [2024-06-21 16:48:33,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3135, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3419, PETRI_PLACES=273, PETRI_TRANSITIONS=304} [2024-06-21 16:48:33,039 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 230 predicate places. [2024-06-21 16:48:33,039 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 304 transitions, 3419 flow [2024-06-21 16:48:33,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:33,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:33,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:33,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 16:48:33,040 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:33,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:33,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1754720839, now seen corresponding path program 3 times [2024-06-21 16:48:33,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:33,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423778449] [2024-06-21 16:48:33,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:33,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:33,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:33,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423778449] [2024-06-21 16:48:33,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423778449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:33,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:33,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:33,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023823188] [2024-06-21 16:48:33,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:33,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:33,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:33,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:33,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:33,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:48:33,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 304 transitions, 3419 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-21 16:48:33,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:33,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:48:33,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:34,669 INFO L124 PetriNetUnfolderBase]: 3207/5251 cut-off events. [2024-06-21 16:48:34,670 INFO L125 PetriNetUnfolderBase]: For 728696/728696 co-relation queries the response was YES. [2024-06-21 16:48:34,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49122 conditions, 5251 events. 3207/5251 cut-off events. For 728696/728696 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 32760 event pairs, 705 based on Foata normal form. 1/5241 useless extension candidates. Maximal degree in co-relation 48997. Up to 4912 conditions per place. [2024-06-21 16:48:34,734 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 270 selfloop transitions, 29 changer transitions 0/321 dead transitions. [2024-06-21 16:48:34,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 321 transitions, 4129 flow [2024-06-21 16:48:34,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-21 16:48:34,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 16:48:34,736 INFO L175 Difference]: Start difference. First operand has 273 places, 304 transitions, 3419 flow. Second operand 8 states and 147 transitions. [2024-06-21 16:48:34,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 321 transitions, 4129 flow [2024-06-21 16:48:35,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 321 transitions, 4039 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-21 16:48:35,895 INFO L231 Difference]: Finished difference. Result has 278 places, 307 transitions, 3477 flow [2024-06-21 16:48:35,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3329, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3477, PETRI_PLACES=278, PETRI_TRANSITIONS=307} [2024-06-21 16:48:35,896 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 235 predicate places. [2024-06-21 16:48:35,896 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 307 transitions, 3477 flow [2024-06-21 16:48:35,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-21 16:48:35,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:35,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:35,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 16:48:35,897 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:35,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:35,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1688076204, now seen corresponding path program 3 times [2024-06-21 16:48:35,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:35,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478386203] [2024-06-21 16:48:35,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:35,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:36,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:36,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478386203] [2024-06-21 16:48:36,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478386203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:36,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:36,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:36,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615046130] [2024-06-21 16:48:36,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:36,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:36,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:36,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:36,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:36,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:48:36,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 307 transitions, 3477 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:36,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:36,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:48:36,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:37,650 INFO L124 PetriNetUnfolderBase]: 3288/5333 cut-off events. [2024-06-21 16:48:37,650 INFO L125 PetriNetUnfolderBase]: For 741129/741129 co-relation queries the response was YES. [2024-06-21 16:48:37,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50170 conditions, 5333 events. 3288/5333 cut-off events. For 741129/741129 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 32840 event pairs, 734 based on Foata normal form. 1/5325 useless extension candidates. Maximal degree in co-relation 50043. Up to 5069 conditions per place. [2024-06-21 16:48:37,723 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 268 selfloop transitions, 44 changer transitions 0/322 dead transitions. [2024-06-21 16:48:37,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 322 transitions, 4309 flow [2024-06-21 16:48:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:37,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:37,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-21 16:48:37,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 16:48:37,724 INFO L175 Difference]: Start difference. First operand has 278 places, 307 transitions, 3477 flow. Second operand 8 states and 144 transitions. [2024-06-21 16:48:37,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 322 transitions, 4309 flow [2024-06-21 16:48:38,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 322 transitions, 4141 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-21 16:48:38,976 INFO L231 Difference]: Finished difference. Result has 280 places, 307 transitions, 3403 flow [2024-06-21 16:48:38,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3309, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3403, PETRI_PLACES=280, PETRI_TRANSITIONS=307} [2024-06-21 16:48:38,976 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-06-21 16:48:38,977 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 307 transitions, 3403 flow [2024-06-21 16:48:38,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:38,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:38,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:38,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 16:48:38,977 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:38,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:38,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1767178085, now seen corresponding path program 1 times [2024-06-21 16:48:38,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:38,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495104485] [2024-06-21 16:48:38,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:38,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:39,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:39,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495104485] [2024-06-21 16:48:39,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495104485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:39,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:39,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:39,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713165173] [2024-06-21 16:48:39,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:39,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:39,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:39,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:39,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:39,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:48:39,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 307 transitions, 3403 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:39,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:39,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:48:39,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:40,838 INFO L124 PetriNetUnfolderBase]: 3306/5360 cut-off events. [2024-06-21 16:48:40,838 INFO L125 PetriNetUnfolderBase]: For 763480/763480 co-relation queries the response was YES. [2024-06-21 16:48:40,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50587 conditions, 5360 events. 3306/5360 cut-off events. For 763480/763480 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 33006 event pairs, 734 based on Foata normal form. 2/5353 useless extension candidates. Maximal degree in co-relation 50459. Up to 5105 conditions per place. [2024-06-21 16:48:40,905 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 289 selfloop transitions, 34 changer transitions 0/333 dead transitions. [2024-06-21 16:48:40,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 333 transitions, 4393 flow [2024-06-21 16:48:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:40,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:40,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-21 16:48:40,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-21 16:48:40,907 INFO L175 Difference]: Start difference. First operand has 280 places, 307 transitions, 3403 flow. Second operand 8 states and 145 transitions. [2024-06-21 16:48:40,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 333 transitions, 4393 flow [2024-06-21 16:48:42,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 333 transitions, 4297 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 16:48:42,499 INFO L231 Difference]: Finished difference. Result has 282 places, 316 transitions, 3535 flow [2024-06-21 16:48:42,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3307, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3535, PETRI_PLACES=282, PETRI_TRANSITIONS=316} [2024-06-21 16:48:42,499 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 239 predicate places. [2024-06-21 16:48:42,499 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 316 transitions, 3535 flow [2024-06-21 16:48:42,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:42,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:42,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:42,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 16:48:42,500 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:42,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:42,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1559581416, now seen corresponding path program 4 times [2024-06-21 16:48:42,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:42,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964796674] [2024-06-21 16:48:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:42,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:43,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:43,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:43,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964796674] [2024-06-21 16:48:43,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964796674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:43,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:43,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:43,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245311036] [2024-06-21 16:48:43,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:43,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:43,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:43,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:43,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:43,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:48:43,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 316 transitions, 3535 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:43,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:43,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:48:43,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:44,272 INFO L124 PetriNetUnfolderBase]: 3311/5367 cut-off events. [2024-06-21 16:48:44,273 INFO L125 PetriNetUnfolderBase]: For 776386/776386 co-relation queries the response was YES. [2024-06-21 16:48:44,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51219 conditions, 5367 events. 3311/5367 cut-off events. For 776386/776386 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 33014 event pairs, 731 based on Foata normal form. 1/5359 useless extension candidates. Maximal degree in co-relation 51089. Up to 5139 conditions per place. [2024-06-21 16:48:44,333 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 294 selfloop transitions, 27 changer transitions 0/331 dead transitions. [2024-06-21 16:48:44,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 331 transitions, 4447 flow [2024-06-21 16:48:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:44,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-21 16:48:44,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-21 16:48:44,334 INFO L175 Difference]: Start difference. First operand has 282 places, 316 transitions, 3535 flow. Second operand 8 states and 137 transitions. [2024-06-21 16:48:44,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 331 transitions, 4447 flow [2024-06-21 16:48:45,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 331 transitions, 4367 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-21 16:48:45,968 INFO L231 Difference]: Finished difference. Result has 287 places, 319 transitions, 3581 flow [2024-06-21 16:48:45,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3455, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3581, PETRI_PLACES=287, PETRI_TRANSITIONS=319} [2024-06-21 16:48:45,969 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 244 predicate places. [2024-06-21 16:48:45,969 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 319 transitions, 3581 flow [2024-06-21 16:48:45,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:45,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:45,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:45,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 16:48:45,969 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:45,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash -571074213, now seen corresponding path program 4 times [2024-06-21 16:48:45,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:45,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608872839] [2024-06-21 16:48:45,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:45,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:46,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:46,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608872839] [2024-06-21 16:48:46,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608872839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:46,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:46,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:46,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693728227] [2024-06-21 16:48:46,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:46,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:46,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:46,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:46,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:46,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:48:46,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 319 transitions, 3581 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-21 16:48:46,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:46,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:48:46,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:47,761 INFO L124 PetriNetUnfolderBase]: 3223/5276 cut-off events. [2024-06-21 16:48:47,762 INFO L125 PetriNetUnfolderBase]: For 787685/787685 co-relation queries the response was YES. [2024-06-21 16:48:47,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50610 conditions, 5276 events. 3223/5276 cut-off events. For 787685/787685 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 32860 event pairs, 703 based on Foata normal form. 1/5266 useless extension candidates. Maximal degree in co-relation 50477. Up to 4961 conditions per place. [2024-06-21 16:48:47,830 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 293 selfloop transitions, 17 changer transitions 0/333 dead transitions. [2024-06-21 16:48:47,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 333 transitions, 4313 flow [2024-06-21 16:48:47,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:47,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:47,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-21 16:48:47,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 16:48:47,831 INFO L175 Difference]: Start difference. First operand has 287 places, 319 transitions, 3581 flow. Second operand 8 states and 140 transitions. [2024-06-21 16:48:47,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 333 transitions, 4313 flow [2024-06-21 16:48:49,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 333 transitions, 4189 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-21 16:48:49,399 INFO L231 Difference]: Finished difference. Result has 289 places, 322 transitions, 3589 flow [2024-06-21 16:48:49,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3457, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3589, PETRI_PLACES=289, PETRI_TRANSITIONS=322} [2024-06-21 16:48:49,400 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 246 predicate places. [2024-06-21 16:48:49,400 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 322 transitions, 3589 flow [2024-06-21 16:48:49,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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) [2024-06-21 16:48:49,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:49,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:49,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 16:48:49,401 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:49,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:49,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1555413314, now seen corresponding path program 5 times [2024-06-21 16:48:49,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:49,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506467762] [2024-06-21 16:48:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:49,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:49,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:49,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506467762] [2024-06-21 16:48:49,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506467762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:49,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:49,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:49,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284445950] [2024-06-21 16:48:49,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:49,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:49,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:49,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:49,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:50,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:48:50,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 322 transitions, 3589 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:50,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:50,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:48:50,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:51,053 INFO L124 PetriNetUnfolderBase]: 3313/5370 cut-off events. [2024-06-21 16:48:51,053 INFO L125 PetriNetUnfolderBase]: For 804655/804655 co-relation queries the response was YES. [2024-06-21 16:48:51,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51759 conditions, 5370 events. 3313/5370 cut-off events. For 804655/804655 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 33015 event pairs, 731 based on Foata normal form. 1/5362 useless extension candidates. Maximal degree in co-relation 51625. Up to 5141 conditions per place. [2024-06-21 16:48:51,127 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 298 selfloop transitions, 29 changer transitions 0/337 dead transitions. [2024-06-21 16:48:51,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 337 transitions, 4509 flow [2024-06-21 16:48:51,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:51,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-21 16:48:51,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-21 16:48:51,129 INFO L175 Difference]: Start difference. First operand has 289 places, 322 transitions, 3589 flow. Second operand 8 states and 138 transitions. [2024-06-21 16:48:51,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 337 transitions, 4509 flow [2024-06-21 16:48:52,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 337 transitions, 4399 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-21 16:48:52,810 INFO L231 Difference]: Finished difference. Result has 291 places, 325 transitions, 3601 flow [2024-06-21 16:48:52,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3479, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3601, PETRI_PLACES=291, PETRI_TRANSITIONS=325} [2024-06-21 16:48:52,811 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 248 predicate places. [2024-06-21 16:48:52,811 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 325 transitions, 3601 flow [2024-06-21 16:48:52,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:52,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:52,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:52,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 16:48:52,811 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:52,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:52,812 INFO L85 PathProgramCache]: Analyzing trace with hash -563716828, now seen corresponding path program 6 times [2024-06-21 16:48:52,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:52,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922029963] [2024-06-21 16:48:52,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:52,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:53,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:53,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922029963] [2024-06-21 16:48:53,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922029963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:53,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:53,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:53,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574848314] [2024-06-21 16:48:53,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:53,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:53,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:53,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:53,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:53,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:48:53,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 325 transitions, 3601 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:53,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:53,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:48:53,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:54,630 INFO L124 PetriNetUnfolderBase]: 3310/5366 cut-off events. [2024-06-21 16:48:54,630 INFO L125 PetriNetUnfolderBase]: For 815196/815196 co-relation queries the response was YES. [2024-06-21 16:48:54,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51755 conditions, 5366 events. 3310/5366 cut-off events. For 815196/815196 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 33028 event pairs, 731 based on Foata normal form. 1/5358 useless extension candidates. Maximal degree in co-relation 51620. Up to 5153 conditions per place. [2024-06-21 16:48:54,694 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 309 selfloop transitions, 17 changer transitions 0/336 dead transitions. [2024-06-21 16:48:54,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 336 transitions, 4279 flow [2024-06-21 16:48:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-21 16:48:54,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 16:48:54,696 INFO L175 Difference]: Start difference. First operand has 291 places, 325 transitions, 3601 flow. Second operand 8 states and 133 transitions. [2024-06-21 16:48:54,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 336 transitions, 4279 flow [2024-06-21 16:48:56,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 336 transitions, 4149 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-21 16:48:56,329 INFO L231 Difference]: Finished difference. Result has 294 places, 325 transitions, 3511 flow [2024-06-21 16:48:56,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3471, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3511, PETRI_PLACES=294, PETRI_TRANSITIONS=325} [2024-06-21 16:48:56,330 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 251 predicate places. [2024-06-21 16:48:56,330 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 325 transitions, 3511 flow [2024-06-21 16:48:56,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:56,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:56,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:56,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 16:48:56,331 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:56,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:56,331 INFO L85 PathProgramCache]: Analyzing trace with hash -571068261, now seen corresponding path program 2 times [2024-06-21 16:48:56,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:56,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264225408] [2024-06-21 16:48:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:56,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:48:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:48:57,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:48:57,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264225408] [2024-06-21 16:48:57,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264225408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:48:57,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:48:57,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:48:57,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593774476] [2024-06-21 16:48:57,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:48:57,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:48:57,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:48:57,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:48:57,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:48:57,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:48:57,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 325 transitions, 3511 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:57,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:48:57,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:48:57,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:48:58,133 INFO L124 PetriNetUnfolderBase]: 3334/5401 cut-off events. [2024-06-21 16:48:58,133 INFO L125 PetriNetUnfolderBase]: For 839491/839491 co-relation queries the response was YES. [2024-06-21 16:48:58,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52232 conditions, 5401 events. 3334/5401 cut-off events. For 839491/839491 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 33299 event pairs, 731 based on Foata normal form. 2/5394 useless extension candidates. Maximal degree in co-relation 52096. Up to 5159 conditions per place. [2024-06-21 16:48:58,206 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 304 selfloop transitions, 28 changer transitions 0/342 dead transitions. [2024-06-21 16:48:58,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 342 transitions, 4445 flow [2024-06-21 16:48:58,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:48:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:48:58,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-21 16:48:58,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 16:48:58,207 INFO L175 Difference]: Start difference. First operand has 294 places, 325 transitions, 3511 flow. Second operand 8 states and 140 transitions. [2024-06-21 16:48:58,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 342 transitions, 4445 flow [2024-06-21 16:48:59,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 342 transitions, 4387 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 16:48:59,835 INFO L231 Difference]: Finished difference. Result has 294 places, 328 transitions, 3565 flow [2024-06-21 16:48:59,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3453, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3565, PETRI_PLACES=294, PETRI_TRANSITIONS=328} [2024-06-21 16:48:59,835 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 251 predicate places. [2024-06-21 16:48:59,835 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 328 transitions, 3565 flow [2024-06-21 16:48:59,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:48:59,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:48:59,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:48:59,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 16:48:59,836 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:48:59,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:48:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash -563449701, now seen corresponding path program 3 times [2024-06-21 16:48:59,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:48:59,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945817416] [2024-06-21 16:48:59,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:48:59,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:48:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:00,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:00,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945817416] [2024-06-21 16:49:00,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945817416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:00,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:00,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:00,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551307045] [2024-06-21 16:49:00,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:00,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:00,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:00,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:00,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:00,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:49:00,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 328 transitions, 3565 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:00,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:00,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:49:00,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:49:01,653 INFO L124 PetriNetUnfolderBase]: 3330/5398 cut-off events. [2024-06-21 16:49:01,653 INFO L125 PetriNetUnfolderBase]: For 850789/850789 co-relation queries the response was YES. [2024-06-21 16:49:01,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52270 conditions, 5398 events. 3330/5398 cut-off events. For 850789/850789 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 33296 event pairs, 731 based on Foata normal form. 2/5391 useless extension candidates. Maximal degree in co-relation 52133. Up to 5176 conditions per place. [2024-06-21 16:49:01,724 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 314 selfloop transitions, 19 changer transitions 0/343 dead transitions. [2024-06-21 16:49:01,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 343 transitions, 4317 flow [2024-06-21 16:49:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:49:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:49:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-21 16:49:01,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-21 16:49:01,726 INFO L175 Difference]: Start difference. First operand has 294 places, 328 transitions, 3565 flow. Second operand 8 states and 134 transitions. [2024-06-21 16:49:01,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 343 transitions, 4317 flow [2024-06-21 16:49:03,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 343 transitions, 4207 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-21 16:49:03,336 INFO L231 Difference]: Finished difference. Result has 296 places, 331 transitions, 3562 flow [2024-06-21 16:49:03,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3463, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3562, PETRI_PLACES=296, PETRI_TRANSITIONS=331} [2024-06-21 16:49:03,336 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 253 predicate places. [2024-06-21 16:49:03,336 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 331 transitions, 3562 flow [2024-06-21 16:49:03,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:03,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:49:03,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:49:03,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 16:49:03,337 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:49:03,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:49:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1548061447, now seen corresponding path program 4 times [2024-06-21 16:49:03,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:49:03,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073020524] [2024-06-21 16:49:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:49:03,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:49:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:03,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:03,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073020524] [2024-06-21 16:49:03,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073020524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:03,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:03,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:03,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157216033] [2024-06-21 16:49:03,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:03,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:03,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:03,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:03,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:04,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:49:04,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 331 transitions, 3562 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:04,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:04,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:49:04,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:49:05,100 INFO L124 PetriNetUnfolderBase]: 3329/5395 cut-off events. [2024-06-21 16:49:05,100 INFO L125 PetriNetUnfolderBase]: For 856518/856518 co-relation queries the response was YES. [2024-06-21 16:49:05,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52146 conditions, 5395 events. 3329/5395 cut-off events. For 856518/856518 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 33212 event pairs, 730 based on Foata normal form. 2/5388 useless extension candidates. Maximal degree in co-relation 52009. Up to 5163 conditions per place. [2024-06-21 16:49:05,177 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 310 selfloop transitions, 24 changer transitions 0/344 dead transitions. [2024-06-21 16:49:05,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 344 transitions, 4264 flow [2024-06-21 16:49:05,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:49:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:49:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-21 16:49:05,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-21 16:49:05,179 INFO L175 Difference]: Start difference. First operand has 296 places, 331 transitions, 3562 flow. Second operand 8 states and 137 transitions. [2024-06-21 16:49:05,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 344 transitions, 4264 flow [2024-06-21 16:49:07,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 344 transitions, 4169 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-21 16:49:07,531 INFO L231 Difference]: Finished difference. Result has 298 places, 331 transitions, 3521 flow [2024-06-21 16:49:07,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3467, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3521, PETRI_PLACES=298, PETRI_TRANSITIONS=331} [2024-06-21 16:49:07,532 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 255 predicate places. [2024-06-21 16:49:07,532 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 331 transitions, 3521 flow [2024-06-21 16:49:07,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:07,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:49:07,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:49:07,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 16:49:07,533 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:49:07,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:49:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2137893755, now seen corresponding path program 1 times [2024-06-21 16:49:07,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:49:07,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688419798] [2024-06-21 16:49:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:49:07,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:49:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:08,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:08,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688419798] [2024-06-21 16:49:08,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688419798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:08,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:08,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:08,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185000327] [2024-06-21 16:49:08,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:08,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:08,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:08,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:49:08,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 331 transitions, 3521 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:08,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:08,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:49:08,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:49:09,742 INFO L124 PetriNetUnfolderBase]: 3392/5462 cut-off events. [2024-06-21 16:49:09,742 INFO L125 PetriNetUnfolderBase]: For 989252/989252 co-relation queries the response was YES. [2024-06-21 16:49:09,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55199 conditions, 5462 events. 3392/5462 cut-off events. For 989252/989252 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 33375 event pairs, 762 based on Foata normal form. 1/5457 useless extension candidates. Maximal degree in co-relation 55061. Up to 5163 conditions per place. [2024-06-21 16:49:09,811 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 314 selfloop transitions, 32 changer transitions 0/364 dead transitions. [2024-06-21 16:49:09,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 364 transitions, 4631 flow [2024-06-21 16:49:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:49:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:49:09,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-21 16:49:09,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-21 16:49:09,812 INFO L175 Difference]: Start difference. First operand has 298 places, 331 transitions, 3521 flow. Second operand 8 states and 153 transitions. [2024-06-21 16:49:09,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 364 transitions, 4631 flow [2024-06-21 16:49:11,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 364 transitions, 4552 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 16:49:11,945 INFO L231 Difference]: Finished difference. Result has 299 places, 337 transitions, 3678 flow [2024-06-21 16:49:11,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3442, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3678, PETRI_PLACES=299, PETRI_TRANSITIONS=337} [2024-06-21 16:49:11,946 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 256 predicate places. [2024-06-21 16:49:11,946 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 337 transitions, 3678 flow [2024-06-21 16:49:11,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:11,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:49:11,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:49:11,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 16:49:11,947 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:49:11,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:49:11,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1855123535, now seen corresponding path program 2 times [2024-06-21 16:49:11,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:49:11,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621300696] [2024-06-21 16:49:11,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:49:11,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:49:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:12,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:12,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621300696] [2024-06-21 16:49:12,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621300696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:12,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:12,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:12,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754543431] [2024-06-21 16:49:12,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:12,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:12,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:12,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:12,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:49:12,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 337 transitions, 3678 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:12,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:12,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:49:12,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:49:13,971 INFO L124 PetriNetUnfolderBase]: 3402/5478 cut-off events. [2024-06-21 16:49:13,971 INFO L125 PetriNetUnfolderBase]: For 1013072/1013072 co-relation queries the response was YES. [2024-06-21 16:49:14,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55915 conditions, 5478 events. 3402/5478 cut-off events. For 1013072/1013072 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 33490 event pairs, 762 based on Foata normal form. 1/5469 useless extension candidates. Maximal degree in co-relation 55776. Up to 5191 conditions per place. [2024-06-21 16:49:14,054 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 318 selfloop transitions, 30 changer transitions 0/366 dead transitions. [2024-06-21 16:49:14,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 366 transitions, 4552 flow [2024-06-21 16:49:14,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:49:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:49:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-21 16:49:14,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-21 16:49:14,055 INFO L175 Difference]: Start difference. First operand has 299 places, 337 transitions, 3678 flow. Second operand 8 states and 148 transitions. [2024-06-21 16:49:14,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 366 transitions, 4552 flow [2024-06-21 16:49:16,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 366 transitions, 4370 flow, removed 82 selfloop flow, removed 3 redundant places. [2024-06-21 16:49:16,103 INFO L231 Difference]: Finished difference. Result has 304 places, 343 transitions, 3688 flow [2024-06-21 16:49:16,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3538, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3688, PETRI_PLACES=304, PETRI_TRANSITIONS=343} [2024-06-21 16:49:16,104 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-21 16:49:16,104 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 343 transitions, 3688 flow [2024-06-21 16:49:16,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:16,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:49:16,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:49:16,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 16:49:16,105 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:49:16,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:49:16,105 INFO L85 PathProgramCache]: Analyzing trace with hash 815988357, now seen corresponding path program 1 times [2024-06-21 16:49:16,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:49:16,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87534813] [2024-06-21 16:49:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:49:16,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:49:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:17,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:17,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:17,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87534813] [2024-06-21 16:49:17,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87534813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:17,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:17,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:17,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021196709] [2024-06-21 16:49:17,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:17,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:17,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:17,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:17,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:17,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:49:17,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 343 transitions, 3688 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:17,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:17,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:49:17,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:49:18,522 INFO L124 PetriNetUnfolderBase]: 3410/5490 cut-off events. [2024-06-21 16:49:18,523 INFO L125 PetriNetUnfolderBase]: For 1035119/1035119 co-relation queries the response was YES. [2024-06-21 16:49:18,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56028 conditions, 5490 events. 3410/5490 cut-off events. For 1035119/1035119 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 33456 event pairs, 622 based on Foata normal form. 2/5482 useless extension candidates. Maximal degree in co-relation 55887. Up to 5155 conditions per place. [2024-06-21 16:49:18,604 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 326 selfloop transitions, 32 changer transitions 0/376 dead transitions. [2024-06-21 16:49:18,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 376 transitions, 4754 flow [2024-06-21 16:49:18,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:49:18,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:49:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-21 16:49:18,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-21 16:49:18,606 INFO L175 Difference]: Start difference. First operand has 304 places, 343 transitions, 3688 flow. Second operand 8 states and 153 transitions. [2024-06-21 16:49:18,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 376 transitions, 4754 flow [2024-06-21 16:49:20,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 376 transitions, 4664 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-21 16:49:20,831 INFO L231 Difference]: Finished difference. Result has 307 places, 347 transitions, 3755 flow [2024-06-21 16:49:20,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3598, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3755, PETRI_PLACES=307, PETRI_TRANSITIONS=347} [2024-06-21 16:49:20,832 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 264 predicate places. [2024-06-21 16:49:20,832 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 347 transitions, 3755 flow [2024-06-21 16:49:20,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:20,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:49:20,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:49:20,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 16:49:20,833 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:49:20,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:49:20,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2132182811, now seen corresponding path program 2 times [2024-06-21 16:49:20,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:49:20,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105616690] [2024-06-21 16:49:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:49:20,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:49:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:21,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:21,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105616690] [2024-06-21 16:49:21,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105616690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:21,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:21,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:21,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399874132] [2024-06-21 16:49:21,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:21,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:21,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:21,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:21,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:21,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:49:21,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 347 transitions, 3755 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:21,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:21,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:49:21,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:49:23,200 INFO L124 PetriNetUnfolderBase]: 3418/5502 cut-off events. [2024-06-21 16:49:23,200 INFO L125 PetriNetUnfolderBase]: For 1054958/1054958 co-relation queries the response was YES. [2024-06-21 16:49:23,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56456 conditions, 5502 events. 3418/5502 cut-off events. For 1054958/1054958 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 33673 event pairs, 760 based on Foata normal form. 2/5494 useless extension candidates. Maximal degree in co-relation 56314. Up to 5212 conditions per place. [2024-06-21 16:49:23,274 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 326 selfloop transitions, 29 changer transitions 0/373 dead transitions. [2024-06-21 16:49:23,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 373 transitions, 4571 flow [2024-06-21 16:49:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:49:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:49:23,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-21 16:49:23,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-21 16:49:23,276 INFO L175 Difference]: Start difference. First operand has 307 places, 347 transitions, 3755 flow. Second operand 8 states and 148 transitions. [2024-06-21 16:49:23,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 373 transitions, 4571 flow [2024-06-21 16:49:25,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 373 transitions, 4465 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-21 16:49:25,337 INFO L231 Difference]: Finished difference. Result has 311 places, 349 transitions, 3762 flow [2024-06-21 16:49:25,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3667, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3762, PETRI_PLACES=311, PETRI_TRANSITIONS=349} [2024-06-21 16:49:25,338 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 268 predicate places. [2024-06-21 16:49:25,338 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 349 transitions, 3762 flow [2024-06-21 16:49:25,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:25,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:49:25,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:49:25,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 16:49:25,339 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:49:25,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:49:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash 934792311, now seen corresponding path program 1 times [2024-06-21 16:49:25,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:49:25,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582291866] [2024-06-21 16:49:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:49:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:49:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:26,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:26,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582291866] [2024-06-21 16:49:26,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582291866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:26,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:26,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:26,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426361078] [2024-06-21 16:49:26,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:26,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:26,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:26,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:26,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:26,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:49:26,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 349 transitions, 3762 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:26,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:26,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:49:26,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:49:27,472 INFO L124 PetriNetUnfolderBase]: 3428/5516 cut-off events. [2024-06-21 16:49:27,473 INFO L125 PetriNetUnfolderBase]: For 1074569/1074569 co-relation queries the response was YES. [2024-06-21 16:49:27,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56736 conditions, 5516 events. 3428/5516 cut-off events. For 1074569/1074569 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 33750 event pairs, 758 based on Foata normal form. 2/5508 useless extension candidates. Maximal degree in co-relation 56592. Up to 5210 conditions per place. [2024-06-21 16:49:27,547 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 334 selfloop transitions, 24 changer transitions 0/376 dead transitions. [2024-06-21 16:49:27,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 376 transitions, 4640 flow [2024-06-21 16:49:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:49:27,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:49:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-21 16:49:27,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-21 16:49:27,549 INFO L175 Difference]: Start difference. First operand has 311 places, 349 transitions, 3762 flow. Second operand 8 states and 148 transitions. [2024-06-21 16:49:27,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 376 transitions, 4640 flow [2024-06-21 16:49:30,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 376 transitions, 4565 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 16:49:30,214 INFO L231 Difference]: Finished difference. Result has 313 places, 352 transitions, 3837 flow [2024-06-21 16:49:30,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3687, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3837, PETRI_PLACES=313, PETRI_TRANSITIONS=352} [2024-06-21 16:49:30,215 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 270 predicate places. [2024-06-21 16:49:30,215 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 352 transitions, 3837 flow [2024-06-21 16:49:30,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:30,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:49:30,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:49:30,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 16:49:30,215 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:49:30,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:49:30,216 INFO L85 PathProgramCache]: Analyzing trace with hash 934796961, now seen corresponding path program 2 times [2024-06-21 16:49:30,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:49:30,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736345073] [2024-06-21 16:49:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:49:30,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:49:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:30,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:30,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736345073] [2024-06-21 16:49:30,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736345073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:30,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:30,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:30,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370925488] [2024-06-21 16:49:30,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:30,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:30,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:30,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:30,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:31,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:49:31,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 352 transitions, 3837 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:31,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:31,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:49:31,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:49:32,218 INFO L124 PetriNetUnfolderBase]: 3454/5552 cut-off events. [2024-06-21 16:49:32,219 INFO L125 PetriNetUnfolderBase]: For 1108978/1108978 co-relation queries the response was YES. [2024-06-21 16:49:32,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57988 conditions, 5552 events. 3454/5552 cut-off events. For 1108978/1108978 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 33951 event pairs, 762 based on Foata normal form. 2/5548 useless extension candidates. Maximal degree in co-relation 57843. Up to 5194 conditions per place. [2024-06-21 16:49:32,422 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 322 selfloop transitions, 42 changer transitions 0/382 dead transitions. [2024-06-21 16:49:32,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 382 transitions, 5053 flow [2024-06-21 16:49:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:49:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:49:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-21 16:49:32,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-21 16:49:32,423 INFO L175 Difference]: Start difference. First operand has 313 places, 352 transitions, 3837 flow. Second operand 8 states and 151 transitions. [2024-06-21 16:49:32,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 382 transitions, 5053 flow [2024-06-21 16:49:34,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 382 transitions, 4929 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-21 16:49:34,839 INFO L231 Difference]: Finished difference. Result has 315 places, 358 transitions, 3997 flow [2024-06-21 16:49:34,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3713, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3997, PETRI_PLACES=315, PETRI_TRANSITIONS=358} [2024-06-21 16:49:34,840 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 272 predicate places. [2024-06-21 16:49:34,840 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 358 transitions, 3997 flow [2024-06-21 16:49:34,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:34,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:49:34,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:49:34,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 16:49:34,840 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:49:34,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:49:34,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1866787601, now seen corresponding path program 1 times [2024-06-21 16:49:34,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:49:34,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523607562] [2024-06-21 16:49:34,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:49:34,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:49:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:35,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:35,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:35,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523607562] [2024-06-21 16:49:35,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523607562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:35,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:35,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:35,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724409544] [2024-06-21 16:49:35,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:35,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:35,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:35,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:35,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:35,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:49:35,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 358 transitions, 3997 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:49:35,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:35,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:49:35,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:49:36,757 INFO L124 PetriNetUnfolderBase]: 3564/5676 cut-off events. [2024-06-21 16:49:36,757 INFO L125 PetriNetUnfolderBase]: For 1144523/1144523 co-relation queries the response was YES. [2024-06-21 16:49:36,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59682 conditions, 5676 events. 3564/5676 cut-off events. For 1144523/1144523 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 34330 event pairs, 788 based on Foata normal form. 2/5676 useless extension candidates. Maximal degree in co-relation 59536. Up to 5440 conditions per place. [2024-06-21 16:49:36,841 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 351 selfloop transitions, 40 changer transitions 0/395 dead transitions. [2024-06-21 16:49:36,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 395 transitions, 5298 flow [2024-06-21 16:49:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:49:36,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:49:36,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-21 16:49:36,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-21 16:49:36,843 INFO L175 Difference]: Start difference. First operand has 315 places, 358 transitions, 3997 flow. Second operand 8 states and 145 transitions. [2024-06-21 16:49:36,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 395 transitions, 5298 flow [2024-06-21 16:49:39,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 395 transitions, 5157 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-21 16:49:39,493 INFO L231 Difference]: Finished difference. Result has 320 places, 371 transitions, 4195 flow [2024-06-21 16:49:39,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3856, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4195, PETRI_PLACES=320, PETRI_TRANSITIONS=371} [2024-06-21 16:49:39,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2024-06-21 16:49:39,494 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 371 transitions, 4195 flow [2024-06-21 16:49:39,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:49:39,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:49:39,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:49:39,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 16:49:39,495 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:49:39,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:49:39,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1845172163, now seen corresponding path program 2 times [2024-06-21 16:49:39,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:49:39,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824952676] [2024-06-21 16:49:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:49:39,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:49:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:40,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:40,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824952676] [2024-06-21 16:49:40,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824952676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:40,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:40,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:40,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633985728] [2024-06-21 16:49:40,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:40,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:40,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:40,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:40,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:40,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:49:40,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 371 transitions, 4195 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:49:40,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:40,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:49:40,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:49:41,450 INFO L124 PetriNetUnfolderBase]: 3590/5714 cut-off events. [2024-06-21 16:49:41,451 INFO L125 PetriNetUnfolderBase]: For 1181738/1181738 co-relation queries the response was YES. [2024-06-21 16:49:41,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61026 conditions, 5714 events. 3590/5714 cut-off events. For 1181738/1181738 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 34552 event pairs, 790 based on Foata normal form. 2/5714 useless extension candidates. Maximal degree in co-relation 60877. Up to 5520 conditions per place. [2024-06-21 16:49:41,533 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 361 selfloop transitions, 33 changer transitions 0/398 dead transitions. [2024-06-21 16:49:41,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 398 transitions, 5454 flow [2024-06-21 16:49:41,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:49:41,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:49:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-21 16:49:41,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-21 16:49:41,535 INFO L175 Difference]: Start difference. First operand has 320 places, 371 transitions, 4195 flow. Second operand 8 states and 141 transitions. [2024-06-21 16:49:41,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 398 transitions, 5454 flow [2024-06-21 16:49:43,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 398 transitions, 5245 flow, removed 97 selfloop flow, removed 3 redundant places. [2024-06-21 16:49:43,626 INFO L231 Difference]: Finished difference. Result has 325 places, 378 transitions, 4255 flow [2024-06-21 16:49:43,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4064, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4255, PETRI_PLACES=325, PETRI_TRANSITIONS=378} [2024-06-21 16:49:43,626 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 282 predicate places. [2024-06-21 16:49:43,626 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 378 transitions, 4255 flow [2024-06-21 16:49:43,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:49:43,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:49:43,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:49:43,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 16:49:43,627 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:49:43,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:49:43,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1111569699, now seen corresponding path program 3 times [2024-06-21 16:49:43,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:49:43,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909950501] [2024-06-21 16:49:43,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:49:43,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:49:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:44,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:44,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909950501] [2024-06-21 16:49:44,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909950501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:44,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:44,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:44,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751557389] [2024-06-21 16:49:44,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:44,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:44,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:44,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:44,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:44,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:49:44,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 378 transitions, 4255 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:44,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:44,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:49:44,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:49:45,703 INFO L124 PetriNetUnfolderBase]: 3518/5646 cut-off events. [2024-06-21 16:49:45,703 INFO L125 PetriNetUnfolderBase]: For 1201545/1201545 co-relation queries the response was YES. [2024-06-21 16:49:45,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60441 conditions, 5646 events. 3518/5646 cut-off events. For 1201545/1201545 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 34563 event pairs, 765 based on Foata normal form. 2/5646 useless extension candidates. Maximal degree in co-relation 60290. Up to 5350 conditions per place. [2024-06-21 16:49:45,784 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 353 selfloop transitions, 22 changer transitions 0/400 dead transitions. [2024-06-21 16:49:45,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 400 transitions, 5155 flow [2024-06-21 16:49:45,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:49:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:49:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-21 16:49:45,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-21 16:49:45,785 INFO L175 Difference]: Start difference. First operand has 325 places, 378 transitions, 4255 flow. Second operand 8 states and 143 transitions. [2024-06-21 16:49:45,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 400 transitions, 5155 flow [2024-06-21 16:49:48,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 400 transitions, 5082 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-21 16:49:48,386 INFO L231 Difference]: Finished difference. Result has 330 places, 381 transitions, 4314 flow [2024-06-21 16:49:48,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4182, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4314, PETRI_PLACES=330, PETRI_TRANSITIONS=381} [2024-06-21 16:49:48,386 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 287 predicate places. [2024-06-21 16:49:48,386 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 381 transitions, 4314 flow [2024-06-21 16:49:48,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:48,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:49:48,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:49:48,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 16:49:48,387 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:49:48,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:49:48,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1845292505, now seen corresponding path program 3 times [2024-06-21 16:49:48,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:49:48,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118170011] [2024-06-21 16:49:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:49:48,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:49:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:49,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:49,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:49,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118170011] [2024-06-21 16:49:49,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118170011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:49,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:49,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:49,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343287276] [2024-06-21 16:49:49,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:49,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:49,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:49,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:49,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:49,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:49:49,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 381 transitions, 4314 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:49,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:49,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:49:49,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:49:50,621 INFO L124 PetriNetUnfolderBase]: 3524/5658 cut-off events. [2024-06-21 16:49:50,622 INFO L125 PetriNetUnfolderBase]: For 1216152/1216152 co-relation queries the response was YES. [2024-06-21 16:49:50,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60730 conditions, 5658 events. 3524/5658 cut-off events. For 1216152/1216152 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 34656 event pairs, 767 based on Foata normal form. 1/5657 useless extension candidates. Maximal degree in co-relation 60577. Up to 5345 conditions per place. [2024-06-21 16:49:50,694 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 347 selfloop transitions, 29 changer transitions 0/401 dead transitions. [2024-06-21 16:49:50,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 401 transitions, 5162 flow [2024-06-21 16:49:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:49:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:49:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-21 16:49:50,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-21 16:49:50,696 INFO L175 Difference]: Start difference. First operand has 330 places, 381 transitions, 4314 flow. Second operand 8 states and 143 transitions. [2024-06-21 16:49:50,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 401 transitions, 5162 flow [2024-06-21 16:49:53,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 401 transitions, 5058 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-21 16:49:53,476 INFO L231 Difference]: Finished difference. Result has 332 places, 384 transitions, 4334 flow [2024-06-21 16:49:53,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4210, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4334, PETRI_PLACES=332, PETRI_TRANSITIONS=384} [2024-06-21 16:49:53,477 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 289 predicate places. [2024-06-21 16:49:53,477 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 384 transitions, 4334 flow [2024-06-21 16:49:53,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:53,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:49:53,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:49:53,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 16:49:53,478 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:49:53,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:49:53,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1844935013, now seen corresponding path program 3 times [2024-06-21 16:49:53,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:49:53,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934107962] [2024-06-21 16:49:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:49:53,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:49:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:54,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:54,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934107962] [2024-06-21 16:49:54,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934107962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:54,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:54,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:54,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866374588] [2024-06-21 16:49:54,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:54,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:54,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:54,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:54,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:54,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:49:54,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 384 transitions, 4334 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:49:54,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:54,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:49:54,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:49:55,438 INFO L124 PetriNetUnfolderBase]: 3599/5727 cut-off events. [2024-06-21 16:49:55,439 INFO L125 PetriNetUnfolderBase]: For 1229009/1229009 co-relation queries the response was YES. [2024-06-21 16:49:55,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61131 conditions, 5727 events. 3599/5727 cut-off events. For 1229009/1229009 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 34659 event pairs, 793 based on Foata normal form. 2/5727 useless extension candidates. Maximal degree in co-relation 60977. Up to 5550 conditions per place. [2024-06-21 16:49:55,524 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 370 selfloop transitions, 28 changer transitions 0/402 dead transitions. [2024-06-21 16:49:55,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 402 transitions, 5188 flow [2024-06-21 16:49:55,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:49:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:49:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-21 16:49:55,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-21 16:49:55,525 INFO L175 Difference]: Start difference. First operand has 332 places, 384 transitions, 4334 flow. Second operand 8 states and 137 transitions. [2024-06-21 16:49:55,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 402 transitions, 5188 flow [2024-06-21 16:49:58,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 402 transitions, 5056 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-21 16:49:58,417 INFO L231 Difference]: Finished difference. Result has 334 places, 384 transitions, 4264 flow [2024-06-21 16:49:58,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4202, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4264, PETRI_PLACES=334, PETRI_TRANSITIONS=384} [2024-06-21 16:49:58,418 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 291 predicate places. [2024-06-21 16:49:58,418 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 384 transitions, 4264 flow [2024-06-21 16:49:58,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:49:58,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:49:58,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:49:58,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 16:49:58,419 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:49:58,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:49:58,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1845295481, now seen corresponding path program 3 times [2024-06-21 16:49:58,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:49:58,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280400076] [2024-06-21 16:49:58,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:49:58,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:49:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:49:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:49:59,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:49:59,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280400076] [2024-06-21 16:49:59,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280400076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:49:59,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:49:59,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:49:59,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924636777] [2024-06-21 16:49:59,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:49:59,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:49:59,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:49:59,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:49:59,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:49:59,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:49:59,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 384 transitions, 4264 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:49:59,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:49:59,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:49:59,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:50:00,648 INFO L124 PetriNetUnfolderBase]: 3527/5657 cut-off events. [2024-06-21 16:50:00,648 INFO L125 PetriNetUnfolderBase]: For 1251732/1251732 co-relation queries the response was YES. [2024-06-21 16:50:00,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60809 conditions, 5657 events. 3527/5657 cut-off events. For 1251732/1251732 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 34624 event pairs, 768 based on Foata normal form. 2/5657 useless extension candidates. Maximal degree in co-relation 60654. Up to 5347 conditions per place. [2024-06-21 16:50:00,730 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 351 selfloop transitions, 28 changer transitions 0/404 dead transitions. [2024-06-21 16:50:00,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 404 transitions, 5098 flow [2024-06-21 16:50:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:50:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:50:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-21 16:50:00,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-21 16:50:00,732 INFO L175 Difference]: Start difference. First operand has 334 places, 384 transitions, 4264 flow. Second operand 8 states and 143 transitions. [2024-06-21 16:50:00,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 404 transitions, 5098 flow [2024-06-21 16:50:03,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 404 transitions, 5028 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 16:50:03,757 INFO L231 Difference]: Finished difference. Result has 335 places, 386 transitions, 4291 flow [2024-06-21 16:50:03,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4194, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4291, PETRI_PLACES=335, PETRI_TRANSITIONS=386} [2024-06-21 16:50:03,758 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 292 predicate places. [2024-06-21 16:50:03,758 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 386 transitions, 4291 flow [2024-06-21 16:50:03,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:50:03,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:50:03,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:50:03,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 16:50:03,759 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:50:03,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:50:03,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1844926085, now seen corresponding path program 1 times [2024-06-21 16:50:03,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:50:03,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133384821] [2024-06-21 16:50:03,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:50:03,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:50:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:50:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:50:04,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:50:04,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133384821] [2024-06-21 16:50:04,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133384821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:50:04,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:50:04,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:50:04,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782801298] [2024-06-21 16:50:04,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:50:04,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:50:04,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:50:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:50:04,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:50:04,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:50:04,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 386 transitions, 4291 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:50:04,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:50:04,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:50:04,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:50:06,107 INFO L124 PetriNetUnfolderBase]: 3627/5771 cut-off events. [2024-06-21 16:50:06,107 INFO L125 PetriNetUnfolderBase]: For 1282828/1282828 co-relation queries the response was YES. [2024-06-21 16:50:06,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61811 conditions, 5771 events. 3627/5771 cut-off events. For 1282828/1282828 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 34963 event pairs, 802 based on Foata normal form. 4/5773 useless extension candidates. Maximal degree in co-relation 61655. Up to 5466 conditions per place. [2024-06-21 16:50:06,195 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 355 selfloop transitions, 57 changer transitions 0/416 dead transitions. [2024-06-21 16:50:06,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 416 transitions, 5575 flow [2024-06-21 16:50:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:50:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:50:06,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-21 16:50:06,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 16:50:06,196 INFO L175 Difference]: Start difference. First operand has 335 places, 386 transitions, 4291 flow. Second operand 9 states and 162 transitions. [2024-06-21 16:50:06,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 416 transitions, 5575 flow [2024-06-21 16:50:08,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 416 transitions, 5498 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 16:50:08,976 INFO L231 Difference]: Finished difference. Result has 338 places, 392 transitions, 4484 flow [2024-06-21 16:50:08,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4214, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4484, PETRI_PLACES=338, PETRI_TRANSITIONS=392} [2024-06-21 16:50:08,977 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 295 predicate places. [2024-06-21 16:50:08,977 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 392 transitions, 4484 flow [2024-06-21 16:50:08,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:50:08,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:50:08,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:50:08,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 16:50:08,978 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:50:08,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:50:08,978 INFO L85 PathProgramCache]: Analyzing trace with hash 925143487, now seen corresponding path program 4 times [2024-06-21 16:50:08,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:50:08,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358231082] [2024-06-21 16:50:08,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:50:08,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:50:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:50:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:50:09,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:50:09,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358231082] [2024-06-21 16:50:09,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358231082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:50:09,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:50:09,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:50:09,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489959609] [2024-06-21 16:50:09,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:50:09,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:50:09,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:50:09,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:50:09,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:50:09,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:50:09,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 392 transitions, 4484 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:50:09,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:50:09,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:50:09,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:50:11,195 INFO L124 PetriNetUnfolderBase]: 3590/5752 cut-off events. [2024-06-21 16:50:11,195 INFO L125 PetriNetUnfolderBase]: For 1326103/1326108 co-relation queries the response was YES. [2024-06-21 16:50:11,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63149 conditions, 5752 events. 3590/5752 cut-off events. For 1326103/1326108 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 35272 event pairs, 779 based on Foata normal form. 6/5755 useless extension candidates. Maximal degree in co-relation 62992. Up to 5304 conditions per place. [2024-06-21 16:50:11,278 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 345 selfloop transitions, 58 changer transitions 0/428 dead transitions. [2024-06-21 16:50:11,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 428 transitions, 6140 flow [2024-06-21 16:50:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:50:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:50:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-21 16:50:11,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-21 16:50:11,280 INFO L175 Difference]: Start difference. First operand has 338 places, 392 transitions, 4484 flow. Second operand 10 states and 182 transitions. [2024-06-21 16:50:11,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 428 transitions, 6140 flow [2024-06-21 16:50:14,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 428 transitions, 6033 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-21 16:50:14,785 INFO L231 Difference]: Finished difference. Result has 343 places, 401 transitions, 4818 flow [2024-06-21 16:50:14,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4377, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4818, PETRI_PLACES=343, PETRI_TRANSITIONS=401} [2024-06-21 16:50:14,785 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 300 predicate places. [2024-06-21 16:50:14,785 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 401 transitions, 4818 flow [2024-06-21 16:50:14,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:50:14,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:50:14,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:50:14,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 16:50:14,786 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:50:14,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:50:14,786 INFO L85 PathProgramCache]: Analyzing trace with hash 936571327, now seen corresponding path program 5 times [2024-06-21 16:50:14,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:50:14,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848183332] [2024-06-21 16:50:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:50:14,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:50:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:50:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:50:15,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:50:15,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848183332] [2024-06-21 16:50:15,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848183332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:50:15,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:50:15,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:50:15,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763510211] [2024-06-21 16:50:15,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:50:15,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:50:15,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:50:15,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:50:15,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:50:15,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:50:15,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 401 transitions, 4818 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:50:15,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:50:15,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:50:15,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:50:16,879 INFO L124 PetriNetUnfolderBase]: 3584/5744 cut-off events. [2024-06-21 16:50:16,880 INFO L125 PetriNetUnfolderBase]: For 1342053/1342058 co-relation queries the response was YES. [2024-06-21 16:50:16,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63479 conditions, 5744 events. 3584/5744 cut-off events. For 1342053/1342058 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 35213 event pairs, 778 based on Foata normal form. 6/5747 useless extension candidates. Maximal degree in co-relation 63320. Up to 5299 conditions per place. [2024-06-21 16:50:16,961 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 339 selfloop transitions, 57 changer transitions 0/421 dead transitions. [2024-06-21 16:50:16,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 421 transitions, 5904 flow [2024-06-21 16:50:16,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:50:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:50:16,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-21 16:50:16,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-21 16:50:16,963 INFO L175 Difference]: Start difference. First operand has 343 places, 401 transitions, 4818 flow. Second operand 8 states and 148 transitions. [2024-06-21 16:50:16,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 421 transitions, 5904 flow [2024-06-21 16:50:20,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 421 transitions, 5630 flow, removed 111 selfloop flow, removed 5 redundant places. [2024-06-21 16:50:20,807 INFO L231 Difference]: Finished difference. Result has 346 places, 401 transitions, 4664 flow [2024-06-21 16:50:20,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4544, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4664, PETRI_PLACES=346, PETRI_TRANSITIONS=401} [2024-06-21 16:50:20,807 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 303 predicate places. [2024-06-21 16:50:20,808 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 401 transitions, 4664 flow [2024-06-21 16:50:20,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:50:20,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:50:20,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:50:20,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 16:50:20,808 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:50:20,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:50:20,809 INFO L85 PathProgramCache]: Analyzing trace with hash 697242337, now seen corresponding path program 6 times [2024-06-21 16:50:20,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:50:20,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612835839] [2024-06-21 16:50:20,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:50:20,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:50:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:50:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:50:21,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:50:21,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612835839] [2024-06-21 16:50:21,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612835839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:50:21,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:50:21,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:50:21,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367126072] [2024-06-21 16:50:21,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:50:21,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:50:21,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:50:21,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:50:21,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:50:21,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:50:21,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 401 transitions, 4664 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:50:21,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:50:21,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:50:21,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:50:22,985 INFO L124 PetriNetUnfolderBase]: 3578/5736 cut-off events. [2024-06-21 16:50:22,986 INFO L125 PetriNetUnfolderBase]: For 1349167/1349172 co-relation queries the response was YES. [2024-06-21 16:50:23,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63185 conditions, 5736 events. 3578/5736 cut-off events. For 1349167/1349172 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 35188 event pairs, 778 based on Foata normal form. 6/5739 useless extension candidates. Maximal degree in co-relation 63024. Up to 5321 conditions per place. [2024-06-21 16:50:23,063 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 353 selfloop transitions, 44 changer transitions 0/422 dead transitions. [2024-06-21 16:50:23,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 422 transitions, 5524 flow [2024-06-21 16:50:23,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:50:23,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:50:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-21 16:50:23,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-21 16:50:23,064 INFO L175 Difference]: Start difference. First operand has 346 places, 401 transitions, 4664 flow. Second operand 8 states and 150 transitions. [2024-06-21 16:50:23,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 422 transitions, 5524 flow [2024-06-21 16:50:26,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 422 transitions, 5362 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-21 16:50:26,876 INFO L231 Difference]: Finished difference. Result has 347 places, 401 transitions, 4598 flow [2024-06-21 16:50:26,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4502, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4598, PETRI_PLACES=347, PETRI_TRANSITIONS=401} [2024-06-21 16:50:26,876 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 304 predicate places. [2024-06-21 16:50:26,876 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 401 transitions, 4598 flow [2024-06-21 16:50:26,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:50:26,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:50:26,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:50:26,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 16:50:26,877 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:50:26,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:50:26,877 INFO L85 PathProgramCache]: Analyzing trace with hash 436069779, now seen corresponding path program 4 times [2024-06-21 16:50:26,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:50:26,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634510667] [2024-06-21 16:50:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:50:26,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:50:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:50:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:50:27,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:50:27,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634510667] [2024-06-21 16:50:27,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634510667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:50:27,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:50:27,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:50:27,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638933837] [2024-06-21 16:50:27,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:50:27,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:50:27,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:50:27,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:50:27,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:50:27,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:50:27,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 401 transitions, 4598 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:50:27,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:50:27,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:50:27,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:50:28,988 INFO L124 PetriNetUnfolderBase]: 3675/5840 cut-off events. [2024-06-21 16:50:28,988 INFO L125 PetriNetUnfolderBase]: For 1376196/1376201 co-relation queries the response was YES. [2024-06-21 16:50:29,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64221 conditions, 5840 events. 3675/5840 cut-off events. For 1376196/1376201 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 35456 event pairs, 809 based on Foata normal form. 6/5843 useless extension candidates. Maximal degree in co-relation 64059. Up to 5497 conditions per place. [2024-06-21 16:50:29,069 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 352 selfloop transitions, 74 changer transitions 0/430 dead transitions. [2024-06-21 16:50:29,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 430 transitions, 6180 flow [2024-06-21 16:50:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:50:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:50:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-21 16:50:29,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-21 16:50:29,084 INFO L175 Difference]: Start difference. First operand has 347 places, 401 transitions, 4598 flow. Second operand 8 states and 146 transitions. [2024-06-21 16:50:29,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 430 transitions, 6180 flow [2024-06-21 16:50:33,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 430 transitions, 6058 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 16:50:33,237 INFO L231 Difference]: Finished difference. Result has 348 places, 407 transitions, 4812 flow [2024-06-21 16:50:33,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4476, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4812, PETRI_PLACES=348, PETRI_TRANSITIONS=407} [2024-06-21 16:50:33,238 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-06-21 16:50:33,238 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 407 transitions, 4812 flow [2024-06-21 16:50:33,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:50:33,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:50:33,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:50:33,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 16:50:33,239 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:50:33,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:50:33,239 INFO L85 PathProgramCache]: Analyzing trace with hash 436069593, now seen corresponding path program 7 times [2024-06-21 16:50:33,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:50:33,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940379035] [2024-06-21 16:50:33,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:50:33,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:50:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:50:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:50:33,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:50:33,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940379035] [2024-06-21 16:50:33,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940379035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:50:33,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:50:33,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:50:33,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476627004] [2024-06-21 16:50:33,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:50:33,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:50:33,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:50:33,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:50:33,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:50:34,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:50:34,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 407 transitions, 4812 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:50:34,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:50:34,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:50:34,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:50:35,324 INFO L124 PetriNetUnfolderBase]: 3611/5783 cut-off events. [2024-06-21 16:50:35,324 INFO L125 PetriNetUnfolderBase]: For 1414554/1414559 co-relation queries the response was YES. [2024-06-21 16:50:35,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64805 conditions, 5783 events. 3611/5783 cut-off events. For 1414554/1414559 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 35490 event pairs, 772 based on Foata normal form. 6/5786 useless extension candidates. Maximal degree in co-relation 64642. Up to 5221 conditions per place. [2024-06-21 16:50:35,411 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 318 selfloop transitions, 91 changer transitions 0/436 dead transitions. [2024-06-21 16:50:35,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 436 transitions, 6412 flow [2024-06-21 16:50:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:50:35,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:50:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-21 16:50:35,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-21 16:50:35,413 INFO L175 Difference]: Start difference. First operand has 348 places, 407 transitions, 4812 flow. Second operand 8 states and 153 transitions. [2024-06-21 16:50:35,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 436 transitions, 6412 flow [2024-06-21 16:50:39,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 436 transitions, 6217 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-21 16:50:39,044 INFO L231 Difference]: Finished difference. Result has 352 places, 413 transitions, 5035 flow [2024-06-21 16:50:39,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4617, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5035, PETRI_PLACES=352, PETRI_TRANSITIONS=413} [2024-06-21 16:50:39,044 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 309 predicate places. [2024-06-21 16:50:39,044 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 413 transitions, 5035 flow [2024-06-21 16:50:39,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:50:39,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:50:39,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:50:39,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 16:50:39,045 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:50:39,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:50:39,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1846481235, now seen corresponding path program 8 times [2024-06-21 16:50:39,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:50:39,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796830794] [2024-06-21 16:50:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:50:39,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:50:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:50:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:50:39,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:50:39,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796830794] [2024-06-21 16:50:39,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796830794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:50:39,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:50:39,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:50:39,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348600334] [2024-06-21 16:50:39,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:50:39,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:50:39,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:50:39,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:50:39,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:50:39,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:50:39,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 413 transitions, 5035 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:50:39,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:50:39,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:50:39,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:50:41,251 INFO L124 PetriNetUnfolderBase]: 3638/5826 cut-off events. [2024-06-21 16:50:41,251 INFO L125 PetriNetUnfolderBase]: For 1458198/1458203 co-relation queries the response was YES. [2024-06-21 16:50:41,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66258 conditions, 5826 events. 3638/5826 cut-off events. For 1458198/1458203 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 35763 event pairs, 776 based on Foata normal form. 6/5829 useless extension candidates. Maximal degree in co-relation 66093. Up to 5247 conditions per place. [2024-06-21 16:50:41,346 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 311 selfloop transitions, 101 changer transitions 0/439 dead transitions. [2024-06-21 16:50:41,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 439 transitions, 6649 flow [2024-06-21 16:50:41,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:50:41,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:50:41,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-21 16:50:41,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-21 16:50:41,347 INFO L175 Difference]: Start difference. First operand has 352 places, 413 transitions, 5035 flow. Second operand 8 states and 150 transitions. [2024-06-21 16:50:41,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 439 transitions, 6649 flow [2024-06-21 16:50:44,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 439 transitions, 6366 flow, removed 104 selfloop flow, removed 4 redundant places. [2024-06-21 16:50:44,591 INFO L231 Difference]: Finished difference. Result has 356 places, 419 transitions, 5196 flow [2024-06-21 16:50:44,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4820, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5196, PETRI_PLACES=356, PETRI_TRANSITIONS=419} [2024-06-21 16:50:44,591 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 313 predicate places. [2024-06-21 16:50:44,592 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 419 transitions, 5196 flow [2024-06-21 16:50:44,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:50:44,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:50:44,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:50:44,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 16:50:44,592 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:50:44,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:50:44,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1051625533, now seen corresponding path program 5 times [2024-06-21 16:50:44,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:50:44,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030970211] [2024-06-21 16:50:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:50:44,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:50:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:50:45,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:50:45,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:50:45,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030970211] [2024-06-21 16:50:45,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030970211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:50:45,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:50:45,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:50:45,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226569515] [2024-06-21 16:50:45,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:50:45,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:50:45,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:50:45,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:50:45,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:50:45,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:50:45,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 419 transitions, 5196 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:50:45,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:50:45,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:50:45,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:50:46,675 INFO L124 PetriNetUnfolderBase]: 3745/5949 cut-off events. [2024-06-21 16:50:46,675 INFO L125 PetriNetUnfolderBase]: For 1488560/1488565 co-relation queries the response was YES. [2024-06-21 16:50:46,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67428 conditions, 5949 events. 3745/5949 cut-off events. For 1488560/1488565 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 36145 event pairs, 806 based on Foata normal form. 6/5952 useless extension candidates. Maximal degree in co-relation 67261. Up to 5583 conditions per place. [2024-06-21 16:50:46,771 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 362 selfloop transitions, 79 changer transitions 0/445 dead transitions. [2024-06-21 16:50:46,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 445 transitions, 6740 flow [2024-06-21 16:50:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:50:46,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:50:46,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-21 16:50:46,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 16:50:46,773 INFO L175 Difference]: Start difference. First operand has 356 places, 419 transitions, 5196 flow. Second operand 8 states and 144 transitions. [2024-06-21 16:50:46,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 445 transitions, 6740 flow [2024-06-21 16:50:50,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 445 transitions, 6525 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-21 16:50:50,322 INFO L231 Difference]: Finished difference. Result has 360 places, 425 transitions, 5249 flow [2024-06-21 16:50:50,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4981, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5249, PETRI_PLACES=360, PETRI_TRANSITIONS=425} [2024-06-21 16:50:50,322 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 317 predicate places. [2024-06-21 16:50:50,322 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 425 transitions, 5249 flow [2024-06-21 16:50:50,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:50:50,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:50:50,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:50:50,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 16:50:50,323 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:50:50,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:50:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1052041243, now seen corresponding path program 6 times [2024-06-21 16:50:50,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:50:50,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303928135] [2024-06-21 16:50:50,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:50:50,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:50:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:50:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:50:51,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:50:51,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303928135] [2024-06-21 16:50:51,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303928135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:50:51,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:50:51,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:50:51,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814783816] [2024-06-21 16:50:51,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:50:51,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:50:51,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:50:51,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:50:51,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:50:51,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:50:51,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 425 transitions, 5249 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:50:51,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:50:51,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:50:51,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:50:52,487 INFO L124 PetriNetUnfolderBase]: 3739/5937 cut-off events. [2024-06-21 16:50:52,487 INFO L125 PetriNetUnfolderBase]: For 1498136/1498141 co-relation queries the response was YES. [2024-06-21 16:50:52,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67156 conditions, 5937 events. 3739/5937 cut-off events. For 1498136/1498141 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 36071 event pairs, 804 based on Foata normal form. 6/5940 useless extension candidates. Maximal degree in co-relation 66988. Up to 5578 conditions per place. [2024-06-21 16:50:52,581 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 359 selfloop transitions, 81 changer transitions 0/444 dead transitions. [2024-06-21 16:50:52,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 444 transitions, 6459 flow [2024-06-21 16:50:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:50:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:50:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-21 16:50:52,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-21 16:50:52,583 INFO L175 Difference]: Start difference. First operand has 360 places, 425 transitions, 5249 flow. Second operand 8 states and 142 transitions. [2024-06-21 16:50:52,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 444 transitions, 6459 flow [2024-06-21 16:50:56,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 444 transitions, 6281 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-21 16:50:56,434 INFO L231 Difference]: Finished difference. Result has 364 places, 425 transitions, 5239 flow [2024-06-21 16:50:56,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5071, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5239, PETRI_PLACES=364, PETRI_TRANSITIONS=425} [2024-06-21 16:50:56,438 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 321 predicate places. [2024-06-21 16:50:56,438 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 425 transitions, 5239 flow [2024-06-21 16:50:56,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:50:56,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:50:56,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:50:56,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 16:50:56,438 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:50:56,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:50:56,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1437984485, now seen corresponding path program 9 times [2024-06-21 16:50:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:50:56,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039008900] [2024-06-21 16:50:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:50:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:50:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:50:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:50:57,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:50:57,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039008900] [2024-06-21 16:50:57,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039008900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:50:57,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:50:57,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:50:57,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304524279] [2024-06-21 16:50:57,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:50:57,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:50:57,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:50:57,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:50:57,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:50:57,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:50:57,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 425 transitions, 5239 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:50:57,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:50:57,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:50:57,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:50:58,631 INFO L124 PetriNetUnfolderBase]: 3646/5846 cut-off events. [2024-06-21 16:50:58,631 INFO L125 PetriNetUnfolderBase]: For 1510079/1510084 co-relation queries the response was YES. [2024-06-21 16:50:58,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66429 conditions, 5846 events. 3646/5846 cut-off events. For 1510079/1510084 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 35983 event pairs, 777 based on Foata normal form. 6/5849 useless extension candidates. Maximal degree in co-relation 66260. Up to 5262 conditions per place. [2024-06-21 16:50:58,720 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 315 selfloop transitions, 100 changer transitions 0/444 dead transitions. [2024-06-21 16:50:58,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 444 transitions, 6401 flow [2024-06-21 16:50:58,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:50:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:50:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-21 16:50:58,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-06-21 16:50:58,722 INFO L175 Difference]: Start difference. First operand has 364 places, 425 transitions, 5239 flow. Second operand 8 states and 149 transitions. [2024-06-21 16:50:58,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 444 transitions, 6401 flow [2024-06-21 16:51:02,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 444 transitions, 6173 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-21 16:51:02,775 INFO L231 Difference]: Finished difference. Result has 365 places, 425 transitions, 5217 flow [2024-06-21 16:51:02,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5011, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5217, PETRI_PLACES=365, PETRI_TRANSITIONS=425} [2024-06-21 16:51:02,776 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 322 predicate places. [2024-06-21 16:51:02,776 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 425 transitions, 5217 flow [2024-06-21 16:51:02,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:51:02,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:51:02,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:51:02,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 16:51:02,776 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:51:02,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:51:02,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1102395649, now seen corresponding path program 10 times [2024-06-21 16:51:02,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:51:02,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627384530] [2024-06-21 16:51:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:51:02,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:51:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:51:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:51:03,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:51:03,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627384530] [2024-06-21 16:51:03,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627384530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:51:03,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:51:03,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:51:03,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902810228] [2024-06-21 16:51:03,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:51:03,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:51:03,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:51:03,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:51:03,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:51:03,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:51:03,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 425 transitions, 5217 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:51:03,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:51:03,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:51:03,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:51:04,921 INFO L124 PetriNetUnfolderBase]: 3656/5860 cut-off events. [2024-06-21 16:51:04,921 INFO L125 PetriNetUnfolderBase]: For 1533866/1533871 co-relation queries the response was YES. [2024-06-21 16:51:04,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66788 conditions, 5860 events. 3656/5860 cut-off events. For 1533866/1533871 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 36061 event pairs, 772 based on Foata normal form. 6/5863 useless extension candidates. Maximal degree in co-relation 66618. Up to 5493 conditions per place. [2024-06-21 16:51:05,015 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 373 selfloop transitions, 41 changer transitions 0/443 dead transitions. [2024-06-21 16:51:05,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 443 transitions, 6448 flow [2024-06-21 16:51:05,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:51:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:51:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-21 16:51:05,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-21 16:51:05,016 INFO L175 Difference]: Start difference. First operand has 365 places, 425 transitions, 5217 flow. Second operand 8 states and 141 transitions. [2024-06-21 16:51:05,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 443 transitions, 6448 flow [2024-06-21 16:51:09,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 443 transitions, 6230 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-21 16:51:09,134 INFO L231 Difference]: Finished difference. Result has 366 places, 428 transitions, 5180 flow [2024-06-21 16:51:09,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5005, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5180, PETRI_PLACES=366, PETRI_TRANSITIONS=428} [2024-06-21 16:51:09,135 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 323 predicate places. [2024-06-21 16:51:09,135 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 428 transitions, 5180 flow [2024-06-21 16:51:09,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:51:09,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:51:09,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:51:09,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 16:51:09,135 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:51:09,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:51:09,136 INFO L85 PathProgramCache]: Analyzing trace with hash -745277571, now seen corresponding path program 7 times [2024-06-21 16:51:09,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:51:09,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087011377] [2024-06-21 16:51:09,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:51:09,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:51:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:51:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:51:09,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:51:09,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087011377] [2024-06-21 16:51:09,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087011377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:51:09,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:51:09,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:51:09,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87688076] [2024-06-21 16:51:09,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:51:09,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:51:09,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:51:09,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:51:09,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:51:09,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:51:09,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 428 transitions, 5180 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:51:09,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:51:09,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:51:09,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:51:11,397 INFO L124 PetriNetUnfolderBase]: 3769/5985 cut-off events. [2024-06-21 16:51:11,397 INFO L125 PetriNetUnfolderBase]: For 1568870/1568875 co-relation queries the response was YES. [2024-06-21 16:51:11,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67880 conditions, 5985 events. 3769/5985 cut-off events. For 1568870/1568875 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 36359 event pairs, 811 based on Foata normal form. 6/5988 useless extension candidates. Maximal degree in co-relation 67709. Up to 5768 conditions per place. [2024-06-21 16:51:11,487 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 407 selfloop transitions, 37 changer transitions 0/448 dead transitions. [2024-06-21 16:51:11,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 448 transitions, 6483 flow [2024-06-21 16:51:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:51:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:51:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-21 16:51:11,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 16:51:11,489 INFO L175 Difference]: Start difference. First operand has 366 places, 428 transitions, 5180 flow. Second operand 8 states and 133 transitions. [2024-06-21 16:51:11,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 448 transitions, 6483 flow [2024-06-21 16:51:16,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 448 transitions, 6273 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-21 16:51:16,382 INFO L231 Difference]: Finished difference. Result has 369 places, 434 transitions, 5194 flow [2024-06-21 16:51:16,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4970, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5194, PETRI_PLACES=369, PETRI_TRANSITIONS=434} [2024-06-21 16:51:16,383 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 326 predicate places. [2024-06-21 16:51:16,383 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 434 transitions, 5194 flow [2024-06-21 16:51:16,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:51:16,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:51:16,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:51:16,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 16:51:16,384 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:51:16,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:51:16,384 INFO L85 PathProgramCache]: Analyzing trace with hash -745484961, now seen corresponding path program 8 times [2024-06-21 16:51:16,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:51:16,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177494975] [2024-06-21 16:51:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:51:16,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:51:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:51:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:51:17,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:51:17,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177494975] [2024-06-21 16:51:17,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177494975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:51:17,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:51:17,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:51:17,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035061990] [2024-06-21 16:51:17,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:51:17,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:51:17,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:51:17,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:51:17,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:51:17,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:51:17,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 434 transitions, 5194 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:51:17,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:51:17,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:51:17,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:51:18,705 INFO L124 PetriNetUnfolderBase]: 3779/6001 cut-off events. [2024-06-21 16:51:18,706 INFO L125 PetriNetUnfolderBase]: For 1591260/1591265 co-relation queries the response was YES. [2024-06-21 16:51:18,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68115 conditions, 6001 events. 3779/6001 cut-off events. For 1591260/1591265 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 36569 event pairs, 811 based on Foata normal form. 6/6004 useless extension candidates. Maximal degree in co-relation 67942. Up to 5802 conditions per place. [2024-06-21 16:51:18,802 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 416 selfloop transitions, 30 changer transitions 0/450 dead transitions. [2024-06-21 16:51:18,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 450 transitions, 6214 flow [2024-06-21 16:51:18,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:51:18,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:51:18,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-21 16:51:18,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-21 16:51:18,804 INFO L175 Difference]: Start difference. First operand has 369 places, 434 transitions, 5194 flow. Second operand 8 states and 130 transitions. [2024-06-21 16:51:18,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 450 transitions, 6214 flow [2024-06-21 16:51:24,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 450 transitions, 6088 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-21 16:51:24,230 INFO L231 Difference]: Finished difference. Result has 372 places, 438 transitions, 5226 flow [2024-06-21 16:51:24,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5086, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5226, PETRI_PLACES=372, PETRI_TRANSITIONS=438} [2024-06-21 16:51:24,231 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 329 predicate places. [2024-06-21 16:51:24,231 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 438 transitions, 5226 flow [2024-06-21 16:51:24,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:51:24,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:51:24,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:51:24,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 16:51:24,232 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:51:24,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:51:24,232 INFO L85 PathProgramCache]: Analyzing trace with hash -973178721, now seen corresponding path program 9 times [2024-06-21 16:51:24,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:51:24,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221907262] [2024-06-21 16:51:24,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:51:24,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:51:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:51:24,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:51:24,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:51:24,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221907262] [2024-06-21 16:51:24,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221907262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:51:24,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:51:24,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:51:24,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632245005] [2024-06-21 16:51:24,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:51:24,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:51:24,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:51:24,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:51:24,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:51:25,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:51:25,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 438 transitions, 5226 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:51:25,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:51:25,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:51:25,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:51:26,598 INFO L124 PetriNetUnfolderBase]: 3789/6021 cut-off events. [2024-06-21 16:51:26,598 INFO L125 PetriNetUnfolderBase]: For 1615068/1615073 co-relation queries the response was YES. [2024-06-21 16:51:26,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68316 conditions, 6021 events. 3789/6021 cut-off events. For 1615068/1615073 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 36722 event pairs, 801 based on Foata normal form. 6/6024 useless extension candidates. Maximal degree in co-relation 68143. Up to 5732 conditions per place. [2024-06-21 16:51:26,689 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 390 selfloop transitions, 63 changer transitions 0/457 dead transitions. [2024-06-21 16:51:26,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 457 transitions, 6751 flow [2024-06-21 16:51:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:51:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:51:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-21 16:51:26,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-21 16:51:26,690 INFO L175 Difference]: Start difference. First operand has 372 places, 438 transitions, 5226 flow. Second operand 8 states and 137 transitions. [2024-06-21 16:51:26,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 457 transitions, 6751 flow [2024-06-21 16:51:31,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 457 transitions, 6661 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-21 16:51:31,767 INFO L231 Difference]: Finished difference. Result has 375 places, 441 transitions, 5329 flow [2024-06-21 16:51:31,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5136, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5329, PETRI_PLACES=375, PETRI_TRANSITIONS=441} [2024-06-21 16:51:31,768 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 332 predicate places. [2024-06-21 16:51:31,768 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 441 transitions, 5329 flow [2024-06-21 16:51:31,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:51:31,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:51:31,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:51:31,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 16:51:31,768 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:51:31,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:51:31,769 INFO L85 PathProgramCache]: Analyzing trace with hash -973594617, now seen corresponding path program 11 times [2024-06-21 16:51:31,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:51:31,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193556490] [2024-06-21 16:51:31,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:51:31,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:51:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:51:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:51:32,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:51:32,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193556490] [2024-06-21 16:51:32,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193556490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:51:32,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:51:32,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:51:32,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707569931] [2024-06-21 16:51:32,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:51:32,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:51:32,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:51:32,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:51:32,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:51:32,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:51:32,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 441 transitions, 5329 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:51:32,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:51:32,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:51:32,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:51:34,079 INFO L124 PetriNetUnfolderBase]: 3688/5918 cut-off events. [2024-06-21 16:51:34,079 INFO L125 PetriNetUnfolderBase]: For 1626952/1626957 co-relation queries the response was YES. [2024-06-21 16:51:34,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67628 conditions, 5918 events. 3688/5918 cut-off events. For 1626952/1626957 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 36668 event pairs, 774 based on Foata normal form. 6/5921 useless extension candidates. Maximal degree in co-relation 67454. Up to 5534 conditions per place. [2024-06-21 16:51:34,167 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 384 selfloop transitions, 39 changer transitions 0/456 dead transitions. [2024-06-21 16:51:34,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 456 transitions, 6493 flow [2024-06-21 16:51:34,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:51:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:51:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-21 16:51:34,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-21 16:51:34,168 INFO L175 Difference]: Start difference. First operand has 375 places, 441 transitions, 5329 flow. Second operand 8 states and 142 transitions. [2024-06-21 16:51:34,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 456 transitions, 6493 flow [2024-06-21 16:51:38,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 456 transitions, 6189 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-21 16:51:38,826 INFO L231 Difference]: Finished difference. Result has 376 places, 441 transitions, 5109 flow [2024-06-21 16:51:38,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5025, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5109, PETRI_PLACES=376, PETRI_TRANSITIONS=441} [2024-06-21 16:51:38,827 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 333 predicate places. [2024-06-21 16:51:38,827 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 441 transitions, 5109 flow [2024-06-21 16:51:38,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:51:38,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:51:38,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:51:38,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 16:51:38,827 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:51:38,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:51:38,828 INFO L85 PathProgramCache]: Analyzing trace with hash -973594431, now seen corresponding path program 10 times [2024-06-21 16:51:38,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:51:38,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125912458] [2024-06-21 16:51:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:51:38,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:51:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:51:39,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:51:39,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:51:39,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125912458] [2024-06-21 16:51:39,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125912458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:51:39,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:51:39,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:51:39,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706918912] [2024-06-21 16:51:39,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:51:39,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:51:39,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:51:39,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:51:39,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:51:39,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:51:39,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 441 transitions, 5109 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:51:39,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:51:39,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:51:39,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:51:41,211 INFO L124 PetriNetUnfolderBase]: 3777/6003 cut-off events. [2024-06-21 16:51:41,211 INFO L125 PetriNetUnfolderBase]: For 1632575/1632580 co-relation queries the response was YES. [2024-06-21 16:51:41,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67877 conditions, 6003 events. 3777/6003 cut-off events. For 1632575/1632580 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 36591 event pairs, 799 based on Foata normal form. 6/6006 useless extension candidates. Maximal degree in co-relation 67703. Up to 5719 conditions per place. [2024-06-21 16:51:41,299 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 390 selfloop transitions, 62 changer transitions 0/456 dead transitions. [2024-06-21 16:51:41,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 456 transitions, 6333 flow [2024-06-21 16:51:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:51:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:51:41,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-21 16:51:41,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-21 16:51:41,301 INFO L175 Difference]: Start difference. First operand has 376 places, 441 transitions, 5109 flow. Second operand 8 states and 136 transitions. [2024-06-21 16:51:41,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 456 transitions, 6333 flow [2024-06-21 16:51:45,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 456 transitions, 6158 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-21 16:51:45,129 INFO L231 Difference]: Finished difference. Result has 377 places, 441 transitions, 5064 flow [2024-06-21 16:51:45,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4934, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5064, PETRI_PLACES=377, PETRI_TRANSITIONS=441} [2024-06-21 16:51:45,130 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 334 predicate places. [2024-06-21 16:51:45,130 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 441 transitions, 5064 flow [2024-06-21 16:51:45,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:51:45,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:51:45,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:51:45,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 16:51:45,130 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:51:45,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:51:45,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1150726137, now seen corresponding path program 12 times [2024-06-21 16:51:45,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:51:45,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87090359] [2024-06-21 16:51:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:51:45,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:51:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:51:45,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:51:45,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:51:45,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87090359] [2024-06-21 16:51:45,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87090359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:51:45,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:51:45,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:51:45,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476786849] [2024-06-21 16:51:45,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:51:45,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:51:45,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:51:45,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:51:45,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:51:45,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:51:45,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 441 transitions, 5064 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:51:45,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:51:45,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:51:45,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:51:47,390 INFO L124 PetriNetUnfolderBase]: 3679/5895 cut-off events. [2024-06-21 16:51:47,390 INFO L125 PetriNetUnfolderBase]: For 1635486/1635491 co-relation queries the response was YES. [2024-06-21 16:51:47,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66581 conditions, 5895 events. 3679/5895 cut-off events. For 1635486/1635491 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 36354 event pairs, 776 based on Foata normal form. 6/5898 useless extension candidates. Maximal degree in co-relation 66407. Up to 5562 conditions per place. [2024-06-21 16:51:47,659 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 399 selfloop transitions, 22 changer transitions 0/454 dead transitions. [2024-06-21 16:51:47,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 454 transitions, 5964 flow [2024-06-21 16:51:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:51:47,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:51:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-21 16:51:47,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-21 16:51:47,661 INFO L175 Difference]: Start difference. First operand has 377 places, 441 transitions, 5064 flow. Second operand 8 states and 137 transitions. [2024-06-21 16:51:47,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 454 transitions, 5964 flow [2024-06-21 16:51:51,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 454 transitions, 5782 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-21 16:51:51,829 INFO L231 Difference]: Finished difference. Result has 379 places, 441 transitions, 4932 flow [2024-06-21 16:51:51,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4882, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4932, PETRI_PLACES=379, PETRI_TRANSITIONS=441} [2024-06-21 16:51:51,830 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 336 predicate places. [2024-06-21 16:51:51,830 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 441 transitions, 4932 flow [2024-06-21 16:51:51,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:51:51,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:51:51,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:51:51,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 16:51:51,830 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:51:51,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:51:51,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1150725951, now seen corresponding path program 11 times [2024-06-21 16:51:51,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:51:51,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245504496] [2024-06-21 16:51:51,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:51:51,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:51:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:51:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:51:52,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:51:52,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245504496] [2024-06-21 16:51:52,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245504496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:51:52,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:51:52,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:51:52,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573296793] [2024-06-21 16:51:52,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:51:52,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:51:52,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:51:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:51:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:51:52,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:51:52,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 441 transitions, 4932 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:51:52,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:51:52,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:51:52,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:51:54,079 INFO L124 PetriNetUnfolderBase]: 3765/5979 cut-off events. [2024-06-21 16:51:54,079 INFO L125 PetriNetUnfolderBase]: For 1641544/1641549 co-relation queries the response was YES. [2024-06-21 16:51:54,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66887 conditions, 5979 events. 3765/5979 cut-off events. For 1641544/1641549 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 36398 event pairs, 801 based on Foata normal form. 6/5982 useless extension candidates. Maximal degree in co-relation 66712. Up to 5761 conditions per place. [2024-06-21 16:51:54,181 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 414 selfloop transitions, 37 changer transitions 0/455 dead transitions. [2024-06-21 16:51:54,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 455 transitions, 6142 flow [2024-06-21 16:51:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:51:54,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:51:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-21 16:51:54,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-21 16:51:54,183 INFO L175 Difference]: Start difference. First operand has 379 places, 441 transitions, 4932 flow. Second operand 8 states and 134 transitions. [2024-06-21 16:51:54,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 455 transitions, 6142 flow [2024-06-21 16:51:58,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 455 transitions, 6008 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 16:51:58,441 INFO L231 Difference]: Finished difference. Result has 378 places, 441 transitions, 4878 flow [2024-06-21 16:51:58,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4798, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4878, PETRI_PLACES=378, PETRI_TRANSITIONS=441} [2024-06-21 16:51:58,441 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 335 predicate places. [2024-06-21 16:51:58,441 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 441 transitions, 4878 flow [2024-06-21 16:51:58,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:51:58,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:51:58,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:51:58,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 16:51:58,442 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:51:58,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:51:58,443 INFO L85 PathProgramCache]: Analyzing trace with hash -700812129, now seen corresponding path program 4 times [2024-06-21 16:51:58,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:51:58,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362048261] [2024-06-21 16:51:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:51:58,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:51:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:51:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:51:59,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:51:59,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362048261] [2024-06-21 16:51:59,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362048261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:51:59,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:51:59,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:51:59,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809838303] [2024-06-21 16:51:59,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:51:59,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:51:59,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:51:59,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:51:59,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:51:59,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:51:59,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 441 transitions, 4878 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:51:59,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:51:59,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:51:59,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:52:01,224 INFO L124 PetriNetUnfolderBase]: 3673/5883 cut-off events. [2024-06-21 16:52:01,224 INFO L125 PetriNetUnfolderBase]: For 1651545/1651548 co-relation queries the response was YES. [2024-06-21 16:52:01,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66298 conditions, 5883 events. 3673/5883 cut-off events. For 1651545/1651548 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 36269 event pairs, 786 based on Foata normal form. 1/5880 useless extension candidates. Maximal degree in co-relation 66122. Up to 5540 conditions per place. [2024-06-21 16:52:01,309 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 390 selfloop transitions, 29 changer transitions 0/452 dead transitions. [2024-06-21 16:52:01,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 452 transitions, 5742 flow [2024-06-21 16:52:01,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:52:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:52:01,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-21 16:52:01,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-21 16:52:01,324 INFO L175 Difference]: Start difference. First operand has 378 places, 441 transitions, 4878 flow. Second operand 8 states and 137 transitions. [2024-06-21 16:52:01,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 452 transitions, 5742 flow [2024-06-21 16:52:07,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 452 transitions, 5532 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 16:52:07,180 INFO L231 Difference]: Finished difference. Result has 377 places, 441 transitions, 4732 flow [2024-06-21 16:52:07,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4668, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4732, PETRI_PLACES=377, PETRI_TRANSITIONS=441} [2024-06-21 16:52:07,181 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 334 predicate places. [2024-06-21 16:52:07,181 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 441 transitions, 4732 flow [2024-06-21 16:52:07,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:52:07,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:52:07,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:52:07,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 16:52:07,182 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:52:07,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:52:07,182 INFO L85 PathProgramCache]: Analyzing trace with hash -700569957, now seen corresponding path program 12 times [2024-06-21 16:52:07,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:52:07,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88583353] [2024-06-21 16:52:07,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:52:07,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:52:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:52:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:52:07,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:52:07,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88583353] [2024-06-21 16:52:07,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88583353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:52:07,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:52:07,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:52:07,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486447647] [2024-06-21 16:52:07,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:52:07,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:52:07,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:52:07,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:52:07,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:52:07,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:52:07,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 441 transitions, 4732 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:52:07,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:52:07,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:52:07,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:52:09,658 INFO L124 PetriNetUnfolderBase]: 3756/5967 cut-off events. [2024-06-21 16:52:09,658 INFO L125 PetriNetUnfolderBase]: For 1664474/1664479 co-relation queries the response was YES. [2024-06-21 16:52:09,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66590 conditions, 5967 events. 3756/5967 cut-off events. For 1664474/1664479 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 36310 event pairs, 804 based on Foata normal form. 6/5970 useless extension candidates. Maximal degree in co-relation 66414. Up to 5772 conditions per place. [2024-06-21 16:52:09,756 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 420 selfloop transitions, 29 changer transitions 0/453 dead transitions. [2024-06-21 16:52:09,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 453 transitions, 5672 flow [2024-06-21 16:52:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:52:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:52:09,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-21 16:52:09,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-06-21 16:52:09,757 INFO L175 Difference]: Start difference. First operand has 377 places, 441 transitions, 4732 flow. Second operand 8 states and 131 transitions. [2024-06-21 16:52:09,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 453 transitions, 5672 flow [2024-06-21 16:52:14,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 453 transitions, 5536 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 16:52:14,064 INFO L231 Difference]: Finished difference. Result has 376 places, 441 transitions, 4660 flow [2024-06-21 16:52:14,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4596, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4660, PETRI_PLACES=376, PETRI_TRANSITIONS=441} [2024-06-21 16:52:14,064 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 333 predicate places. [2024-06-21 16:52:14,064 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 441 transitions, 4660 flow [2024-06-21 16:52:14,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:52:14,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:52:14,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:52:14,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 16:52:14,066 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:52:14,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:52:14,067 INFO L85 PathProgramCache]: Analyzing trace with hash -700930425, now seen corresponding path program 4 times [2024-06-21 16:52:14,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:52:14,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555393643] [2024-06-21 16:52:14,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:52:14,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:52:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:52:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:52:14,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:52:14,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555393643] [2024-06-21 16:52:14,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555393643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:52:14,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:52:14,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:52:14,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742416664] [2024-06-21 16:52:14,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:52:14,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:52:14,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:52:14,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:52:14,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:52:15,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:52:15,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 441 transitions, 4660 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:52:15,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:52:15,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:52:15,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:52:16,622 INFO L124 PetriNetUnfolderBase]: 3661/5865 cut-off events. [2024-06-21 16:52:16,622 INFO L125 PetriNetUnfolderBase]: For 1674569/1674572 co-relation queries the response was YES. [2024-06-21 16:52:16,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65805 conditions, 5865 events. 3661/5865 cut-off events. For 1674569/1674572 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 36150 event pairs, 784 based on Foata normal form. 2/5863 useless extension candidates. Maximal degree in co-relation 65629. Up to 5523 conditions per place. [2024-06-21 16:52:16,719 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 392 selfloop transitions, 28 changer transitions 0/453 dead transitions. [2024-06-21 16:52:16,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 453 transitions, 5528 flow [2024-06-21 16:52:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:52:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:52:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-21 16:52:16,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-21 16:52:16,722 INFO L175 Difference]: Start difference. First operand has 376 places, 441 transitions, 4660 flow. Second operand 8 states and 137 transitions. [2024-06-21 16:52:16,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 453 transitions, 5528 flow [2024-06-21 16:52:21,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 453 transitions, 5404 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 16:52:21,318 INFO L231 Difference]: Finished difference. Result has 375 places, 441 transitions, 4597 flow [2024-06-21 16:52:21,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4536, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4597, PETRI_PLACES=375, PETRI_TRANSITIONS=441} [2024-06-21 16:52:21,319 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 332 predicate places. [2024-06-21 16:52:21,319 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 441 transitions, 4597 flow [2024-06-21 16:52:21,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 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) [2024-06-21 16:52:21,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:52:21,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:52:21,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 16:52:21,322 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:52:21,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:52:21,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1317623925, now seen corresponding path program 2 times [2024-06-21 16:52:21,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:52:21,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547290120] [2024-06-21 16:52:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:52:21,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:52:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:52:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:52:22,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:52:22,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547290120] [2024-06-21 16:52:22,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547290120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:52:22,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:52:22,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:52:22,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477927580] [2024-06-21 16:52:22,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:52:22,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:52:22,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:52:22,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:52:22,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:52:22,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:52:22,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 441 transitions, 4597 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:52:22,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:52:22,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:52:22,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:52:23,875 INFO L124 PetriNetUnfolderBase]: 3771/5989 cut-off events. [2024-06-21 16:52:23,875 INFO L125 PetriNetUnfolderBase]: For 1713362/1713365 co-relation queries the response was YES. [2024-06-21 16:52:23,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66807 conditions, 5989 events. 3771/5989 cut-off events. For 1713362/1713365 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 36514 event pairs, 814 based on Foata normal form. 4/5989 useless extension candidates. Maximal degree in co-relation 66630. Up to 5657 conditions per place. [2024-06-21 16:52:23,960 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 401 selfloop transitions, 59 changer transitions 0/464 dead transitions. [2024-06-21 16:52:23,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 464 transitions, 5955 flow [2024-06-21 16:52:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:52:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:52:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-21 16:52:23,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-21 16:52:23,962 INFO L175 Difference]: Start difference. First operand has 375 places, 441 transitions, 4597 flow. Second operand 9 states and 157 transitions. [2024-06-21 16:52:23,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 464 transitions, 5955 flow [2024-06-21 16:52:29,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 464 transitions, 5880 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 16:52:29,325 INFO L231 Difference]: Finished difference. Result has 377 places, 444 transitions, 4722 flow [2024-06-21 16:52:29,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4522, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4722, PETRI_PLACES=377, PETRI_TRANSITIONS=444} [2024-06-21 16:52:29,326 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 334 predicate places. [2024-06-21 16:52:29,326 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 444 transitions, 4722 flow [2024-06-21 16:52:29,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:52:29,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:52:29,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:52:29,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 16:52:29,327 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:52:29,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:52:29,327 INFO L85 PathProgramCache]: Analyzing trace with hash -736697763, now seen corresponding path program 3 times [2024-06-21 16:52:29,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:52:29,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505478549] [2024-06-21 16:52:29,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:52:29,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:52:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:52:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:52:30,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:52:30,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505478549] [2024-06-21 16:52:30,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505478549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:52:30,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:52:30,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:52:30,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850164382] [2024-06-21 16:52:30,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:52:30,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:52:30,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:52:30,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:52:30,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:52:30,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:52:30,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 444 transitions, 4722 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:52:30,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:52:30,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:52:30,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:52:32,021 INFO L124 PetriNetUnfolderBase]: 3791/6014 cut-off events. [2024-06-21 16:52:32,021 INFO L125 PetriNetUnfolderBase]: For 1739546/1739546 co-relation queries the response was YES. [2024-06-21 16:52:32,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67369 conditions, 6014 events. 3791/6014 cut-off events. For 1739546/1739546 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 36602 event pairs, 804 based on Foata normal form. 4/6016 useless extension candidates. Maximal degree in co-relation 67191. Up to 5832 conditions per place. [2024-06-21 16:52:32,111 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 435 selfloop transitions, 22 changer transitions 0/461 dead transitions. [2024-06-21 16:52:32,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 461 transitions, 5766 flow [2024-06-21 16:52:32,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:52:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:52:32,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-21 16:52:32,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2024-06-21 16:52:32,113 INFO L175 Difference]: Start difference. First operand has 377 places, 444 transitions, 4722 flow. Second operand 9 states and 142 transitions. [2024-06-21 16:52:32,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 461 transitions, 5766 flow [2024-06-21 16:52:36,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 461 transitions, 5566 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-21 16:52:36,483 INFO L231 Difference]: Finished difference. Result has 379 places, 447 transitions, 4661 flow [2024-06-21 16:52:36,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4530, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4661, PETRI_PLACES=379, PETRI_TRANSITIONS=447} [2024-06-21 16:52:36,488 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 336 predicate places. [2024-06-21 16:52:36,488 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 447 transitions, 4661 flow [2024-06-21 16:52:36,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:52:36,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:52:36,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:52:36,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 16:52:36,489 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:52:36,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:52:36,489 INFO L85 PathProgramCache]: Analyzing trace with hash -287254149, now seen corresponding path program 4 times [2024-06-21 16:52:36,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:52:36,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807532093] [2024-06-21 16:52:36,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:52:36,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:52:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:52:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:52:37,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:52:37,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807532093] [2024-06-21 16:52:37,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807532093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:52:37,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:52:37,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:52:37,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58118534] [2024-06-21 16:52:37,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:52:37,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:52:37,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:52:37,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:52:37,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:52:37,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:52:37,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 447 transitions, 4661 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:52:37,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:52:37,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:52:37,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:52:39,042 INFO L124 PetriNetUnfolderBase]: 3811/6041 cut-off events. [2024-06-21 16:52:39,042 INFO L125 PetriNetUnfolderBase]: For 1764092/1764095 co-relation queries the response was YES. [2024-06-21 16:52:39,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67563 conditions, 6041 events. 3811/6041 cut-off events. For 1764092/1764095 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 36761 event pairs, 812 based on Foata normal form. 4/6041 useless extension candidates. Maximal degree in co-relation 67384. Up to 5689 conditions per place. [2024-06-21 16:52:39,130 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 393 selfloop transitions, 72 changer transitions 0/469 dead transitions. [2024-06-21 16:52:39,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 469 transitions, 6021 flow [2024-06-21 16:52:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:52:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:52:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-21 16:52:39,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-21 16:52:39,131 INFO L175 Difference]: Start difference. First operand has 379 places, 447 transitions, 4661 flow. Second operand 9 states and 155 transitions. [2024-06-21 16:52:39,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 469 transitions, 6021 flow [2024-06-21 16:52:44,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 469 transitions, 5835 flow, removed 33 selfloop flow, removed 11 redundant places. [2024-06-21 16:52:44,018 INFO L231 Difference]: Finished difference. Result has 377 places, 450 transitions, 4705 flow [2024-06-21 16:52:44,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4475, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4705, PETRI_PLACES=377, PETRI_TRANSITIONS=450} [2024-06-21 16:52:44,019 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 334 predicate places. [2024-06-21 16:52:44,019 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 450 transitions, 4705 flow [2024-06-21 16:52:44,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:52:44,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:52:44,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:52:44,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 16:52:44,019 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:52:44,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:52:44,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1981380045, now seen corresponding path program 5 times [2024-06-21 16:52:44,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:52:44,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085849776] [2024-06-21 16:52:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:52:44,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:52:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:52:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:52:44,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:52:44,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085849776] [2024-06-21 16:52:44,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085849776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:52:44,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:52:44,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:52:44,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92398379] [2024-06-21 16:52:44,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:52:44,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:52:44,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:52:44,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:52:44,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:52:44,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:52:44,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 450 transitions, 4705 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:52:44,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:52:44,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:52:44,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:52:46,705 INFO L124 PetriNetUnfolderBase]: 3799/6027 cut-off events. [2024-06-21 16:52:46,706 INFO L125 PetriNetUnfolderBase]: For 1753003/1753006 co-relation queries the response was YES. [2024-06-21 16:52:46,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67031 conditions, 6027 events. 3799/6027 cut-off events. For 1753003/1753006 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 36728 event pairs, 814 based on Foata normal form. 4/6027 useless extension candidates. Maximal degree in co-relation 66853. Up to 5681 conditions per place. [2024-06-21 16:52:46,797 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 397 selfloop transitions, 68 changer transitions 0/469 dead transitions. [2024-06-21 16:52:46,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 469 transitions, 5739 flow [2024-06-21 16:52:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:52:46,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:52:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-21 16:52:46,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-21 16:52:46,799 INFO L175 Difference]: Start difference. First operand has 377 places, 450 transitions, 4705 flow. Second operand 9 states and 155 transitions. [2024-06-21 16:52:46,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 469 transitions, 5739 flow [2024-06-21 16:52:52,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 469 transitions, 5496 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-21 16:52:52,600 INFO L231 Difference]: Finished difference. Result has 380 places, 450 transitions, 4604 flow [2024-06-21 16:52:52,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4462, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4604, PETRI_PLACES=380, PETRI_TRANSITIONS=450} [2024-06-21 16:52:52,601 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 337 predicate places. [2024-06-21 16:52:52,601 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 450 transitions, 4604 flow [2024-06-21 16:52:52,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:52:52,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:52:52,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:52:52,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 16:52:52,602 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:52:52,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:52:52,602 INFO L85 PathProgramCache]: Analyzing trace with hash 933723295, now seen corresponding path program 1 times [2024-06-21 16:52:52,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:52:52,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069287513] [2024-06-21 16:52:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:52:52,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:52:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:52:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:52:53,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:52:53,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069287513] [2024-06-21 16:52:53,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069287513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:52:53,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:52:53,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:52:53,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572795682] [2024-06-21 16:52:53,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:52:53,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:52:53,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:52:53,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:52:53,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:52:53,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:52:53,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 450 transitions, 4604 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 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) [2024-06-21 16:52:53,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:52:53,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:52:53,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:52:55,228 INFO L124 PetriNetUnfolderBase]: 3557/5778 cut-off events. [2024-06-21 16:52:55,229 INFO L125 PetriNetUnfolderBase]: For 1545413/1545413 co-relation queries the response was YES. [2024-06-21 16:52:55,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62092 conditions, 5778 events. 3557/5778 cut-off events. For 1545413/1545413 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 36407 event pairs, 676 based on Foata normal form. 2/5767 useless extension candidates. Maximal degree in co-relation 61913. Up to 5336 conditions per place. [2024-06-21 16:52:55,322 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 415 selfloop transitions, 28 changer transitions 0/482 dead transitions. [2024-06-21 16:52:55,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 482 transitions, 5954 flow [2024-06-21 16:52:55,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:52:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:52:55,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-21 16:52:55,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-21 16:52:55,323 INFO L175 Difference]: Start difference. First operand has 380 places, 450 transitions, 4604 flow. Second operand 10 states and 185 transitions. [2024-06-21 16:52:55,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 482 transitions, 5954 flow [2024-06-21 16:52:59,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 482 transitions, 5673 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-21 16:52:59,929 INFO L231 Difference]: Finished difference. Result has 379 places, 454 transitions, 4520 flow [2024-06-21 16:52:59,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4327, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4520, PETRI_PLACES=379, PETRI_TRANSITIONS=454} [2024-06-21 16:52:59,929 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 336 predicate places. [2024-06-21 16:52:59,930 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 454 transitions, 4520 flow [2024-06-21 16:52:59,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 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) [2024-06-21 16:52:59,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:52:59,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:52:59,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 16:52:59,930 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:52:59,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:52:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash 933783869, now seen corresponding path program 1 times [2024-06-21 16:52:59,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:52:59,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511591836] [2024-06-21 16:52:59,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:52:59,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:52:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:53:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:53:00,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:53:00,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511591836] [2024-06-21 16:53:00,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511591836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:53:00,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:53:00,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:53:00,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660996514] [2024-06-21 16:53:00,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:53:00,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:53:00,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:53:00,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:53:00,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:53:00,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:53:00,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 454 transitions, 4520 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:53:00,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:53:00,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:53:00,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:53:02,386 INFO L124 PetriNetUnfolderBase]: 3660/5886 cut-off events. [2024-06-21 16:53:02,386 INFO L125 PetriNetUnfolderBase]: For 1552628/1552628 co-relation queries the response was YES. [2024-06-21 16:53:02,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62165 conditions, 5886 events. 3660/5886 cut-off events. For 1552628/1552628 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 36647 event pairs, 736 based on Foata normal form. 1/5874 useless extension candidates. Maximal degree in co-relation 61987. Up to 5609 conditions per place. [2024-06-21 16:53:02,474 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 443 selfloop transitions, 30 changer transitions 0/483 dead transitions. [2024-06-21 16:53:02,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 483 transitions, 5964 flow [2024-06-21 16:53:02,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:53:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:53:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-21 16:53:02,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-21 16:53:02,475 INFO L175 Difference]: Start difference. First operand has 379 places, 454 transitions, 4520 flow. Second operand 10 states and 174 transitions. [2024-06-21 16:53:02,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 483 transitions, 5964 flow [2024-06-21 16:53:06,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 483 transitions, 5848 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-21 16:53:06,346 INFO L231 Difference]: Finished difference. Result has 383 places, 460 transitions, 4652 flow [2024-06-21 16:53:06,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4652, PETRI_PLACES=383, PETRI_TRANSITIONS=460} [2024-06-21 16:53:06,347 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 340 predicate places. [2024-06-21 16:53:06,347 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 460 transitions, 4652 flow [2024-06-21 16:53:06,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:53:06,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:53:06,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:53:06,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 16:53:06,347 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:53:06,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:53:06,348 INFO L85 PathProgramCache]: Analyzing trace with hash 933783745, now seen corresponding path program 2 times [2024-06-21 16:53:06,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:53:06,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187799715] [2024-06-21 16:53:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:53:06,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:53:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:53:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:53:07,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:53:07,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187799715] [2024-06-21 16:53:07,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187799715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:53:07,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:53:07,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:53:07,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351349291] [2024-06-21 16:53:07,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:53:07,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:53:07,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:53:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:53:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:53:07,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:53:07,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 460 transitions, 4652 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 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) [2024-06-21 16:53:07,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:53:07,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:53:07,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:53:08,999 INFO L124 PetriNetUnfolderBase]: 3588/5818 cut-off events. [2024-06-21 16:53:08,999 INFO L125 PetriNetUnfolderBase]: For 1593093/1593093 co-relation queries the response was YES. [2024-06-21 16:53:09,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62331 conditions, 5818 events. 3588/5818 cut-off events. For 1593093/1593093 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 36641 event pairs, 714 based on Foata normal form. 2/5807 useless extension candidates. Maximal degree in co-relation 62151. Up to 5402 conditions per place. [2024-06-21 16:53:09,088 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 419 selfloop transitions, 25 changer transitions 0/485 dead transitions. [2024-06-21 16:53:09,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 485 transitions, 5636 flow [2024-06-21 16:53:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:53:09,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:53:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-21 16:53:09,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 16:53:09,090 INFO L175 Difference]: Start difference. First operand has 383 places, 460 transitions, 4652 flow. Second operand 10 states and 180 transitions. [2024-06-21 16:53:09,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 485 transitions, 5636 flow [2024-06-21 16:53:15,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 485 transitions, 5512 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-21 16:53:15,438 INFO L231 Difference]: Finished difference. Result has 387 places, 462 transitions, 4627 flow [2024-06-21 16:53:15,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4528, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4627, PETRI_PLACES=387, PETRI_TRANSITIONS=462} [2024-06-21 16:53:15,439 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 344 predicate places. [2024-06-21 16:53:15,439 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 462 transitions, 4627 flow [2024-06-21 16:53:15,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 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) [2024-06-21 16:53:15,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:53:15,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:53:15,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 16:53:15,440 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:53:15,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:53:15,440 INFO L85 PathProgramCache]: Analyzing trace with hash 675292501, now seen corresponding path program 1 times [2024-06-21 16:53:15,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:53:15,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544383950] [2024-06-21 16:53:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:53:15,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:53:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:53:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:53:16,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:53:16,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544383950] [2024-06-21 16:53:16,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544383950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:53:16,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:53:16,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:53:16,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234450909] [2024-06-21 16:53:16,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:53:16,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:53:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:53:16,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:53:16,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:53:16,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:53:16,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 462 transitions, 4627 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:53:16,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:53:16,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:53:16,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:53:17,790 INFO L124 PetriNetUnfolderBase]: 3678/5914 cut-off events. [2024-06-21 16:53:17,790 INFO L125 PetriNetUnfolderBase]: For 1610914/1610914 co-relation queries the response was YES. [2024-06-21 16:53:17,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63037 conditions, 5914 events. 3678/5914 cut-off events. For 1610914/1610914 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 36820 event pairs, 735 based on Foata normal form. 2/5903 useless extension candidates. Maximal degree in co-relation 62855. Up to 5653 conditions per place. [2024-06-21 16:53:17,879 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 454 selfloop transitions, 20 changer transitions 0/484 dead transitions. [2024-06-21 16:53:17,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 484 transitions, 5701 flow [2024-06-21 16:53:17,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:53:17,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:53:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-21 16:53:17,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-21 16:53:17,880 INFO L175 Difference]: Start difference. First operand has 387 places, 462 transitions, 4627 flow. Second operand 9 states and 154 transitions. [2024-06-21 16:53:17,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 484 transitions, 5701 flow [2024-06-21 16:53:23,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 484 transitions, 5622 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 16:53:23,477 INFO L231 Difference]: Finished difference. Result has 388 places, 465 transitions, 4678 flow [2024-06-21 16:53:23,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4548, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4678, PETRI_PLACES=388, PETRI_TRANSITIONS=465} [2024-06-21 16:53:23,477 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 345 predicate places. [2024-06-21 16:53:23,478 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 465 transitions, 4678 flow [2024-06-21 16:53:23,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:53:23,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:53:23,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:53:23,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 16:53:23,478 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:53:23,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:53:23,478 INFO L85 PathProgramCache]: Analyzing trace with hash 936585029, now seen corresponding path program 2 times [2024-06-21 16:53:23,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:53:23,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817300919] [2024-06-21 16:53:23,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:53:23,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:53:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:53:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:53:24,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:53:24,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817300919] [2024-06-21 16:53:24,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817300919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:53:24,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:53:24,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:53:24,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531567694] [2024-06-21 16:53:24,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:53:24,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:53:24,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:53:24,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:53:24,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:53:24,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:53:24,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 465 transitions, 4678 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:53:24,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:53:24,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:53:24,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:53:25,941 INFO L124 PetriNetUnfolderBase]: 3683/5921 cut-off events. [2024-06-21 16:53:25,941 INFO L125 PetriNetUnfolderBase]: For 1621593/1621593 co-relation queries the response was YES. [2024-06-21 16:53:26,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63455 conditions, 5921 events. 3683/5921 cut-off events. For 1621593/1621593 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 36853 event pairs, 735 based on Foata normal form. 1/5909 useless extension candidates. Maximal degree in co-relation 63272. Up to 5663 conditions per place. [2024-06-21 16:53:26,038 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 456 selfloop transitions, 20 changer transitions 0/486 dead transitions. [2024-06-21 16:53:26,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 486 transitions, 5750 flow [2024-06-21 16:53:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:53:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:53:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-21 16:53:26,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-21 16:53:26,039 INFO L175 Difference]: Start difference. First operand has 388 places, 465 transitions, 4678 flow. Second operand 9 states and 153 transitions. [2024-06-21 16:53:26,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 486 transitions, 5750 flow [2024-06-21 16:53:32,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 486 transitions, 5642 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-21 16:53:32,674 INFO L231 Difference]: Finished difference. Result has 390 places, 468 transitions, 4698 flow [2024-06-21 16:53:32,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4570, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4698, PETRI_PLACES=390, PETRI_TRANSITIONS=468} [2024-06-21 16:53:32,675 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 347 predicate places. [2024-06-21 16:53:32,675 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 468 transitions, 4698 flow [2024-06-21 16:53:32,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:53:32,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:53:32,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:53:32,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 16:53:32,675 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:53:32,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:53:32,676 INFO L85 PathProgramCache]: Analyzing trace with hash 936580255, now seen corresponding path program 3 times [2024-06-21 16:53:32,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:53:32,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903002376] [2024-06-21 16:53:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:53:32,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:53:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:53:33,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:53:33,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:53:33,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903002376] [2024-06-21 16:53:33,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903002376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:53:33,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:53:33,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:53:33,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411794729] [2024-06-21 16:53:33,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:53:33,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:53:33,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:53:33,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:53:33,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:53:33,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:53:33,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 468 transitions, 4698 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 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) [2024-06-21 16:53:33,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:53:33,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:53:33,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:53:35,286 INFO L124 PetriNetUnfolderBase]: 3597/5833 cut-off events. [2024-06-21 16:53:35,286 INFO L125 PetriNetUnfolderBase]: For 1637183/1637183 co-relation queries the response was YES. [2024-06-21 16:53:35,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62759 conditions, 5833 events. 3597/5833 cut-off events. For 1637183/1637183 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 36714 event pairs, 712 based on Foata normal form. 2/5822 useless extension candidates. Maximal degree in co-relation 62575. Up to 5425 conditions per place. [2024-06-21 16:53:35,382 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 426 selfloop transitions, 19 changer transitions 0/487 dead transitions. [2024-06-21 16:53:35,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 487 transitions, 5634 flow [2024-06-21 16:53:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:53:35,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:53:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-21 16:53:35,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-21 16:53:35,384 INFO L175 Difference]: Start difference. First operand has 390 places, 468 transitions, 4698 flow. Second operand 9 states and 161 transitions. [2024-06-21 16:53:35,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 487 transitions, 5634 flow [2024-06-21 16:53:40,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 487 transitions, 5504 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-21 16:53:40,895 INFO L231 Difference]: Finished difference. Result has 392 places, 468 transitions, 4611 flow [2024-06-21 16:53:40,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4568, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4611, PETRI_PLACES=392, PETRI_TRANSITIONS=468} [2024-06-21 16:53:40,896 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 349 predicate places. [2024-06-21 16:53:40,896 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 468 transitions, 4611 flow [2024-06-21 16:53:40,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 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) [2024-06-21 16:53:40,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:53:40,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:53:40,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 16:53:40,897 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:53:40,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:53:40,897 INFO L85 PathProgramCache]: Analyzing trace with hash 936580379, now seen corresponding path program 3 times [2024-06-21 16:53:40,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:53:40,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16517737] [2024-06-21 16:53:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:53:40,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:53:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:53:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:53:41,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:53:41,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16517737] [2024-06-21 16:53:41,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16517737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:53:41,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:53:41,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:53:41,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199019212] [2024-06-21 16:53:41,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:53:41,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:53:41,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:53:41,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:53:41,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:53:41,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:53:41,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 468 transitions, 4611 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:53:41,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:53:41,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:53:41,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:53:43,611 INFO L124 PetriNetUnfolderBase]: 3675/5910 cut-off events. [2024-06-21 16:53:43,611 INFO L125 PetriNetUnfolderBase]: For 1634776/1634776 co-relation queries the response was YES. [2024-06-21 16:53:43,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63024 conditions, 5910 events. 3675/5910 cut-off events. For 1634776/1634776 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 36781 event pairs, 734 based on Foata normal form. 1/5898 useless extension candidates. Maximal degree in co-relation 62839. Up to 5646 conditions per place. [2024-06-21 16:53:43,708 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 451 selfloop transitions, 25 changer transitions 0/486 dead transitions. [2024-06-21 16:53:43,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 486 transitions, 5607 flow [2024-06-21 16:53:43,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:53:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:53:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-21 16:53:43,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-21 16:53:43,710 INFO L175 Difference]: Start difference. First operand has 392 places, 468 transitions, 4611 flow. Second operand 9 states and 155 transitions. [2024-06-21 16:53:43,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 486 transitions, 5607 flow [2024-06-21 16:53:50,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 486 transitions, 5505 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-21 16:53:50,749 INFO L231 Difference]: Finished difference. Result has 393 places, 468 transitions, 4565 flow [2024-06-21 16:53:50,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4509, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4565, PETRI_PLACES=393, PETRI_TRANSITIONS=468} [2024-06-21 16:53:50,749 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 350 predicate places. [2024-06-21 16:53:50,749 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 468 transitions, 4565 flow [2024-06-21 16:53:50,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:53:50,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:53:50,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:53:50,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 16:53:50,750 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:53:50,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:53:50,750 INFO L85 PathProgramCache]: Analyzing trace with hash 790578711, now seen corresponding path program 4 times [2024-06-21 16:53:50,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:53:50,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546143885] [2024-06-21 16:53:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:53:50,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:53:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:53:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:53:51,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:53:51,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546143885] [2024-06-21 16:53:51,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546143885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:53:51,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:53:51,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:53:51,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904374779] [2024-06-21 16:53:51,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:53:51,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:53:51,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:53:51,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:53:51,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:53:51,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:53:51,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 468 transitions, 4565 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 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) [2024-06-21 16:53:51,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:53:51,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:53:51,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:53:53,260 INFO L124 PetriNetUnfolderBase]: 3602/5841 cut-off events. [2024-06-21 16:53:53,260 INFO L125 PetriNetUnfolderBase]: For 1670833/1670833 co-relation queries the response was YES. [2024-06-21 16:53:53,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62882 conditions, 5841 events. 3602/5841 cut-off events. For 1670833/1670833 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 36799 event pairs, 713 based on Foata normal form. 2/5830 useless extension candidates. Maximal degree in co-relation 62696. Up to 5419 conditions per place. [2024-06-21 16:53:53,360 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 413 selfloop transitions, 31 changer transitions 0/486 dead transitions. [2024-06-21 16:53:53,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 486 transitions, 5563 flow [2024-06-21 16:53:53,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:53:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:53:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-21 16:53:53,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 16:53:53,361 INFO L175 Difference]: Start difference. First operand has 393 places, 468 transitions, 4565 flow. Second operand 9 states and 162 transitions. [2024-06-21 16:53:53,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 486 transitions, 5563 flow [2024-06-21 16:53:59,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 486 transitions, 5485 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 16:53:59,626 INFO L231 Difference]: Finished difference. Result has 394 places, 470 transitions, 4630 flow [2024-06-21 16:53:59,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4487, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4630, PETRI_PLACES=394, PETRI_TRANSITIONS=470} [2024-06-21 16:53:59,627 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 351 predicate places. [2024-06-21 16:53:59,627 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 470 transitions, 4630 flow [2024-06-21 16:53:59,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 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) [2024-06-21 16:53:59,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:53:59,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:53:59,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 16:53:59,627 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:53:59,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:53:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash 790578835, now seen corresponding path program 4 times [2024-06-21 16:53:59,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:53:59,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411827804] [2024-06-21 16:53:59,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:53:59,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:53:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:54:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:54:00,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:54:00,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411827804] [2024-06-21 16:54:00,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411827804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:54:00,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:54:00,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:54:00,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175359582] [2024-06-21 16:54:00,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:54:00,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:54:00,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:54:00,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:54:00,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:54:00,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:54:00,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 470 transitions, 4630 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:54:00,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:54:00,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:54:00,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:54:02,136 INFO L124 PetriNetUnfolderBase]: 3723/5980 cut-off events. [2024-06-21 16:54:02,137 INFO L125 PetriNetUnfolderBase]: For 1701510/1701510 co-relation queries the response was YES. [2024-06-21 16:54:02,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64582 conditions, 5980 events. 3723/5980 cut-off events. For 1701510/1701510 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 37233 event pairs, 744 based on Foata normal form. 1/5966 useless extension candidates. Maximal degree in co-relation 64395. Up to 5672 conditions per place. [2024-06-21 16:54:02,233 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 425 selfloop transitions, 57 changer transitions 0/492 dead transitions. [2024-06-21 16:54:02,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 492 transitions, 6108 flow [2024-06-21 16:54:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:54:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:54:02,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-21 16:54:02,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-21 16:54:02,234 INFO L175 Difference]: Start difference. First operand has 394 places, 470 transitions, 4630 flow. Second operand 9 states and 160 transitions. [2024-06-21 16:54:02,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 492 transitions, 6108 flow [2024-06-21 16:54:09,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 492 transitions, 5981 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-21 16:54:09,826 INFO L231 Difference]: Finished difference. Result has 396 places, 476 transitions, 4825 flow [2024-06-21 16:54:09,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4503, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4825, PETRI_PLACES=396, PETRI_TRANSITIONS=476} [2024-06-21 16:54:09,827 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 353 predicate places. [2024-06-21 16:54:09,827 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 476 transitions, 4825 flow [2024-06-21 16:54:09,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:54:09,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:54:09,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:54:09,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 16:54:09,827 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:54:09,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:54:09,828 INFO L85 PathProgramCache]: Analyzing trace with hash 790763161, now seen corresponding path program 2 times [2024-06-21 16:54:09,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:54:09,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578655579] [2024-06-21 16:54:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:54:09,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:54:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:54:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:54:10,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:54:10,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578655579] [2024-06-21 16:54:10,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578655579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:54:10,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:54:10,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:54:10,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367275099] [2024-06-21 16:54:10,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:54:10,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:54:10,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:54:10,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:54:10,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:54:10,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:54:10,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 476 transitions, 4825 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:54:10,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:54:10,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:54:10,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:54:12,290 INFO L124 PetriNetUnfolderBase]: 3730/5989 cut-off events. [2024-06-21 16:54:12,290 INFO L125 PetriNetUnfolderBase]: For 1760014/1760014 co-relation queries the response was YES. [2024-06-21 16:54:12,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65537 conditions, 5989 events. 3730/5989 cut-off events. For 1760014/1760014 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 37312 event pairs, 739 based on Foata normal form. 2/5978 useless extension candidates. Maximal degree in co-relation 65349. Up to 5608 conditions per place. [2024-06-21 16:54:12,398 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 426 selfloop transitions, 69 changer transitions 0/505 dead transitions. [2024-06-21 16:54:12,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 505 transitions, 6695 flow [2024-06-21 16:54:12,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:54:12,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:54:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-21 16:54:12,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-21 16:54:12,399 INFO L175 Difference]: Start difference. First operand has 396 places, 476 transitions, 4825 flow. Second operand 9 states and 165 transitions. [2024-06-21 16:54:12,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 505 transitions, 6695 flow [2024-06-21 16:54:19,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 505 transitions, 6515 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-21 16:54:19,900 INFO L231 Difference]: Finished difference. Result has 400 places, 485 transitions, 5059 flow [2024-06-21 16:54:19,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4645, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5059, PETRI_PLACES=400, PETRI_TRANSITIONS=485} [2024-06-21 16:54:19,901 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 357 predicate places. [2024-06-21 16:54:19,901 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 485 transitions, 5059 flow [2024-06-21 16:54:19,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:54:19,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:54:19,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:54:19,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 16:54:19,902 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:54:19,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:54:19,902 INFO L85 PathProgramCache]: Analyzing trace with hash 790583485, now seen corresponding path program 5 times [2024-06-21 16:54:19,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:54:19,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057628478] [2024-06-21 16:54:19,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:54:19,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:54:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:54:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:54:20,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:54:20,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057628478] [2024-06-21 16:54:20,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057628478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:54:20,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:54:20,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:54:20,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756166875] [2024-06-21 16:54:20,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:54:20,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:54:20,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:54:20,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:54:20,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:54:20,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:54:20,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 485 transitions, 5059 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:54:20,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:54:20,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:54:20,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:54:22,221 INFO L124 PetriNetUnfolderBase]: 3730/5993 cut-off events. [2024-06-21 16:54:22,221 INFO L125 PetriNetUnfolderBase]: For 1774159/1774159 co-relation queries the response was YES. [2024-06-21 16:54:22,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66040 conditions, 5993 events. 3730/5993 cut-off events. For 1774159/1774159 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 37383 event pairs, 738 based on Foata normal form. 1/5981 useless extension candidates. Maximal degree in co-relation 65850. Up to 5689 conditions per place. [2024-06-21 16:54:22,322 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 441 selfloop transitions, 52 changer transitions 0/503 dead transitions. [2024-06-21 16:54:22,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 503 transitions, 6153 flow [2024-06-21 16:54:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:54:22,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:54:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-21 16:54:22,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-21 16:54:22,323 INFO L175 Difference]: Start difference. First operand has 400 places, 485 transitions, 5059 flow. Second operand 9 states and 158 transitions. [2024-06-21 16:54:22,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 503 transitions, 6153 flow [2024-06-21 16:54:28,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 503 transitions, 6007 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-21 16:54:28,968 INFO L231 Difference]: Finished difference. Result has 405 places, 488 transitions, 5101 flow [2024-06-21 16:54:28,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4913, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5101, PETRI_PLACES=405, PETRI_TRANSITIONS=488} [2024-06-21 16:54:28,972 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 362 predicate places. [2024-06-21 16:54:28,973 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 488 transitions, 5101 flow [2024-06-21 16:54:28,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:54:28,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:54:28,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:54:28,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 16:54:28,973 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:54:28,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:54:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1052049365, now seen corresponding path program 3 times [2024-06-21 16:54:28,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:54:28,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197269543] [2024-06-21 16:54:28,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:54:28,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:54:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:54:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:54:29,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:54:29,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197269543] [2024-06-21 16:54:29,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197269543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:54:29,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:54:29,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:54:29,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504107887] [2024-06-21 16:54:29,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:54:29,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:54:29,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:54:29,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:54:29,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:54:29,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:54:29,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 488 transitions, 5101 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:54:29,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:54:29,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:54:29,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:54:31,218 INFO L124 PetriNetUnfolderBase]: 3745/6012 cut-off events. [2024-06-21 16:54:31,218 INFO L125 PetriNetUnfolderBase]: For 1805901/1805901 co-relation queries the response was YES. [2024-06-21 16:54:31,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66269 conditions, 6012 events. 3745/6012 cut-off events. For 1805901/1805901 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 37500 event pairs, 739 based on Foata normal form. 2/6001 useless extension candidates. Maximal degree in co-relation 66077. Up to 5625 conditions per place. [2024-06-21 16:54:31,317 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 432 selfloop transitions, 70 changer transitions 0/512 dead transitions. [2024-06-21 16:54:31,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 512 transitions, 6803 flow [2024-06-21 16:54:31,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:54:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:54:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-21 16:54:31,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-21 16:54:31,319 INFO L175 Difference]: Start difference. First operand has 405 places, 488 transitions, 5101 flow. Second operand 9 states and 167 transitions. [2024-06-21 16:54:31,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 512 transitions, 6803 flow [2024-06-21 16:54:37,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 512 transitions, 6643 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-21 16:54:37,216 INFO L231 Difference]: Finished difference. Result has 407 places, 491 transitions, 5157 flow [2024-06-21 16:54:37,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4941, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5157, PETRI_PLACES=407, PETRI_TRANSITIONS=491} [2024-06-21 16:54:37,220 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 364 predicate places. [2024-06-21 16:54:37,220 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 491 transitions, 5157 flow [2024-06-21 16:54:37,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:54:37,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:54:37,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:54:37,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 16:54:37,221 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:54:37,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:54:37,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1051876385, now seen corresponding path program 4 times [2024-06-21 16:54:37,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:54:37,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227258301] [2024-06-21 16:54:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:54:37,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:54:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:54:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:54:37,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:54:37,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227258301] [2024-06-21 16:54:37,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227258301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:54:37,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:54:37,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:54:37,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82682382] [2024-06-21 16:54:37,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:54:37,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:54:37,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:54:37,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:54:37,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:54:38,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:54:38,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 491 transitions, 5157 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:54:38,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:54:38,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:54:38,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:54:39,453 INFO L124 PetriNetUnfolderBase]: 3739/6006 cut-off events. [2024-06-21 16:54:39,453 INFO L125 PetriNetUnfolderBase]: For 1808211/1808211 co-relation queries the response was YES. [2024-06-21 16:54:39,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66092 conditions, 6006 events. 3739/6006 cut-off events. For 1808211/1808211 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 37428 event pairs, 736 based on Foata normal form. 2/5995 useless extension candidates. Maximal degree in co-relation 65899. Up to 5620 conditions per place. [2024-06-21 16:54:39,556 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 432 selfloop transitions, 69 changer transitions 0/511 dead transitions. [2024-06-21 16:54:39,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 511 transitions, 6501 flow [2024-06-21 16:54:39,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:54:39,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:54:39,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-21 16:54:39,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-21 16:54:39,557 INFO L175 Difference]: Start difference. First operand has 407 places, 491 transitions, 5157 flow. Second operand 9 states and 167 transitions. [2024-06-21 16:54:39,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 511 transitions, 6501 flow [2024-06-21 16:54:45,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 511 transitions, 6277 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-21 16:54:45,442 INFO L231 Difference]: Finished difference. Result has 410 places, 491 transitions, 5077 flow [2024-06-21 16:54:45,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4933, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5077, PETRI_PLACES=410, PETRI_TRANSITIONS=491} [2024-06-21 16:54:45,442 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 367 predicate places. [2024-06-21 16:54:45,443 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 491 transitions, 5077 flow [2024-06-21 16:54:45,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:54:45,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:54:45,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:54:45,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 16:54:45,443 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:54:45,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:54:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash 790756465, now seen corresponding path program 6 times [2024-06-21 16:54:45,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:54:45,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53698502] [2024-06-21 16:54:45,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:54:45,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:54:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:54:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:54:46,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:54:46,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53698502] [2024-06-21 16:54:46,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53698502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:54:46,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:54:46,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:54:46,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33805736] [2024-06-21 16:54:46,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:54:46,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:54:46,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:54:46,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:54:46,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:54:46,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:54:46,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 491 transitions, 5077 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:54:46,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:54:46,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:54:46,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:54:47,774 INFO L124 PetriNetUnfolderBase]: 3736/6002 cut-off events. [2024-06-21 16:54:47,774 INFO L125 PetriNetUnfolderBase]: For 1808571/1808571 co-relation queries the response was YES. [2024-06-21 16:54:47,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65874 conditions, 6002 events. 3736/6002 cut-off events. For 1808571/1808571 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 37417 event pairs, 737 based on Foata normal form. 1/5988 useless extension candidates. Maximal degree in co-relation 65680. Up to 5696 conditions per place. [2024-06-21 16:54:47,881 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 443 selfloop transitions, 53 changer transitions 0/506 dead transitions. [2024-06-21 16:54:47,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 506 transitions, 6105 flow [2024-06-21 16:54:47,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:54:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:54:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-21 16:54:47,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-21 16:54:47,882 INFO L175 Difference]: Start difference. First operand has 410 places, 491 transitions, 5077 flow. Second operand 9 states and 157 transitions. [2024-06-21 16:54:47,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 506 transitions, 6105 flow [2024-06-21 16:54:54,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 506 transitions, 5871 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-21 16:54:54,847 INFO L231 Difference]: Finished difference. Result has 410 places, 491 transitions, 4955 flow [2024-06-21 16:54:54,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4843, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4955, PETRI_PLACES=410, PETRI_TRANSITIONS=491} [2024-06-21 16:54:54,848 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 367 predicate places. [2024-06-21 16:54:54,848 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 491 transitions, 4955 flow [2024-06-21 16:54:54,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:54:54,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:54:54,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:54:54,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 16:54:54,849 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:54:54,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:54:54,849 INFO L85 PathProgramCache]: Analyzing trace with hash -32289513, now seen corresponding path program 5 times [2024-06-21 16:54:54,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:54:54,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460833251] [2024-06-21 16:54:54,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:54:54,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:54:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:54:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:54:55,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:54:55,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460833251] [2024-06-21 16:54:55,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460833251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:54:55,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:54:55,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:54:55,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433496022] [2024-06-21 16:54:55,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:54:55,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:54:55,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:54:55,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:54:55,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:54:55,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-21 16:54:55,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 491 transitions, 4955 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 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) [2024-06-21 16:54:55,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:54:55,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-21 16:54:55,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:54:57,372 INFO L124 PetriNetUnfolderBase]: 3648/5910 cut-off events. [2024-06-21 16:54:57,372 INFO L125 PetriNetUnfolderBase]: For 1823833/1823833 co-relation queries the response was YES. [2024-06-21 16:54:57,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65089 conditions, 5910 events. 3648/5910 cut-off events. For 1823833/1823833 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 37218 event pairs, 714 based on Foata normal form. 2/5897 useless extension candidates. Maximal degree in co-relation 64894. Up to 5505 conditions per place. [2024-06-21 16:54:57,471 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 442 selfloop transitions, 19 changer transitions 0/506 dead transitions. [2024-06-21 16:54:57,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 506 transitions, 5987 flow [2024-06-21 16:54:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:54:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:54:57,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-21 16:54:57,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-21 16:54:57,472 INFO L175 Difference]: Start difference. First operand has 410 places, 491 transitions, 4955 flow. Second operand 9 states and 155 transitions. [2024-06-21 16:54:57,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 506 transitions, 5987 flow [2024-06-21 16:55:04,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 506 transitions, 5863 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 16:55:04,272 INFO L231 Difference]: Finished difference. Result has 411 places, 493 transitions, 4958 flow [2024-06-21 16:55:04,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4831, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4958, PETRI_PLACES=411, PETRI_TRANSITIONS=493} [2024-06-21 16:55:04,273 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 368 predicate places. [2024-06-21 16:55:04,273 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 493 transitions, 4958 flow [2024-06-21 16:55:04,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 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) [2024-06-21 16:55:04,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:55:04,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:55:04,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 16:55:04,273 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:55:04,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:55:04,274 INFO L85 PathProgramCache]: Analyzing trace with hash -973343765, now seen corresponding path program 7 times [2024-06-21 16:55:04,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:55:04,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431476857] [2024-06-21 16:55:04,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:55:04,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:55:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:55:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:55:05,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:55:05,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431476857] [2024-06-21 16:55:05,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431476857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:55:05,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:55:05,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:55:05,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024938893] [2024-06-21 16:55:05,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:55:05,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:55:05,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:55:05,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:55:05,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:55:05,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:55:05,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 493 transitions, 4958 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:55:05,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:55:05,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:55:05,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:55:06,914 INFO L124 PetriNetUnfolderBase]: 3736/6000 cut-off events. [2024-06-21 16:55:06,914 INFO L125 PetriNetUnfolderBase]: For 1831462/1831462 co-relation queries the response was YES. [2024-06-21 16:55:06,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65814 conditions, 6000 events. 3736/6000 cut-off events. For 1831462/1831462 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 37330 event pairs, 736 based on Foata normal form. 1/5986 useless extension candidates. Maximal degree in co-relation 65618. Up to 5735 conditions per place. [2024-06-21 16:55:07,008 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 465 selfloop transitions, 33 changer transitions 0/508 dead transitions. [2024-06-21 16:55:07,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 508 transitions, 6090 flow [2024-06-21 16:55:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:55:07,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:55:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-21 16:55:07,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-21 16:55:07,009 INFO L175 Difference]: Start difference. First operand has 411 places, 493 transitions, 4958 flow. Second operand 9 states and 150 transitions. [2024-06-21 16:55:07,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 508 transitions, 6090 flow [2024-06-21 16:55:14,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 508 transitions, 5979 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-21 16:55:14,170 INFO L231 Difference]: Finished difference. Result has 413 places, 496 transitions, 5033 flow [2024-06-21 16:55:14,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4847, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5033, PETRI_PLACES=413, PETRI_TRANSITIONS=496} [2024-06-21 16:55:14,171 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 370 predicate places. [2024-06-21 16:55:14,171 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 496 transitions, 5033 flow [2024-06-21 16:55:14,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:55:14,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:55:14,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:55:14,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 16:55:14,171 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:55:14,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:55:14,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1217515519, now seen corresponding path program 5 times [2024-06-21 16:55:14,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:55:14,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864792031] [2024-06-21 16:55:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:55:14,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:55:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:55:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:55:14,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:55:14,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864792031] [2024-06-21 16:55:14,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864792031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:55:14,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:55:14,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:55:14,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892957713] [2024-06-21 16:55:14,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:55:14,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:55:14,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:55:14,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:55:14,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:55:15,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:55:15,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 496 transitions, 5033 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:55:15,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:55:15,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:55:15,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:55:16,733 INFO L124 PetriNetUnfolderBase]: 3746/6016 cut-off events. [2024-06-21 16:55:16,733 INFO L125 PetriNetUnfolderBase]: For 1868319/1868319 co-relation queries the response was YES. [2024-06-21 16:55:16,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66478 conditions, 6016 events. 3746/6016 cut-off events. For 1868319/1868319 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 37486 event pairs, 736 based on Foata normal form. 2/6003 useless extension candidates. Maximal degree in co-relation 66281. Up to 5697 conditions per place. [2024-06-21 16:55:16,833 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 460 selfloop transitions, 45 changer transitions 0/515 dead transitions. [2024-06-21 16:55:16,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 515 transitions, 6473 flow [2024-06-21 16:55:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:55:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:55:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-21 16:55:16,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-21 16:55:16,834 INFO L175 Difference]: Start difference. First operand has 413 places, 496 transitions, 5033 flow. Second operand 9 states and 157 transitions. [2024-06-21 16:55:16,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 515 transitions, 6473 flow [2024-06-21 16:55:24,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 515 transitions, 6309 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-21 16:55:24,715 INFO L231 Difference]: Finished difference. Result has 415 places, 499 transitions, 5057 flow [2024-06-21 16:55:24,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4869, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5057, PETRI_PLACES=415, PETRI_TRANSITIONS=499} [2024-06-21 16:55:24,716 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 372 predicate places. [2024-06-21 16:55:24,716 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 499 transitions, 5057 flow [2024-06-21 16:55:24,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:55:24,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:55:24,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:55:24,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 16:55:24,717 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:55:24,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:55:24,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1217510683, now seen corresponding path program 8 times [2024-06-21 16:55:24,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:55:24,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181275927] [2024-06-21 16:55:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:55:24,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:55:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:55:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:55:25,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:55:25,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181275927] [2024-06-21 16:55:25,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181275927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:55:25,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:55:25,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:55:25,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934191006] [2024-06-21 16:55:25,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:55:25,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:55:25,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:55:25,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:55:25,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:55:25,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:55:25,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 499 transitions, 5057 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:55:25,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:55:25,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:55:25,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:55:27,196 INFO L124 PetriNetUnfolderBase]: 3746/6018 cut-off events. [2024-06-21 16:55:27,197 INFO L125 PetriNetUnfolderBase]: For 1880255/1880255 co-relation queries the response was YES. [2024-06-21 16:55:27,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66693 conditions, 6018 events. 3746/6018 cut-off events. For 1880255/1880255 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 37537 event pairs, 736 based on Foata normal form. 1/6004 useless extension candidates. Maximal degree in co-relation 66495. Up to 5739 conditions per place. [2024-06-21 16:55:27,296 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 467 selfloop transitions, 41 changer transitions 0/518 dead transitions. [2024-06-21 16:55:27,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 518 transitions, 6629 flow [2024-06-21 16:55:27,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:55:27,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:55:27,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-21 16:55:27,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021164021164021 [2024-06-21 16:55:27,297 INFO L175 Difference]: Start difference. First operand has 415 places, 499 transitions, 5057 flow. Second operand 9 states and 152 transitions. [2024-06-21 16:55:27,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 518 transitions, 6629 flow [2024-06-21 16:55:33,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 518 transitions, 6432 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-21 16:55:33,434 INFO L231 Difference]: Finished difference. Result has 417 places, 505 transitions, 5182 flow [2024-06-21 16:55:33,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4860, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5182, PETRI_PLACES=417, PETRI_TRANSITIONS=505} [2024-06-21 16:55:33,434 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 374 predicate places. [2024-06-21 16:55:33,435 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 505 transitions, 5182 flow [2024-06-21 16:55:33,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:55:33,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:55:33,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:55:33,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 16:55:33,435 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:55:33,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:55:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash -973164089, now seen corresponding path program 6 times [2024-06-21 16:55:33,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:55:33,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734886501] [2024-06-21 16:55:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:55:33,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:55:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:55:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:55:34,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:55:34,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734886501] [2024-06-21 16:55:34,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734886501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:55:34,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:55:34,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:55:34,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597537122] [2024-06-21 16:55:34,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:55:34,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:55:34,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:55:34,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:55:34,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:55:34,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:55:34,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 505 transitions, 5182 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:55:34,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:55:34,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:55:34,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:55:36,153 INFO L124 PetriNetUnfolderBase]: 3801/6101 cut-off events. [2024-06-21 16:55:36,153 INFO L125 PetriNetUnfolderBase]: For 1958208/1958208 co-relation queries the response was YES. [2024-06-21 16:55:36,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68435 conditions, 6101 events. 3801/6101 cut-off events. For 1958208/1958208 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 38059 event pairs, 743 based on Foata normal form. 2/6088 useless extension candidates. Maximal degree in co-relation 68236. Up to 5765 conditions per place. [2024-06-21 16:55:36,249 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 469 selfloop transitions, 49 changer transitions 0/528 dead transitions. [2024-06-21 16:55:36,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 528 transitions, 7018 flow [2024-06-21 16:55:36,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:55:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:55:36,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-21 16:55:36,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-21 16:55:36,251 INFO L175 Difference]: Start difference. First operand has 417 places, 505 transitions, 5182 flow. Second operand 9 states and 159 transitions. [2024-06-21 16:55:36,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 528 transitions, 7018 flow [2024-06-21 16:55:43,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 528 transitions, 6834 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-21 16:55:43,156 INFO L231 Difference]: Finished difference. Result has 421 places, 511 transitions, 5258 flow [2024-06-21 16:55:43,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4998, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5258, PETRI_PLACES=421, PETRI_TRANSITIONS=511} [2024-06-21 16:55:43,156 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 378 predicate places. [2024-06-21 16:55:43,157 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 511 transitions, 5258 flow [2024-06-21 16:55:43,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:55:43,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:55:43,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:55:43,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 16:55:43,157 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:55:43,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:55:43,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1217688313, now seen corresponding path program 9 times [2024-06-21 16:55:43,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:55:43,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651168893] [2024-06-21 16:55:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:55:43,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:55:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:55:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:55:44,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:55:44,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651168893] [2024-06-21 16:55:44,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651168893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:55:44,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:55:44,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:55:44,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896342938] [2024-06-21 16:55:44,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:55:44,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:55:44,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:55:44,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:55:44,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:55:44,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:55:44,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 511 transitions, 5258 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:55:44,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:55:44,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:55:44,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:55:45,995 INFO L124 PetriNetUnfolderBase]: 3806/6107 cut-off events. [2024-06-21 16:55:45,995 INFO L125 PetriNetUnfolderBase]: For 1969849/1969849 co-relation queries the response was YES. [2024-06-21 16:55:46,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68657 conditions, 6107 events. 3806/6107 cut-off events. For 1969849/1969849 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 38135 event pairs, 742 based on Foata normal form. 1/6093 useless extension candidates. Maximal degree in co-relation 68456. Up to 5837 conditions per place. [2024-06-21 16:55:46,101 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 484 selfloop transitions, 32 changer transitions 0/526 dead transitions. [2024-06-21 16:55:46,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 526 transitions, 6398 flow [2024-06-21 16:55:46,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:55:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:55:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-21 16:55:46,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994708994708995 [2024-06-21 16:55:46,102 INFO L175 Difference]: Start difference. First operand has 421 places, 511 transitions, 5258 flow. Second operand 9 states and 151 transitions. [2024-06-21 16:55:46,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 526 transitions, 6398 flow [2024-06-21 16:55:52,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 526 transitions, 6257 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-21 16:55:52,484 INFO L231 Difference]: Finished difference. Result has 425 places, 514 transitions, 5273 flow [2024-06-21 16:55:52,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5117, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5273, PETRI_PLACES=425, PETRI_TRANSITIONS=514} [2024-06-21 16:55:52,484 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 382 predicate places. [2024-06-21 16:55:52,484 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 514 transitions, 5273 flow [2024-06-21 16:55:52,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:55:52,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:55:52,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:55:52,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 16:55:52,485 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:55:52,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:55:52,485 INFO L85 PathProgramCache]: Analyzing trace with hash -973170599, now seen corresponding path program 7 times [2024-06-21 16:55:52,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:55:52,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662497302] [2024-06-21 16:55:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:55:52,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:55:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:55:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:55:53,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:55:53,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662497302] [2024-06-21 16:55:53,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662497302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:55:53,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:55:53,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:55:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237111466] [2024-06-21 16:55:53,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:55:53,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:55:53,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:55:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:55:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:55:53,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:55:53,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 514 transitions, 5273 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:55:53,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:55:53,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:55:53,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:55:55,412 INFO L124 PetriNetUnfolderBase]: 3800/6097 cut-off events. [2024-06-21 16:55:55,412 INFO L125 PetriNetUnfolderBase]: For 1980915/1980915 co-relation queries the response was YES. [2024-06-21 16:55:55,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68229 conditions, 6097 events. 3800/6097 cut-off events. For 1980915/1980915 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 38018 event pairs, 741 based on Foata normal form. 2/6084 useless extension candidates. Maximal degree in co-relation 68027. Up to 5767 conditions per place. [2024-06-21 16:55:55,524 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 473 selfloop transitions, 48 changer transitions 0/531 dead transitions. [2024-06-21 16:55:55,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 531 transitions, 6665 flow [2024-06-21 16:55:55,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:55:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:55:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-21 16:55:55,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-21 16:55:55,525 INFO L175 Difference]: Start difference. First operand has 425 places, 514 transitions, 5273 flow. Second operand 9 states and 160 transitions. [2024-06-21 16:55:55,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 531 transitions, 6665 flow [2024-06-21 16:56:04,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 531 transitions, 6483 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-21 16:56:04,783 INFO L231 Difference]: Finished difference. Result has 427 places, 514 transitions, 5193 flow [2024-06-21 16:56:04,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5091, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5193, PETRI_PLACES=427, PETRI_TRANSITIONS=514} [2024-06-21 16:56:04,796 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 384 predicate places. [2024-06-21 16:56:04,797 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 514 transitions, 5193 flow [2024-06-21 16:56:04,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:56:04,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:56:04,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:56:04,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 16:56:04,797 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:56:04,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:56:04,797 INFO L85 PathProgramCache]: Analyzing trace with hash -736988729, now seen corresponding path program 8 times [2024-06-21 16:56:04,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:56:04,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081404415] [2024-06-21 16:56:04,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:56:04,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:56:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:56:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:56:05,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:56:05,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081404415] [2024-06-21 16:56:05,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081404415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:56:05,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:56:05,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:56:05,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753237200] [2024-06-21 16:56:05,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:56:05,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:56:05,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:56:05,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:56:05,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:56:05,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:56:05,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 514 transitions, 5193 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:56:05,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:56:05,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:56:05,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:56:07,505 INFO L124 PetriNetUnfolderBase]: 3781/6069 cut-off events. [2024-06-21 16:56:07,505 INFO L125 PetriNetUnfolderBase]: For 1989907/1989907 co-relation queries the response was YES. [2024-06-21 16:56:07,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67816 conditions, 6069 events. 3781/6069 cut-off events. For 1989907/1989907 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 37850 event pairs, 738 based on Foata normal form. 2/6056 useless extension candidates. Maximal degree in co-relation 67613. Up to 5805 conditions per place. [2024-06-21 16:56:07,697 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 499 selfloop transitions, 22 changer transitions 0/531 dead transitions. [2024-06-21 16:56:07,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 531 transitions, 6358 flow [2024-06-21 16:56:07,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:56:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:56:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-21 16:56:07,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941798941798942 [2024-06-21 16:56:07,698 INFO L175 Difference]: Start difference. First operand has 427 places, 514 transitions, 5193 flow. Second operand 9 states and 149 transitions. [2024-06-21 16:56:07,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 531 transitions, 6358 flow [2024-06-21 16:56:17,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 531 transitions, 6270 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-21 16:56:17,077 INFO L231 Difference]: Finished difference. Result has 429 places, 517 transitions, 5248 flow [2024-06-21 16:56:17,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5108, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5248, PETRI_PLACES=429, PETRI_TRANSITIONS=517} [2024-06-21 16:56:17,077 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 386 predicate places. [2024-06-21 16:56:17,077 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 517 transitions, 5248 flow [2024-06-21 16:56:17,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:56:17,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:56:17,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:56:17,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 16:56:17,078 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:56:17,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:56:17,078 INFO L85 PathProgramCache]: Analyzing trace with hash -745262939, now seen corresponding path program 9 times [2024-06-21 16:56:17,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:56:17,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44005690] [2024-06-21 16:56:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:56:17,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:56:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:56:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:56:17,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:56:17,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44005690] [2024-06-21 16:56:17,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44005690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:56:17,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:56:17,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:56:17,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292306655] [2024-06-21 16:56:17,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:56:17,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:56:17,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:56:17,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:56:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:56:17,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:56:17,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 517 transitions, 5248 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:56:17,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:56:17,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:56:17,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:56:19,773 INFO L124 PetriNetUnfolderBase]: 3791/6083 cut-off events. [2024-06-21 16:56:19,774 INFO L125 PetriNetUnfolderBase]: For 2015461/2015461 co-relation queries the response was YES. [2024-06-21 16:56:19,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68098 conditions, 6083 events. 3791/6083 cut-off events. For 2015461/2015461 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 37962 event pairs, 740 based on Foata normal form. 2/6070 useless extension candidates. Maximal degree in co-relation 67894. Up to 5790 conditions per place. [2024-06-21 16:56:19,876 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 492 selfloop transitions, 34 changer transitions 0/536 dead transitions. [2024-06-21 16:56:19,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 536 transitions, 6740 flow [2024-06-21 16:56:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:56:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:56:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-21 16:56:19,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-21 16:56:19,878 INFO L175 Difference]: Start difference. First operand has 429 places, 517 transitions, 5248 flow. Second operand 9 states and 155 transitions. [2024-06-21 16:56:19,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 536 transitions, 6740 flow [2024-06-21 16:56:30,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 536 transitions, 6634 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-21 16:56:30,271 INFO L231 Difference]: Finished difference. Result has 431 places, 520 transitions, 5306 flow [2024-06-21 16:56:30,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5142, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5306, PETRI_PLACES=431, PETRI_TRANSITIONS=520} [2024-06-21 16:56:30,272 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 388 predicate places. [2024-06-21 16:56:30,272 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 520 transitions, 5306 flow [2024-06-21 16:56:30,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:56:30,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:56:30,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:56:30,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 16:56:30,273 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:56:30,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:56:30,273 INFO L85 PathProgramCache]: Analyzing trace with hash -745269635, now seen corresponding path program 10 times [2024-06-21 16:56:30,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:56:30,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959754839] [2024-06-21 16:56:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:56:30,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:56:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:56:31,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:56:31,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:56:31,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959754839] [2024-06-21 16:56:31,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959754839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:56:31,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:56:31,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:56:31,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123486900] [2024-06-21 16:56:31,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:56:31,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:56:31,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:56:31,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:56:31,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:56:31,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:56:31,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 520 transitions, 5306 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:56:31,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:56:31,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:56:31,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:56:33,212 INFO L124 PetriNetUnfolderBase]: 3796/6089 cut-off events. [2024-06-21 16:56:33,213 INFO L125 PetriNetUnfolderBase]: For 2014570/2014570 co-relation queries the response was YES. [2024-06-21 16:56:33,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68024 conditions, 6089 events. 3796/6089 cut-off events. For 2014570/2014570 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 37994 event pairs, 742 based on Foata normal form. 1/6075 useless extension candidates. Maximal degree in co-relation 67819. Up to 5835 conditions per place. [2024-06-21 16:56:33,312 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 502 selfloop transitions, 20 changer transitions 0/532 dead transitions. [2024-06-21 16:56:33,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 532 transitions, 6378 flow [2024-06-21 16:56:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:56:33,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:56:33,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-21 16:56:33,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 16:56:33,313 INFO L175 Difference]: Start difference. First operand has 431 places, 520 transitions, 5306 flow. Second operand 9 states and 147 transitions. [2024-06-21 16:56:33,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 532 transitions, 6378 flow [2024-06-21 16:56:43,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 532 transitions, 6130 flow, removed 71 selfloop flow, removed 8 redundant places. [2024-06-21 16:56:43,070 INFO L231 Difference]: Finished difference. Result has 432 places, 520 transitions, 5104 flow [2024-06-21 16:56:43,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5058, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5104, PETRI_PLACES=432, PETRI_TRANSITIONS=520} [2024-06-21 16:56:43,084 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 389 predicate places. [2024-06-21 16:56:43,085 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 520 transitions, 5104 flow [2024-06-21 16:56:43,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:56:43,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:56:43,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:56:43,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 16:56:43,085 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:56:43,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:56:43,085 INFO L85 PathProgramCache]: Analyzing trace with hash -745269449, now seen corresponding path program 10 times [2024-06-21 16:56:43,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:56:43,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194644520] [2024-06-21 16:56:43,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:56:43,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:56:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:56:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:56:43,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:56:43,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194644520] [2024-06-21 16:56:43,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194644520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:56:43,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:56:43,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:56:43,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155537625] [2024-06-21 16:56:43,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:56:43,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:56:43,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:56:43,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:56:43,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:56:44,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:56:44,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 520 transitions, 5104 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:56:44,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:56:44,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:56:44,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:56:45,830 INFO L124 PetriNetUnfolderBase]: 3790/6081 cut-off events. [2024-06-21 16:56:45,831 INFO L125 PetriNetUnfolderBase]: For 2016542/2016542 co-relation queries the response was YES. [2024-06-21 16:56:46,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67497 conditions, 6081 events. 3790/6081 cut-off events. For 2016542/2016542 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 37887 event pairs, 737 based on Foata normal form. 2/6068 useless extension candidates. Maximal degree in co-relation 67291. Up to 5787 conditions per place. [2024-06-21 16:56:46,055 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 490 selfloop transitions, 35 changer transitions 0/535 dead transitions. [2024-06-21 16:56:46,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 535 transitions, 6194 flow [2024-06-21 16:56:46,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:56:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:56:46,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-21 16:56:46,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-21 16:56:46,057 INFO L175 Difference]: Start difference. First operand has 432 places, 520 transitions, 5104 flow. Second operand 9 states and 153 transitions. [2024-06-21 16:56:46,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 535 transitions, 6194 flow [2024-06-21 16:56:58,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 535 transitions, 6066 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-21 16:56:58,163 INFO L231 Difference]: Finished difference. Result has 433 places, 520 transitions, 5052 flow [2024-06-21 16:56:58,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4976, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5052, PETRI_PLACES=433, PETRI_TRANSITIONS=520} [2024-06-21 16:56:58,163 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 390 predicate places. [2024-06-21 16:56:58,163 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 520 transitions, 5052 flow [2024-06-21 16:56:58,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:56:58,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:56:58,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:56:58,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 16:56:58,164 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:56:58,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:56:58,164 INFO L85 PathProgramCache]: Analyzing trace with hash -736680899, now seen corresponding path program 1 times [2024-06-21 16:56:58,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:56:58,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682731716] [2024-06-21 16:56:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:56:58,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:56:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:56:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:56:59,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:56:59,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682731716] [2024-06-21 16:56:59,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682731716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:56:59,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:56:59,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:56:59,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363318623] [2024-06-21 16:56:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:56:59,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:56:59,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:56:59,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:56:59,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:56:59,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:56:59,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 520 transitions, 5052 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 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) [2024-06-21 16:56:59,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:56:59,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:56:59,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:57:01,231 INFO L124 PetriNetUnfolderBase]: 3997/6309 cut-off events. [2024-06-21 16:57:01,232 INFO L125 PetriNetUnfolderBase]: For 2335932/2335932 co-relation queries the response was YES. [2024-06-21 16:57:01,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72762 conditions, 6309 events. 3997/6309 cut-off events. For 2335932/2335932 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 38322 event pairs, 807 based on Foata normal form. 2/6309 useless extension candidates. Maximal degree in co-relation 72555. Up to 6135 conditions per place. [2024-06-21 16:57:01,340 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 510 selfloop transitions, 21 changer transitions 0/535 dead transitions. [2024-06-21 16:57:01,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 535 transitions, 6222 flow [2024-06-21 16:57:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:57:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:57:01,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-21 16:57:01,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-21 16:57:01,341 INFO L175 Difference]: Start difference. First operand has 433 places, 520 transitions, 5052 flow. Second operand 9 states and 140 transitions. [2024-06-21 16:57:01,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 535 transitions, 6222 flow [2024-06-21 16:57:13,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 535 transitions, 6120 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 16:57:13,478 INFO L231 Difference]: Finished difference. Result has 433 places, 522 transitions, 5079 flow [2024-06-21 16:57:13,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4950, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5079, PETRI_PLACES=433, PETRI_TRANSITIONS=522} [2024-06-21 16:57:13,479 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 390 predicate places. [2024-06-21 16:57:13,479 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 522 transitions, 5079 flow [2024-06-21 16:57:13,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 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) [2024-06-21 16:57:13,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:57:13,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:57:13,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 16:57:13,479 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:57:13,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:57:13,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1245094177, now seen corresponding path program 1 times [2024-06-21 16:57:13,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:57:13,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658753079] [2024-06-21 16:57:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:57:13,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:57:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:57:14,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:57:14,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:57:14,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658753079] [2024-06-21 16:57:14,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658753079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:57:14,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:57:14,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:57:14,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658254958] [2024-06-21 16:57:14,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:57:14,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:57:14,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:57:14,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:57:14,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:57:14,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:57:14,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 522 transitions, 5079 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:57:14,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:57:14,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:57:14,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:57:16,967 INFO L124 PetriNetUnfolderBase]: 3917/6229 cut-off events. [2024-06-21 16:57:16,968 INFO L125 PetriNetUnfolderBase]: For 2353137/2353137 co-relation queries the response was YES. [2024-06-21 16:57:17,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72672 conditions, 6229 events. 3917/6229 cut-off events. For 2353137/2353137 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 38233 event pairs, 786 based on Foata normal form. 1/6228 useless extension candidates. Maximal degree in co-relation 72464. Up to 5870 conditions per place. [2024-06-21 16:57:17,069 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 492 selfloop transitions, 20 changer transitions 0/555 dead transitions. [2024-06-21 16:57:17,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 555 transitions, 6293 flow [2024-06-21 16:57:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:57:17,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:57:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-21 16:57:17,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-21 16:57:17,070 INFO L175 Difference]: Start difference. First operand has 433 places, 522 transitions, 5079 flow. Second operand 9 states and 165 transitions. [2024-06-21 16:57:17,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 555 transitions, 6293 flow [2024-06-21 16:57:31,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 555 transitions, 6180 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-21 16:57:31,574 INFO L231 Difference]: Finished difference. Result has 435 places, 525 transitions, 5132 flow [2024-06-21 16:57:31,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4966, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5132, PETRI_PLACES=435, PETRI_TRANSITIONS=525} [2024-06-21 16:57:31,575 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 392 predicate places. [2024-06-21 16:57:31,575 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 525 transitions, 5132 flow [2024-06-21 16:57:31,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:57:31,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:57:31,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:57:31,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 16:57:31,576 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:57:31,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:57:31,576 INFO L85 PathProgramCache]: Analyzing trace with hash -105169187, now seen corresponding path program 1 times [2024-06-21 16:57:31,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:57:31,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243770684] [2024-06-21 16:57:31,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:57:31,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:57:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:57:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:57:32,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:57:32,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243770684] [2024-06-21 16:57:32,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243770684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:57:32,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:57:32,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:57:32,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959147519] [2024-06-21 16:57:32,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:57:32,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:57:32,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:57:32,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:57:32,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:57:32,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:57:32,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 525 transitions, 5132 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:57:32,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:57:32,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:57:32,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:57:34,731 INFO L124 PetriNetUnfolderBase]: 4007/6321 cut-off events. [2024-06-21 16:57:34,731 INFO L125 PetriNetUnfolderBase]: For 2378814/2378814 co-relation queries the response was YES. [2024-06-21 16:57:34,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73656 conditions, 6321 events. 4007/6321 cut-off events. For 2378814/2378814 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 38410 event pairs, 809 based on Foata normal form. 1/6320 useless extension candidates. Maximal degree in co-relation 73447. Up to 6057 conditions per place. [2024-06-21 16:57:34,839 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 496 selfloop transitions, 59 changer transitions 0/559 dead transitions. [2024-06-21 16:57:34,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 559 transitions, 6822 flow [2024-06-21 16:57:34,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:57:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:57:34,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-21 16:57:34,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-21 16:57:34,840 INFO L175 Difference]: Start difference. First operand has 435 places, 525 transitions, 5132 flow. Second operand 9 states and 163 transitions. [2024-06-21 16:57:34,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 559 transitions, 6822 flow [2024-06-21 16:57:45,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 559 transitions, 6678 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-21 16:57:45,712 INFO L231 Difference]: Finished difference. Result has 437 places, 531 transitions, 5310 flow [2024-06-21 16:57:45,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4988, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5310, PETRI_PLACES=437, PETRI_TRANSITIONS=531} [2024-06-21 16:57:45,712 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 394 predicate places. [2024-06-21 16:57:45,712 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 531 transitions, 5310 flow [2024-06-21 16:57:45,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:57:45,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:57:45,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:57:45,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 16:57:45,713 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:57:45,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:57:45,713 INFO L85 PathProgramCache]: Analyzing trace with hash -215991893, now seen corresponding path program 2 times [2024-06-21 16:57:45,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:57:45,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452639486] [2024-06-21 16:57:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:57:45,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:57:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:57:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:57:46,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:57:46,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452639486] [2024-06-21 16:57:46,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452639486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:57:46,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:57:46,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:57:46,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244111869] [2024-06-21 16:57:46,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:57:46,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:57:46,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:57:46,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:57:46,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:57:46,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:57:46,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 531 transitions, 5310 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:57:46,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:57:46,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:57:46,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:57:48,981 INFO L124 PetriNetUnfolderBase]: 3927/6243 cut-off events. [2024-06-21 16:57:48,982 INFO L125 PetriNetUnfolderBase]: For 2419534/2419534 co-relation queries the response was YES. [2024-06-21 16:57:49,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73916 conditions, 6243 events. 3927/6243 cut-off events. For 2419534/2419534 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 38367 event pairs, 786 based on Foata normal form. 1/6242 useless extension candidates. Maximal degree in co-relation 73706. Up to 5841 conditions per place. [2024-06-21 16:57:49,095 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 471 selfloop transitions, 49 changer transitions 0/565 dead transitions. [2024-06-21 16:57:49,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 565 transitions, 6984 flow [2024-06-21 16:57:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:57:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:57:49,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-21 16:57:49,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-21 16:57:49,096 INFO L175 Difference]: Start difference. First operand has 437 places, 531 transitions, 5310 flow. Second operand 9 states and 169 transitions. [2024-06-21 16:57:49,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 565 transitions, 6984 flow [2024-06-21 16:58:01,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 565 transitions, 6800 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-21 16:58:01,126 INFO L231 Difference]: Finished difference. Result has 442 places, 537 transitions, 5480 flow [2024-06-21 16:58:01,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5126, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5480, PETRI_PLACES=442, PETRI_TRANSITIONS=537} [2024-06-21 16:58:01,126 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 399 predicate places. [2024-06-21 16:58:01,126 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 537 transitions, 5480 flow [2024-06-21 16:58:01,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:58:01,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:01,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:01,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 16:58:01,127 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:58:01,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:01,127 INFO L85 PathProgramCache]: Analyzing trace with hash -208373325, now seen corresponding path program 2 times [2024-06-21 16:58:01,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:01,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647407772] [2024-06-21 16:58:01,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:01,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:58:02,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:02,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647407772] [2024-06-21 16:58:02,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647407772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:02,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:02,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:58:02,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907874020] [2024-06-21 16:58:02,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:02,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:58:02,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:02,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:58:02,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:58:02,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:58:02,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 537 transitions, 5480 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:58:02,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:02,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:58:02,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:04,273 INFO L124 PetriNetUnfolderBase]: 4030/6353 cut-off events. [2024-06-21 16:58:04,274 INFO L125 PetriNetUnfolderBase]: For 2462832/2462832 co-relation queries the response was YES. [2024-06-21 16:58:04,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75205 conditions, 6353 events. 4030/6353 cut-off events. For 2462832/2462832 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 38578 event pairs, 809 based on Foata normal form. 1/6352 useless extension candidates. Maximal degree in co-relation 74993. Up to 6116 conditions per place. [2024-06-21 16:58:04,383 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 513 selfloop transitions, 54 changer transitions 0/571 dead transitions. [2024-06-21 16:58:04,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 571 transitions, 7129 flow [2024-06-21 16:58:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:58:04,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:58:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-21 16:58:04,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-21 16:58:04,385 INFO L175 Difference]: Start difference. First operand has 442 places, 537 transitions, 5480 flow. Second operand 9 states and 160 transitions. [2024-06-21 16:58:04,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 571 transitions, 7129 flow [2024-06-21 16:58:16,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 571 transitions, 6935 flow, removed 77 selfloop flow, removed 5 redundant places. [2024-06-21 16:58:16,557 INFO L231 Difference]: Finished difference. Result has 446 places, 546 transitions, 5537 flow [2024-06-21 16:58:16,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5286, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5537, PETRI_PLACES=446, PETRI_TRANSITIONS=546} [2024-06-21 16:58:16,558 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 403 predicate places. [2024-06-21 16:58:16,558 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 546 transitions, 5537 flow [2024-06-21 16:58:16,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:58:16,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:16,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:16,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 16:58:16,559 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:58:16,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:16,559 INFO L85 PathProgramCache]: Analyzing trace with hash -208373511, now seen corresponding path program 3 times [2024-06-21 16:58:16,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:16,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342278077] [2024-06-21 16:58:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:16,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:58:17,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:17,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342278077] [2024-06-21 16:58:17,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342278077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:17,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:17,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:58:17,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679981647] [2024-06-21 16:58:17,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:17,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:58:17,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:17,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:58:17,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:58:17,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-21 16:58:17,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 546 transitions, 5537 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:58:17,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:17,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-21 16:58:17,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:19,516 INFO L124 PetriNetUnfolderBase]: 3950/6279 cut-off events. [2024-06-21 16:58:19,516 INFO L125 PetriNetUnfolderBase]: For 2494676/2494676 co-relation queries the response was YES. [2024-06-21 16:58:19,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75005 conditions, 6279 events. 3950/6279 cut-off events. For 2494676/2494676 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 38602 event pairs, 786 based on Foata normal form. 1/6278 useless extension candidates. Maximal degree in co-relation 74791. Up to 5904 conditions per place. [2024-06-21 16:58:19,621 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 492 selfloop transitions, 33 changer transitions 0/573 dead transitions. [2024-06-21 16:58:19,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 573 transitions, 6737 flow [2024-06-21 16:58:19,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:58:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:58:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-21 16:58:19,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 16:58:19,623 INFO L175 Difference]: Start difference. First operand has 446 places, 546 transitions, 5537 flow. Second operand 9 states and 162 transitions. [2024-06-21 16:58:19,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 573 transitions, 6737 flow [2024-06-21 16:58:33,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 573 transitions, 6641 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-21 16:58:33,145 INFO L231 Difference]: Finished difference. Result has 451 places, 549 transitions, 5609 flow [2024-06-21 16:58:33,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5441, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5609, PETRI_PLACES=451, PETRI_TRANSITIONS=549} [2024-06-21 16:58:33,146 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 408 predicate places. [2024-06-21 16:58:33,146 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 549 transitions, 5609 flow [2024-06-21 16:58:33,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2024-06-21 16:58:33,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:33,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:33,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 16:58:33,147 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:58:33,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:33,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1672826447, now seen corresponding path program 3 times [2024-06-21 16:58:33,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:33,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48832643] [2024-06-21 16:58:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:33,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:58:33,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:33,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48832643] [2024-06-21 16:58:33,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48832643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:33,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:33,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:58:33,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345583997] [2024-06-21 16:58:33,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:33,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:58:33,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:33,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:58:33,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:58:34,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:58:34,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 549 transitions, 5609 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:58:34,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:34,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:58:34,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:36,124 INFO L124 PetriNetUnfolderBase]: 4032/6360 cut-off events. [2024-06-21 16:58:36,125 INFO L125 PetriNetUnfolderBase]: For 2504939/2504939 co-relation queries the response was YES. [2024-06-21 16:58:36,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75448 conditions, 6360 events. 4032/6360 cut-off events. For 2504939/2504939 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 38660 event pairs, 813 based on Foata normal form. 1/6359 useless extension candidates. Maximal degree in co-relation 75232. Up to 6126 conditions per place. [2024-06-21 16:58:36,230 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 520 selfloop transitions, 49 changer transitions 0/573 dead transitions. [2024-06-21 16:58:36,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 573 transitions, 6807 flow [2024-06-21 16:58:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:58:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:58:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-21 16:58:36,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-21 16:58:36,232 INFO L175 Difference]: Start difference. First operand has 451 places, 549 transitions, 5609 flow. Second operand 9 states and 157 transitions. [2024-06-21 16:58:36,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 573 transitions, 6807 flow [2024-06-21 16:58:49,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 573 transitions, 6633 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-21 16:58:49,858 INFO L231 Difference]: Finished difference. Result has 453 places, 549 transitions, 5539 flow [2024-06-21 16:58:49,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5435, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5539, PETRI_PLACES=453, PETRI_TRANSITIONS=549} [2024-06-21 16:58:49,859 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 410 predicate places. [2024-06-21 16:58:49,859 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 549 transitions, 5539 flow [2024-06-21 16:58:49,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:58:49,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:49,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:49,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 16:58:49,859 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:58:49,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:49,860 INFO L85 PathProgramCache]: Analyzing trace with hash -474162861, now seen corresponding path program 1 times [2024-06-21 16:58:49,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:49,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933963569] [2024-06-21 16:58:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:49,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:58:50,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:50,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933963569] [2024-06-21 16:58:50,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933963569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:50,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:50,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:58:50,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808548962] [2024-06-21 16:58:50,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:50,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:58:50,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:50,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:58:50,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:58:51,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:58:51,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 549 transitions, 5539 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:58:51,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:51,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:58:51,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:53,098 INFO L124 PetriNetUnfolderBase]: 4040/6372 cut-off events. [2024-06-21 16:58:53,098 INFO L125 PetriNetUnfolderBase]: For 2546624/2546624 co-relation queries the response was YES. [2024-06-21 16:58:53,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75668 conditions, 6372 events. 4040/6372 cut-off events. For 2546624/2546624 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 38647 event pairs, 662 based on Foata normal form. 2/6372 useless extension candidates. Maximal degree in co-relation 75451. Up to 6050 conditions per place. [2024-06-21 16:58:53,210 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 525 selfloop transitions, 55 changer transitions 0/584 dead transitions. [2024-06-21 16:58:53,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 584 transitions, 7203 flow [2024-06-21 16:58:53,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:58:53,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:58:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-21 16:58:53,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-21 16:58:53,211 INFO L175 Difference]: Start difference. First operand has 453 places, 549 transitions, 5539 flow. Second operand 9 states and 163 transitions. [2024-06-21 16:58:53,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 584 transitions, 7203 flow [2024-06-21 16:59:07,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 584 transitions, 7095 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 16:59:07,438 INFO L231 Difference]: Finished difference. Result has 454 places, 553 transitions, 5650 flow [2024-06-21 16:59:07,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5431, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5650, PETRI_PLACES=454, PETRI_TRANSITIONS=553} [2024-06-21 16:59:07,439 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 411 predicate places. [2024-06-21 16:59:07,439 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 553 transitions, 5650 flow [2024-06-21 16:59:07,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:59:07,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:07,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:07,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 16:59:07,439 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:59:07,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:07,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1672829423, now seen corresponding path program 2 times [2024-06-21 16:59:07,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:07,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763312567] [2024-06-21 16:59:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:07,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:08,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:08,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763312567] [2024-06-21 16:59:08,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763312567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:08,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:08,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:59:08,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816028987] [2024-06-21 16:59:08,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:08,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:59:08,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:08,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:59:08,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:59:08,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:59:08,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 553 transitions, 5650 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:59:08,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:08,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:59:08,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:10,566 INFO L124 PetriNetUnfolderBase]: 4048/6384 cut-off events. [2024-06-21 16:59:10,566 INFO L125 PetriNetUnfolderBase]: For 2576816/2576816 co-relation queries the response was YES. [2024-06-21 16:59:10,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76116 conditions, 6384 events. 4048/6384 cut-off events. For 2576816/2576816 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 38755 event pairs, 813 based on Foata normal form. 2/6384 useless extension candidates. Maximal degree in co-relation 75898. Up to 6147 conditions per place. [2024-06-21 16:59:10,676 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 528 selfloop transitions, 48 changer transitions 0/580 dead transitions. [2024-06-21 16:59:10,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 580 transitions, 6918 flow [2024-06-21 16:59:10,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:59:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:59:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-21 16:59:10,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-21 16:59:10,678 INFO L175 Difference]: Start difference. First operand has 454 places, 553 transitions, 5650 flow. Second operand 9 states and 157 transitions. [2024-06-21 16:59:10,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 580 transitions, 6918 flow [2024-06-21 16:59:25,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 580 transitions, 6767 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-21 16:59:25,361 INFO L231 Difference]: Finished difference. Result has 458 places, 555 transitions, 5658 flow [2024-06-21 16:59:25,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5523, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5658, PETRI_PLACES=458, PETRI_TRANSITIONS=555} [2024-06-21 16:59:25,362 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 415 predicate places. [2024-06-21 16:59:25,362 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 555 transitions, 5658 flow [2024-06-21 16:59:25,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:59:25,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:25,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:25,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 16:59:25,363 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 16:59:25,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:25,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1673155853, now seen corresponding path program 3 times [2024-06-21 16:59:25,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:25,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670289017] [2024-06-21 16:59:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:25,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:26,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:26,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670289017] [2024-06-21 16:59:26,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670289017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:26,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:26,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:59:26,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408923923] [2024-06-21 16:59:26,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:26,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:59:26,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:26,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:59:26,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:59:26,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-21 16:59:26,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 555 transitions, 5658 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2024-06-21 16:59:26,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:26,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-21 16:59:26,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:28,728 INFO L124 PetriNetUnfolderBase]: 4056/6396 cut-off events. [2024-06-21 16:59:28,729 INFO L125 PetriNetUnfolderBase]: For 2605861/2605861 co-relation queries the response was YES. [2024-06-21 16:59:28,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76274 conditions, 6396 events. 4056/6396 cut-off events. For 2605861/2605861 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 38892 event pairs, 811 based on Foata normal form. 2/6396 useless extension candidates. Maximal degree in co-relation 76054. Up to 6145 conditions per place. [2024-06-21 16:59:28,840 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 528 selfloop transitions, 51 changer transitions 0/583 dead transitions. [2024-06-21 16:59:28,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 583 transitions, 6914 flow [2024-06-21 16:59:28,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:59:28,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:59:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-21 16:59:28,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-21 16:59:28,841 INFO L175 Difference]: Start difference. First operand has 458 places, 555 transitions, 5658 flow. Second operand 9 states and 159 transitions. [2024-06-21 16:59:28,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 583 transitions, 6914 flow Killed by 15