./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix009.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix009.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:21:39,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:21:39,413 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:21:39,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:21:39,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:21:39,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:21:39,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:21:39,444 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:21:39,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:21:39,447 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:21:39,448 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:21:39,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:21:39,449 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:21:39,450 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:21:39,450 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:21:39,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:21:39,450 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:21:39,450 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:21:39,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:21:39,451 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:21:39,451 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:21:39,451 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:21:39,452 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:21:39,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:21:39,452 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:21:39,452 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:21:39,452 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:21:39,453 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:21:39,453 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:21:39,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:21:39,454 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:21:39,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:21:39,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:21:39,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:21:39,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:21:39,455 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:21:39,455 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:21:39,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:21:39,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:21:39,456 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:21:39,456 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:21:39,456 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:21:39,456 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:21:39,457 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:21:39,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:21:39,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:21:39,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:21:39,651 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:21:39,652 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:21:39,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-28 01:21:40,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:21:40,948 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:21:40,949 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-28 01:21:40,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c10f0041b/96cb080d39dd47f1a101cf9a8a03e6db/FLAG5949dd697 [2024-06-28 01:21:40,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c10f0041b/96cb080d39dd47f1a101cf9a8a03e6db [2024-06-28 01:21:40,974 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:21:40,975 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:21:40,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix009.opt.yml/witness.yml [2024-06-28 01:21:41,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:21:41,102 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:21:41,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:21:41,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:21:41,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:21:41,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:21:40" (1/2) ... [2024-06-28 01:21:41,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c31cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:41, skipping insertion in model container [2024-06-28 01:21:41,110 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:21:40" (1/2) ... [2024-06-28 01:21:41,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@182f7afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:41, skipping insertion in model container [2024-06-28 01:21:41,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:21:41" (2/2) ... [2024-06-28 01:21:41,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c31cb2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41, skipping insertion in model container [2024-06-28 01:21:41,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:21:41" (2/2) ... [2024-06-28 01:21:41,113 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:21:41,170 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:21:41,171 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] (((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 01:21:41,172 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 01:21:41,172 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:21:41,172 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-28 01:21:41,210 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:21:41,322 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.opt.i[987,1000] [2024-06-28 01:21:41,473 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:21:41,480 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:21:41,522 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.opt.i[987,1000] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:21:41,569 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:21:41,596 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:21:41,596 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41 WrapperNode [2024-06-28 01:21:41,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:21:41,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:21:41,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:21:41,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:21:41,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41" (1/1) ... [2024-06-28 01:21:41,614 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41" (1/1) ... [2024-06-28 01:21:41,638 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 134 [2024-06-28 01:21:41,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:21:41,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:21:41,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:21:41,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:21:41,671 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41" (1/1) ... [2024-06-28 01:21:41,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41" (1/1) ... [2024-06-28 01:21:41,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41" (1/1) ... [2024-06-28 01:21:41,714 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]. [2024-06-28 01:21:41,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41" (1/1) ... [2024-06-28 01:21:41,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41" (1/1) ... [2024-06-28 01:21:41,731 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41" (1/1) ... [2024-06-28 01:21:41,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41" (1/1) ... [2024-06-28 01:21:41,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41" (1/1) ... [2024-06-28 01:21:41,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41" (1/1) ... [2024-06-28 01:21:41,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:21:41,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:21:41,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:21:41,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:21:41,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41" (1/1) ... [2024-06-28 01:21:41,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:21:41,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:21:41,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:21:41,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:21:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:21:41,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:21:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:21:41,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:21:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:21:41,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:21:41,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:21:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:21:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:21:41,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:21:41,853 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:21:41,960 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:21:41,961 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:21:42,251 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:21:42,251 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:21:42,384 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:21:42,384 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:21:42,385 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:21:42 BoogieIcfgContainer [2024-06-28 01:21:42,385 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:21:42,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:21:42,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:21:42,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:21:42,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:21:40" (1/4) ... [2024-06-28 01:21:42,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f152e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:21:42, skipping insertion in model container [2024-06-28 01:21:42,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:21:41" (2/4) ... [2024-06-28 01:21:42,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f152e3e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:21:42, skipping insertion in model container [2024-06-28 01:21:42,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:41" (3/4) ... [2024-06-28 01:21:42,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f152e3e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:21:42, skipping insertion in model container [2024-06-28 01:21:42,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:21:42" (4/4) ... [2024-06-28 01:21:42,397 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.opt.i [2024-06-28 01:21:42,436 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:21:42,437 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:21:42,437 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:21:42,467 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:21:42,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-06-28 01:21:42,519 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-06-28 01:21:42,519 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:21:42,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-06-28 01:21:42,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-06-28 01:21:42,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-06-28 01:21:42,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:21:42,543 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;@6bb5ccb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:21:42,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:21:42,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:21:42,547 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:21:42,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:21:42,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:42,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:21:42,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:42,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:42,553 INFO L85 PathProgramCache]: Analyzing trace with hash 347538124, now seen corresponding path program 1 times [2024-06-28 01:21:42,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:42,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110644017] [2024-06-28 01:21:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:42,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:43,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:43,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110644017] [2024-06-28 01:21:43,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110644017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:43,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:43,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:21:43,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76614761] [2024-06-28 01:21:43,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:43,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:21:43,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:43,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:21:43,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:21:43,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-28 01:21:43,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 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) [2024-06-28 01:21:43,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:43,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-28 01:21:43,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:43,458 INFO L124 PetriNetUnfolderBase]: 472/846 cut-off events. [2024-06-28 01:21:43,459 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 01:21:43,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 846 events. 472/846 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4467 event pairs, 210 based on Foata normal form. 43/832 useless extension candidates. Maximal degree in co-relation 1642. Up to 780 conditions per place. [2024-06-28 01:21:43,465 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 30 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-28 01:21:43,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 169 flow [2024-06-28 01:21:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:21:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:21:43,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-28 01:21:43,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-06-28 01:21:43,475 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 80 transitions. [2024-06-28 01:21:43,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 169 flow [2024-06-28 01:21:43,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:21:43,479 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 102 flow [2024-06-28 01:21:43,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-06-28 01:21:43,482 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-28 01:21:43,483 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 102 flow [2024-06-28 01:21:43,483 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) [2024-06-28 01:21:43,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:43,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:43,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:21:43,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:43,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:43,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1023223257, now seen corresponding path program 1 times [2024-06-28 01:21:43,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:43,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256762729] [2024-06-28 01:21:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:43,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:43,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:43,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256762729] [2024-06-28 01:21:43,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256762729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:43,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:43,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:21:43,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237336618] [2024-06-28 01:21:43,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:43,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:21:43,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:43,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:21:43,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:21:43,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-28 01:21:43,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 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) [2024-06-28 01:21:43,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:43,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-28 01:21:43,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:44,078 INFO L124 PetriNetUnfolderBase]: 539/1075 cut-off events. [2024-06-28 01:21:44,078 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-28 01:21:44,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2199 conditions, 1075 events. 539/1075 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6196 event pairs, 355 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 2187. Up to 870 conditions per place. [2024-06-28 01:21:44,083 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 39 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-28 01:21:44,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 240 flow [2024-06-28 01:21:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:21:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:21:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-06-28 01:21:44,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-06-28 01:21:44,084 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 102 flow. Second operand 4 states and 100 transitions. [2024-06-28 01:21:44,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 240 flow [2024-06-28 01:21:44,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:21:44,086 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 136 flow [2024-06-28 01:21:44,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-28 01:21:44,087 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-28 01:21:44,087 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 136 flow [2024-06-28 01:21:44,087 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) [2024-06-28 01:21:44,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:44,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:44,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:21:44,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:44,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:44,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1655148865, now seen corresponding path program 1 times [2024-06-28 01:21:44,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:44,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401244098] [2024-06-28 01:21:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:44,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:44,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:44,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401244098] [2024-06-28 01:21:44,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401244098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:44,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:44,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:21:44,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307548053] [2024-06-28 01:21:44,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:44,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:21:44,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:44,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:21:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:21:44,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:21:44,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:44,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:44,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:21:44,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:44,727 INFO L124 PetriNetUnfolderBase]: 636/1099 cut-off events. [2024-06-28 01:21:44,727 INFO L125 PetriNetUnfolderBase]: For 388/388 co-relation queries the response was YES. [2024-06-28 01:21:44,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 1099 events. 636/1099 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5674 event pairs, 252 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 2603. Up to 1008 conditions per place. [2024-06-28 01:21:44,732 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 48 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-28 01:21:44,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 68 transitions, 320 flow [2024-06-28 01:21:44,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:21:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:21:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 01:21:44,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-06-28 01:21:44,733 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 136 flow. Second operand 5 states and 120 transitions. [2024-06-28 01:21:44,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 68 transitions, 320 flow [2024-06-28 01:21:44,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 306 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 01:21:44,735 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 170 flow [2024-06-28 01:21:44,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-06-28 01:21:44,735 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-28 01:21:44,736 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 170 flow [2024-06-28 01:21:44,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:44,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:44,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:44,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:21:44,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:44,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:44,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1657516553, now seen corresponding path program 1 times [2024-06-28 01:21:44,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:44,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301139077] [2024-06-28 01:21:44,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:44,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:44,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301139077] [2024-06-28 01:21:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301139077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:44,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:44,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:21:44,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543392915] [2024-06-28 01:21:44,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:44,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:21:44,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:44,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:21:44,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:21:44,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-06-28 01:21:44,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:44,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:44,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-06-28 01:21:44,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:44,858 INFO L124 PetriNetUnfolderBase]: 204/563 cut-off events. [2024-06-28 01:21:44,858 INFO L125 PetriNetUnfolderBase]: For 250/277 co-relation queries the response was YES. [2024-06-28 01:21:44,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1118 conditions, 563 events. 204/563 cut-off events. For 250/277 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3657 event pairs, 91 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 1103. Up to 333 conditions per place. [2024-06-28 01:21:44,860 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 21 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2024-06-28 01:21:44,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 207 flow [2024-06-28 01:21:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:21:44,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:21:44,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-06-28 01:21:44,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-06-28 01:21:44,863 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 170 flow. Second operand 3 states and 84 transitions. [2024-06-28 01:21:44,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 207 flow [2024-06-28 01:21:44,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 192 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:21:44,866 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 136 flow [2024-06-28 01:21:44,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-28 01:21:44,868 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2024-06-28 01:21:44,868 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 136 flow [2024-06-28 01:21:44,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:44,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:44,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:44,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:21:44,868 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:44,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:44,868 INFO L85 PathProgramCache]: Analyzing trace with hash 232794958, now seen corresponding path program 1 times [2024-06-28 01:21:44,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:44,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836781893] [2024-06-28 01:21:44,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:44,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:45,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:45,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836781893] [2024-06-28 01:21:45,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836781893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:45,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:45,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:21:45,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818975261] [2024-06-28 01:21:45,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:45,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:21:45,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:45,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:21:45,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:21:45,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:21:45,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:45,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:45,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:21:45,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:45,612 INFO L124 PetriNetUnfolderBase]: 549/1037 cut-off events. [2024-06-28 01:21:45,612 INFO L125 PetriNetUnfolderBase]: For 659/659 co-relation queries the response was YES. [2024-06-28 01:21:45,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2421 conditions, 1037 events. 549/1037 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5611 event pairs, 233 based on Foata normal form. 4/1007 useless extension candidates. Maximal degree in co-relation 2406. Up to 834 conditions per place. [2024-06-28 01:21:45,616 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 51 selfloop transitions, 9 changer transitions 5/75 dead transitions. [2024-06-28 01:21:45,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 75 transitions, 352 flow [2024-06-28 01:21:45,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:21:45,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:21:45,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:21:45,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6096491228070176 [2024-06-28 01:21:45,617 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 136 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:21:45,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 75 transitions, 352 flow [2024-06-28 01:21:45,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 75 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:21:45,619 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 163 flow [2024-06-28 01:21:45,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-06-28 01:21:45,620 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-28 01:21:45,620 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 163 flow [2024-06-28 01:21:45,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:45,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:45,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:45,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:21:45,620 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:45,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:45,621 INFO L85 PathProgramCache]: Analyzing trace with hash 558367265, now seen corresponding path program 1 times [2024-06-28 01:21:45,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:45,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946534144] [2024-06-28 01:21:45,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:45,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:46,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:46,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946534144] [2024-06-28 01:21:46,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946534144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:46,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:46,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:21:46,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814791207] [2024-06-28 01:21:46,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:46,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:21:46,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:46,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:21:46,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:21:46,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:21:46,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 163 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) [2024-06-28 01:21:46,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:46,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:21:46,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:46,430 INFO L124 PetriNetUnfolderBase]: 430/891 cut-off events. [2024-06-28 01:21:46,430 INFO L125 PetriNetUnfolderBase]: For 727/729 co-relation queries the response was YES. [2024-06-28 01:21:46,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2146 conditions, 891 events. 430/891 cut-off events. For 727/729 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5036 event pairs, 176 based on Foata normal form. 3/867 useless extension candidates. Maximal degree in co-relation 2129. Up to 712 conditions per place. [2024-06-28 01:21:46,434 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 39 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-28 01:21:46,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 301 flow [2024-06-28 01:21:46,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:21:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:21:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-06-28 01:21:46,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-28 01:21:46,435 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 163 flow. Second operand 5 states and 100 transitions. [2024-06-28 01:21:46,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 301 flow [2024-06-28 01:21:46,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 276 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:21:46,438 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 193 flow [2024-06-28 01:21:46,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 01:21:46,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-28 01:21:46,438 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 193 flow [2024-06-28 01:21:46,438 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) [2024-06-28 01:21:46,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:46,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:46,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:21:46,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:46,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash 162585200, now seen corresponding path program 1 times [2024-06-28 01:21:46,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:46,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928290651] [2024-06-28 01:21:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:46,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:47,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:47,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928290651] [2024-06-28 01:21:47,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928290651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:47,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:47,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:21:47,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464475994] [2024-06-28 01:21:47,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:47,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:21:47,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:47,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:21:47,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:21:47,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:21:47,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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) [2024-06-28 01:21:47,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:47,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:21:47,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:47,407 INFO L124 PetriNetUnfolderBase]: 432/880 cut-off events. [2024-06-28 01:21:47,407 INFO L125 PetriNetUnfolderBase]: For 867/869 co-relation queries the response was YES. [2024-06-28 01:21:47,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 880 events. 432/880 cut-off events. For 867/869 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4907 event pairs, 173 based on Foata normal form. 4/861 useless extension candidates. Maximal degree in co-relation 2225. Up to 694 conditions per place. [2024-06-28 01:21:47,412 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 45 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2024-06-28 01:21:47,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 349 flow [2024-06-28 01:21:47,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:21:47,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:21:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-28 01:21:47,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-28 01:21:47,413 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 193 flow. Second operand 6 states and 120 transitions. [2024-06-28 01:21:47,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 349 flow [2024-06-28 01:21:47,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 65 transitions, 340 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:21:47,416 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 219 flow [2024-06-28 01:21:47,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-28 01:21:47,418 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-28 01:21:47,418 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 219 flow [2024-06-28 01:21:47,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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) [2024-06-28 01:21:47,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:47,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:47,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:21:47,418 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:47,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:47,419 INFO L85 PathProgramCache]: Analyzing trace with hash 744867512, now seen corresponding path program 1 times [2024-06-28 01:21:47,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:47,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504716229] [2024-06-28 01:21:47,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:47,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:47,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:47,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504716229] [2024-06-28 01:21:47,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504716229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:47,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:47,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:21:47,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547385508] [2024-06-28 01:21:47,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:47,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:21:47,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:47,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:21:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:21:47,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:21:47,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 219 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) [2024-06-28 01:21:47,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:47,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:21:47,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:48,288 INFO L124 PetriNetUnfolderBase]: 531/1031 cut-off events. [2024-06-28 01:21:48,289 INFO L125 PetriNetUnfolderBase]: For 1352/1354 co-relation queries the response was YES. [2024-06-28 01:21:48,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1031 events. 531/1031 cut-off events. For 1352/1354 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5671 event pairs, 210 based on Foata normal form. 3/1004 useless extension candidates. Maximal degree in co-relation 2785. Up to 858 conditions per place. [2024-06-28 01:21:48,293 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 48 selfloop transitions, 15 changer transitions 0/73 dead transitions. [2024-06-28 01:21:48,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 73 transitions, 433 flow [2024-06-28 01:21:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 01:21:48,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48120300751879697 [2024-06-28 01:21:48,296 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 219 flow. Second operand 7 states and 128 transitions. [2024-06-28 01:21:48,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 73 transitions, 433 flow [2024-06-28 01:21:48,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 412 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:21:48,303 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 317 flow [2024-06-28 01:21:48,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-06-28 01:21:48,305 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-28 01:21:48,305 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 317 flow [2024-06-28 01:21:48,306 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) [2024-06-28 01:21:48,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:48,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:48,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:21:48,306 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:48,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:48,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1073454976, now seen corresponding path program 2 times [2024-06-28 01:21:48,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:48,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565609345] [2024-06-28 01:21:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:48,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:48,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:48,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565609345] [2024-06-28 01:21:48,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565609345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:48,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:48,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:21:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506998401] [2024-06-28 01:21:48,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:48,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:21:48,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:48,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:21:48,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:21:48,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:21:48,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 317 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) [2024-06-28 01:21:48,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:48,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:21:48,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:49,122 INFO L124 PetriNetUnfolderBase]: 550/1099 cut-off events. [2024-06-28 01:21:49,122 INFO L125 PetriNetUnfolderBase]: For 2045/2052 co-relation queries the response was YES. [2024-06-28 01:21:49,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3215 conditions, 1099 events. 550/1099 cut-off events. For 2045/2052 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6205 event pairs, 316 based on Foata normal form. 8/1068 useless extension candidates. Maximal degree in co-relation 3189. Up to 886 conditions per place. [2024-06-28 01:21:49,129 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 54 selfloop transitions, 22 changer transitions 0/86 dead transitions. [2024-06-28 01:21:49,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 575 flow [2024-06-28 01:21:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:49,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 01:21:49,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037593984962406 [2024-06-28 01:21:49,131 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 317 flow. Second operand 7 states and 134 transitions. [2024-06-28 01:21:49,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 575 flow [2024-06-28 01:21:49,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 561 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 01:21:49,135 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 433 flow [2024-06-28 01:21:49,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2024-06-28 01:21:49,136 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-06-28 01:21:49,136 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 433 flow [2024-06-28 01:21:49,136 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) [2024-06-28 01:21:49,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:49,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:49,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:21:49,136 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:49,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:49,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1273484477, now seen corresponding path program 1 times [2024-06-28 01:21:49,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:49,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668493028] [2024-06-28 01:21:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:49,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:49,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:49,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668493028] [2024-06-28 01:21:49,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668493028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:49,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:49,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:49,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763455248] [2024-06-28 01:21:49,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:49,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:49,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:49,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:49,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:21:49,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 433 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:49,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:49,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:21:49,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:50,268 INFO L124 PetriNetUnfolderBase]: 553/1091 cut-off events. [2024-06-28 01:21:50,268 INFO L125 PetriNetUnfolderBase]: For 2602/2606 co-relation queries the response was YES. [2024-06-28 01:21:50,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3368 conditions, 1091 events. 553/1091 cut-off events. For 2602/2606 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6085 event pairs, 176 based on Foata normal form. 8/1058 useless extension candidates. Maximal degree in co-relation 3339. Up to 804 conditions per place. [2024-06-28 01:21:50,274 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 72 selfloop transitions, 22 changer transitions 0/105 dead transitions. [2024-06-28 01:21:50,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 105 transitions, 729 flow [2024-06-28 01:21:50,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 01:21:50,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592105263157895 [2024-06-28 01:21:50,276 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 433 flow. Second operand 8 states and 170 transitions. [2024-06-28 01:21:50,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 105 transitions, 729 flow [2024-06-28 01:21:50,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 105 transitions, 701 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 01:21:50,280 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 454 flow [2024-06-28 01:21:50,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=454, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-06-28 01:21:50,280 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-06-28 01:21:50,281 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 454 flow [2024-06-28 01:21:50,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:50,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:50,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:50,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:21:50,281 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:50,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:50,282 INFO L85 PathProgramCache]: Analyzing trace with hash 745164182, now seen corresponding path program 3 times [2024-06-28 01:21:50,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:50,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176255843] [2024-06-28 01:21:50,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:50,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:50,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:50,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176255843] [2024-06-28 01:21:50,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176255843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:50,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:50,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:21:50,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695585365] [2024-06-28 01:21:50,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:50,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:21:50,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:50,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:21:50,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:21:50,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:21:50,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 454 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) [2024-06-28 01:21:50,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:50,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:21:50,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:51,106 INFO L124 PetriNetUnfolderBase]: 547/1087 cut-off events. [2024-06-28 01:21:51,107 INFO L125 PetriNetUnfolderBase]: For 3257/3265 co-relation queries the response was YES. [2024-06-28 01:21:51,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3570 conditions, 1087 events. 547/1087 cut-off events. For 3257/3265 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6121 event pairs, 260 based on Foata normal form. 9/1055 useless extension candidates. Maximal degree in co-relation 3539. Up to 851 conditions per place. [2024-06-28 01:21:51,114 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 50 selfloop transitions, 26 changer transitions 0/86 dead transitions. [2024-06-28 01:21:51,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 672 flow [2024-06-28 01:21:51,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:51,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 01:21:51,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48120300751879697 [2024-06-28 01:21:51,115 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 454 flow. Second operand 7 states and 128 transitions. [2024-06-28 01:21:51,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 672 flow [2024-06-28 01:21:51,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 624 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:51,119 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 483 flow [2024-06-28 01:21:51,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=483, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2024-06-28 01:21:51,120 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2024-06-28 01:21:51,120 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 483 flow [2024-06-28 01:21:51,120 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) [2024-06-28 01:21:51,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:51,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:51,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:21:51,121 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:51,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:51,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1883918088, now seen corresponding path program 1 times [2024-06-28 01:21:51,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:51,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580245370] [2024-06-28 01:21:51,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:51,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:51,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:51,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580245370] [2024-06-28 01:21:51,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580245370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:51,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:51,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:51,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453335374] [2024-06-28 01:21:51,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:51,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:51,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:51,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:51,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:51,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:51,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 483 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:51,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:51,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:51,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:51,926 INFO L124 PetriNetUnfolderBase]: 612/1186 cut-off events. [2024-06-28 01:21:51,926 INFO L125 PetriNetUnfolderBase]: For 3716/3716 co-relation queries the response was YES. [2024-06-28 01:21:51,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 1186 events. 612/1186 cut-off events. For 3716/3716 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6508 event pairs, 260 based on Foata normal form. 1/1146 useless extension candidates. Maximal degree in co-relation 3932. Up to 951 conditions per place. [2024-06-28 01:21:51,936 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 70 selfloop transitions, 26 changer transitions 0/104 dead transitions. [2024-06-28 01:21:51,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 104 transitions, 803 flow [2024-06-28 01:21:51,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:51,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 01:21:51,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-28 01:21:51,938 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 483 flow. Second operand 8 states and 146 transitions. [2024-06-28 01:21:51,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 104 transitions, 803 flow [2024-06-28 01:21:51,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 104 transitions, 742 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:51,945 INFO L231 Difference]: Finished difference. Result has 81 places, 81 transitions, 569 flow [2024-06-28 01:21:51,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=569, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2024-06-28 01:21:51,946 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2024-06-28 01:21:51,946 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 569 flow [2024-06-28 01:21:51,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:51,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:51,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:51,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:21:51,947 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:51,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1151652922, now seen corresponding path program 2 times [2024-06-28 01:21:51,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:51,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398524631] [2024-06-28 01:21:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:51,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:52,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:52,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398524631] [2024-06-28 01:21:52,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398524631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:52,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:52,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:52,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232254895] [2024-06-28 01:21:52,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:52,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:52,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:52,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:52,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:52,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:52,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 569 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:52,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:52,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:52,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:52,909 INFO L124 PetriNetUnfolderBase]: 643/1242 cut-off events. [2024-06-28 01:21:52,909 INFO L125 PetriNetUnfolderBase]: For 4996/4996 co-relation queries the response was YES. [2024-06-28 01:21:52,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4492 conditions, 1242 events. 643/1242 cut-off events. For 4996/4996 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6864 event pairs, 261 based on Foata normal form. 1/1200 useless extension candidates. Maximal degree in co-relation 4456. Up to 989 conditions per place. [2024-06-28 01:21:52,917 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 71 selfloop transitions, 34 changer transitions 0/113 dead transitions. [2024-06-28 01:21:52,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 113 transitions, 954 flow [2024-06-28 01:21:52,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:52,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:52,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 01:21:52,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-28 01:21:52,919 INFO L175 Difference]: Start difference. First operand has 81 places, 81 transitions, 569 flow. Second operand 8 states and 146 transitions. [2024-06-28 01:21:52,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 113 transitions, 954 flow [2024-06-28 01:21:52,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 113 transitions, 885 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 01:21:52,926 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 700 flow [2024-06-28 01:21:52,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=700, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2024-06-28 01:21:52,926 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-28 01:21:52,926 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 700 flow [2024-06-28 01:21:52,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:52,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:52,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:52,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:21:52,927 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:52,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:52,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1151472223, now seen corresponding path program 1 times [2024-06-28 01:21:52,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:52,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262144194] [2024-06-28 01:21:52,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:52,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:53,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:53,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262144194] [2024-06-28 01:21:53,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262144194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:53,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:53,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:53,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034146027] [2024-06-28 01:21:53,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:53,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:53,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:53,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:53,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:53,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:21:53,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 700 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) [2024-06-28 01:21:53,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:53,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:21:53,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:53,911 INFO L124 PetriNetUnfolderBase]: 607/1209 cut-off events. [2024-06-28 01:21:53,912 INFO L125 PetriNetUnfolderBase]: For 5468/5468 co-relation queries the response was YES. [2024-06-28 01:21:53,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4468 conditions, 1209 events. 607/1209 cut-off events. For 5468/5468 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6891 event pairs, 269 based on Foata normal form. 1/1168 useless extension candidates. Maximal degree in co-relation 4429. Up to 940 conditions per place. [2024-06-28 01:21:53,919 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 76 selfloop transitions, 24 changer transitions 0/117 dead transitions. [2024-06-28 01:21:53,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 117 transitions, 1000 flow [2024-06-28 01:21:53,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:53,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 01:21:53,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-06-28 01:21:53,921 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 700 flow. Second operand 8 states and 151 transitions. [2024-06-28 01:21:53,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 117 transitions, 1000 flow [2024-06-28 01:21:53,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 117 transitions, 960 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:21:53,927 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 730 flow [2024-06-28 01:21:53,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=730, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2024-06-28 01:21:53,928 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2024-06-28 01:21:53,928 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 730 flow [2024-06-28 01:21:53,928 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) [2024-06-28 01:21:53,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:53,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:53,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:21:53,929 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:53,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:53,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1151472502, now seen corresponding path program 3 times [2024-06-28 01:21:53,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:53,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424594819] [2024-06-28 01:21:53,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:53,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:54,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:54,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424594819] [2024-06-28 01:21:54,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424594819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:54,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:54,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:54,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850765294] [2024-06-28 01:21:54,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:54,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:54,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:54,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:54,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:54,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:54,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 730 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:54,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:54,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:54,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:54,847 INFO L124 PetriNetUnfolderBase]: 665/1279 cut-off events. [2024-06-28 01:21:54,847 INFO L125 PetriNetUnfolderBase]: For 6463/6463 co-relation queries the response was YES. [2024-06-28 01:21:54,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4962 conditions, 1279 events. 665/1279 cut-off events. For 6463/6463 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7079 event pairs, 257 based on Foata normal form. 1/1235 useless extension candidates. Maximal degree in co-relation 4922. Up to 985 conditions per place. [2024-06-28 01:21:54,858 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 71 selfloop transitions, 40 changer transitions 0/119 dead transitions. [2024-06-28 01:21:54,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 119 transitions, 1062 flow [2024-06-28 01:21:54,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:54,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 01:21:54,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355263157894735 [2024-06-28 01:21:54,860 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 730 flow. Second operand 8 states and 147 transitions. [2024-06-28 01:21:54,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 119 transitions, 1062 flow [2024-06-28 01:21:54,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 119 transitions, 1010 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:21:54,870 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 790 flow [2024-06-28 01:21:54,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=790, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2024-06-28 01:21:54,872 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2024-06-28 01:21:54,872 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 790 flow [2024-06-28 01:21:54,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:54,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:54,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:54,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:21:54,872 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:54,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash -325610836, now seen corresponding path program 4 times [2024-06-28 01:21:54,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:54,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380740164] [2024-06-28 01:21:54,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:54,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:55,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:55,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380740164] [2024-06-28 01:21:55,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380740164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:55,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:55,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:55,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048471322] [2024-06-28 01:21:55,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:55,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:55,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:55,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:55,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:55,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:55,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 790 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:55,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:55,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:55,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:55,875 INFO L124 PetriNetUnfolderBase]: 676/1302 cut-off events. [2024-06-28 01:21:55,875 INFO L125 PetriNetUnfolderBase]: For 7610/7610 co-relation queries the response was YES. [2024-06-28 01:21:55,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5249 conditions, 1302 events. 676/1302 cut-off events. For 7610/7610 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7294 event pairs, 262 based on Foata normal form. 1/1258 useless extension candidates. Maximal degree in co-relation 5208. Up to 1022 conditions per place. [2024-06-28 01:21:55,883 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 74 selfloop transitions, 36 changer transitions 0/118 dead transitions. [2024-06-28 01:21:55,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 118 transitions, 1108 flow [2024-06-28 01:21:55,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:55,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 01:21:55,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2024-06-28 01:21:55,884 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 790 flow. Second operand 7 states and 129 transitions. [2024-06-28 01:21:55,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 118 transitions, 1108 flow [2024-06-28 01:21:55,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 118 transitions, 1014 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:21:55,895 INFO L231 Difference]: Finished difference. Result has 95 places, 98 transitions, 812 flow [2024-06-28 01:21:55,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=812, PETRI_PLACES=95, PETRI_TRANSITIONS=98} [2024-06-28 01:21:55,896 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2024-06-28 01:21:55,897 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 98 transitions, 812 flow [2024-06-28 01:21:55,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:55,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:55,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:55,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:21:55,898 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:55,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:55,898 INFO L85 PathProgramCache]: Analyzing trace with hash -325430137, now seen corresponding path program 2 times [2024-06-28 01:21:55,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:55,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891037543] [2024-06-28 01:21:55,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:55,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:56,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:56,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891037543] [2024-06-28 01:21:56,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891037543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:56,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:56,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:56,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202067115] [2024-06-28 01:21:56,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:56,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:56,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:56,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:56,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:56,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:21:56,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 98 transitions, 812 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) [2024-06-28 01:21:56,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:56,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:21:56,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:57,019 INFO L124 PetriNetUnfolderBase]: 639/1273 cut-off events. [2024-06-28 01:21:57,020 INFO L125 PetriNetUnfolderBase]: For 7882/7882 co-relation queries the response was YES. [2024-06-28 01:21:57,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5072 conditions, 1273 events. 639/1273 cut-off events. For 7882/7882 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7372 event pairs, 265 based on Foata normal form. 1/1228 useless extension candidates. Maximal degree in co-relation 5030. Up to 959 conditions per place. [2024-06-28 01:21:57,027 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 75 selfloop transitions, 26 changer transitions 0/120 dead transitions. [2024-06-28 01:21:57,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 120 transitions, 1110 flow [2024-06-28 01:21:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:57,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 01:21:57,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:21:57,028 INFO L175 Difference]: Start difference. First operand has 95 places, 98 transitions, 812 flow. Second operand 7 states and 133 transitions. [2024-06-28 01:21:57,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 120 transitions, 1110 flow [2024-06-28 01:21:57,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 120 transitions, 1024 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:57,037 INFO L231 Difference]: Finished difference. Result has 97 places, 100 transitions, 807 flow [2024-06-28 01:21:57,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=807, PETRI_PLACES=97, PETRI_TRANSITIONS=100} [2024-06-28 01:21:57,037 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 55 predicate places. [2024-06-28 01:21:57,038 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 100 transitions, 807 flow [2024-06-28 01:21:57,038 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) [2024-06-28 01:21:57,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:57,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:57,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:21:57,038 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:57,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:57,038 INFO L85 PathProgramCache]: Analyzing trace with hash -325430416, now seen corresponding path program 5 times [2024-06-28 01:21:57,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:57,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069967010] [2024-06-28 01:21:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:57,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:57,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:57,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069967010] [2024-06-28 01:21:57,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069967010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:57,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:57,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:57,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662066731] [2024-06-28 01:21:57,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:57,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:57,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:57,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:57,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:57,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:57,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 100 transitions, 807 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:57,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:57,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:57,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:57,957 INFO L124 PetriNetUnfolderBase]: 698/1342 cut-off events. [2024-06-28 01:21:57,957 INFO L125 PetriNetUnfolderBase]: For 7482/7482 co-relation queries the response was YES. [2024-06-28 01:21:57,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5396 conditions, 1342 events. 698/1342 cut-off events. For 7482/7482 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7561 event pairs, 249 based on Foata normal form. 1/1295 useless extension candidates. Maximal degree in co-relation 5353. Up to 1007 conditions per place. [2024-06-28 01:21:57,966 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 72 selfloop transitions, 42 changer transitions 0/122 dead transitions. [2024-06-28 01:21:57,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 122 transitions, 1137 flow [2024-06-28 01:21:57,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:57,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 01:21:57,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2024-06-28 01:21:57,968 INFO L175 Difference]: Start difference. First operand has 97 places, 100 transitions, 807 flow. Second operand 7 states and 129 transitions. [2024-06-28 01:21:57,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 122 transitions, 1137 flow [2024-06-28 01:21:57,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 122 transitions, 1078 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:57,982 INFO L231 Difference]: Finished difference. Result has 99 places, 102 transitions, 867 flow [2024-06-28 01:21:57,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=867, PETRI_PLACES=99, PETRI_TRANSITIONS=102} [2024-06-28 01:21:57,983 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2024-06-28 01:21:57,983 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 102 transitions, 867 flow [2024-06-28 01:21:57,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:57,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:57,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:57,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:21:57,983 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:57,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:57,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1625254321, now seen corresponding path program 3 times [2024-06-28 01:21:57,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:57,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889226218] [2024-06-28 01:21:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:57,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:58,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:58,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889226218] [2024-06-28 01:21:58,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889226218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:58,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:58,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:58,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928060740] [2024-06-28 01:21:58,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:58,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:58,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:58,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:58,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:58,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:21:58,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 102 transitions, 867 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) [2024-06-28 01:21:58,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:58,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:21:58,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:58,942 INFO L124 PetriNetUnfolderBase]: 661/1339 cut-off events. [2024-06-28 01:21:58,942 INFO L125 PetriNetUnfolderBase]: For 7448/7448 co-relation queries the response was YES. [2024-06-28 01:21:58,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5234 conditions, 1339 events. 661/1339 cut-off events. For 7448/7448 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7826 event pairs, 259 based on Foata normal form. 1/1281 useless extension candidates. Maximal degree in co-relation 5190. Up to 982 conditions per place. [2024-06-28 01:21:58,950 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 78 selfloop transitions, 26 changer transitions 0/124 dead transitions. [2024-06-28 01:21:58,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 124 transitions, 1179 flow [2024-06-28 01:21:58,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:58,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 01:21:58,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:21:58,951 INFO L175 Difference]: Start difference. First operand has 99 places, 102 transitions, 867 flow. Second operand 7 states and 133 transitions. [2024-06-28 01:21:58,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 124 transitions, 1179 flow [2024-06-28 01:21:58,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 124 transitions, 1082 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:58,962 INFO L231 Difference]: Finished difference. Result has 101 places, 104 transitions, 847 flow [2024-06-28 01:21:58,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=847, PETRI_PLACES=101, PETRI_TRANSITIONS=104} [2024-06-28 01:21:58,963 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2024-06-28 01:21:58,963 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 104 transitions, 847 flow [2024-06-28 01:21:58,963 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) [2024-06-28 01:21:58,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:58,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:58,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:21:58,963 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:58,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:58,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1625254042, now seen corresponding path program 6 times [2024-06-28 01:21:58,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:58,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630469432] [2024-06-28 01:21:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:58,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:59,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:59,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630469432] [2024-06-28 01:21:59,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630469432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:59,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:59,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:59,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460110711] [2024-06-28 01:21:59,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:59,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:59,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:59,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:59,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:59,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:59,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 104 transitions, 847 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:59,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:59,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:59,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:59,842 INFO L124 PetriNetUnfolderBase]: 710/1377 cut-off events. [2024-06-28 01:21:59,842 INFO L125 PetriNetUnfolderBase]: For 7388/7388 co-relation queries the response was YES. [2024-06-28 01:21:59,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5497 conditions, 1377 events. 710/1377 cut-off events. For 7388/7388 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7762 event pairs, 161 based on Foata normal form. 1/1320 useless extension candidates. Maximal degree in co-relation 5452. Up to 995 conditions per place. [2024-06-28 01:21:59,851 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 75 selfloop transitions, 43 changer transitions 0/126 dead transitions. [2024-06-28 01:21:59,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 126 transitions, 1193 flow [2024-06-28 01:21:59,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 01:21:59,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2024-06-28 01:21:59,852 INFO L175 Difference]: Start difference. First operand has 101 places, 104 transitions, 847 flow. Second operand 7 states and 129 transitions. [2024-06-28 01:21:59,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 126 transitions, 1193 flow [2024-06-28 01:21:59,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 126 transitions, 1132 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:59,862 INFO L231 Difference]: Finished difference. Result has 103 places, 106 transitions, 903 flow [2024-06-28 01:21:59,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=903, PETRI_PLACES=103, PETRI_TRANSITIONS=106} [2024-06-28 01:21:59,862 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2024-06-28 01:21:59,863 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 106 transitions, 903 flow [2024-06-28 01:21:59,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:59,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:59,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:59,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:21:59,863 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:59,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1625580751, now seen corresponding path program 4 times [2024-06-28 01:21:59,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:59,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143828624] [2024-06-28 01:21:59,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:59,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:00,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:00,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:00,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143828624] [2024-06-28 01:22:00,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143828624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:00,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:00,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:22:00,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881377818] [2024-06-28 01:22:00,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:00,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:22:00,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:00,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:22:00,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:22:00,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:22:00,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 106 transitions, 903 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) [2024-06-28 01:22:00,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:00,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:22:00,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:00,920 INFO L124 PetriNetUnfolderBase]: 662/1340 cut-off events. [2024-06-28 01:22:00,920 INFO L125 PetriNetUnfolderBase]: For 7811/7811 co-relation queries the response was YES. [2024-06-28 01:22:00,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5319 conditions, 1340 events. 662/1340 cut-off events. For 7811/7811 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7844 event pairs, 259 based on Foata normal form. 1/1285 useless extension candidates. Maximal degree in co-relation 5273. Up to 937 conditions per place. [2024-06-28 01:22:00,929 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 76 selfloop transitions, 33 changer transitions 0/130 dead transitions. [2024-06-28 01:22:00,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 130 transitions, 1239 flow [2024-06-28 01:22:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:22:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:22:00,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 01:22:00,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037593984962406 [2024-06-28 01:22:00,930 INFO L175 Difference]: Start difference. First operand has 103 places, 106 transitions, 903 flow. Second operand 7 states and 134 transitions. [2024-06-28 01:22:00,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 130 transitions, 1239 flow [2024-06-28 01:22:00,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 130 transitions, 1138 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:00,942 INFO L231 Difference]: Finished difference. Result has 106 places, 110 transitions, 922 flow [2024-06-28 01:22:00,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=922, PETRI_PLACES=106, PETRI_TRANSITIONS=110} [2024-06-28 01:22:00,942 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2024-06-28 01:22:00,942 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 110 transitions, 922 flow [2024-06-28 01:22:00,943 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) [2024-06-28 01:22:00,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:00,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:00,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:22:00,943 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:00,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash -385159483, now seen corresponding path program 1 times [2024-06-28 01:22:00,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:00,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436174137] [2024-06-28 01:22:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:00,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:01,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436174137] [2024-06-28 01:22:01,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436174137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:01,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:01,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:01,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188778807] [2024-06-28 01:22:01,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:01,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:01,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:01,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:01,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:01,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:01,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 110 transitions, 922 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) [2024-06-28 01:22:01,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:01,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:01,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:01,891 INFO L124 PetriNetUnfolderBase]: 742/1434 cut-off events. [2024-06-28 01:22:01,892 INFO L125 PetriNetUnfolderBase]: For 9621/9621 co-relation queries the response was YES. [2024-06-28 01:22:01,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5998 conditions, 1434 events. 742/1434 cut-off events. For 9621/9621 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8275 event pairs, 262 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 5950. Up to 1108 conditions per place. [2024-06-28 01:22:01,900 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 103 selfloop transitions, 38 changer transitions 0/149 dead transitions. [2024-06-28 01:22:01,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 149 transitions, 1380 flow [2024-06-28 01:22:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:01,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 01:22:01,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-28 01:22:01,901 INFO L175 Difference]: Start difference. First operand has 106 places, 110 transitions, 922 flow. Second operand 9 states and 166 transitions. [2024-06-28 01:22:01,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 149 transitions, 1380 flow [2024-06-28 01:22:01,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 149 transitions, 1336 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:01,913 INFO L231 Difference]: Finished difference. Result has 114 places, 120 transitions, 1065 flow [2024-06-28 01:22:01,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1065, PETRI_PLACES=114, PETRI_TRANSITIONS=120} [2024-06-28 01:22:01,914 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2024-06-28 01:22:01,914 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 120 transitions, 1065 flow [2024-06-28 01:22:01,914 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) [2024-06-28 01:22:01,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:01,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:01,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:22:01,914 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:01,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:01,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1185586049, now seen corresponding path program 2 times [2024-06-28 01:22:01,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:01,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477766751] [2024-06-28 01:22:01,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:01,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:02,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:02,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477766751] [2024-06-28 01:22:02,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477766751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:02,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:02,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:02,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698551976] [2024-06-28 01:22:02,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:02,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:02,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:02,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:02,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:02,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:02,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 120 transitions, 1065 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) [2024-06-28 01:22:02,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:02,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:02,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:02,997 INFO L124 PetriNetUnfolderBase]: 791/1532 cut-off events. [2024-06-28 01:22:02,997 INFO L125 PetriNetUnfolderBase]: For 12212/12212 co-relation queries the response was YES. [2024-06-28 01:22:03,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6879 conditions, 1532 events. 791/1532 cut-off events. For 12212/12212 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8993 event pairs, 277 based on Foata normal form. 2/1480 useless extension candidates. Maximal degree in co-relation 6827. Up to 1167 conditions per place. [2024-06-28 01:22:03,006 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 103 selfloop transitions, 47 changer transitions 0/158 dead transitions. [2024-06-28 01:22:03,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 158 transitions, 1592 flow [2024-06-28 01:22:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:03,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:03,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 01:22:03,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-28 01:22:03,007 INFO L175 Difference]: Start difference. First operand has 114 places, 120 transitions, 1065 flow. Second operand 9 states and 166 transitions. [2024-06-28 01:22:03,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 158 transitions, 1592 flow [2024-06-28 01:22:03,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 158 transitions, 1477 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:03,022 INFO L231 Difference]: Finished difference. Result has 120 places, 131 transitions, 1201 flow [2024-06-28 01:22:03,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1201, PETRI_PLACES=120, PETRI_TRANSITIONS=131} [2024-06-28 01:22:03,022 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 78 predicate places. [2024-06-28 01:22:03,022 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 131 transitions, 1201 flow [2024-06-28 01:22:03,023 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) [2024-06-28 01:22:03,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:03,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:03,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:22:03,023 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:03,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:03,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1190226749, now seen corresponding path program 3 times [2024-06-28 01:22:03,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:03,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654836191] [2024-06-28 01:22:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:03,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:03,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:03,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654836191] [2024-06-28 01:22:03,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654836191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:03,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:03,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:03,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069010123] [2024-06-28 01:22:03,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:03,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:03,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:03,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:03,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:03,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:03,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 131 transitions, 1201 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) [2024-06-28 01:22:03,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:03,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:03,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:04,116 INFO L124 PetriNetUnfolderBase]: 813/1577 cut-off events. [2024-06-28 01:22:04,116 INFO L125 PetriNetUnfolderBase]: For 13338/13338 co-relation queries the response was YES. [2024-06-28 01:22:04,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7241 conditions, 1577 events. 813/1577 cut-off events. For 13338/13338 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9354 event pairs, 265 based on Foata normal form. 2/1522 useless extension candidates. Maximal degree in co-relation 7186. Up to 1141 conditions per place. [2024-06-28 01:22:04,127 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 102 selfloop transitions, 53 changer transitions 0/163 dead transitions. [2024-06-28 01:22:04,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 163 transitions, 1669 flow [2024-06-28 01:22:04,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:04,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:22:04,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:22:04,145 INFO L175 Difference]: Start difference. First operand has 120 places, 131 transitions, 1201 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:22:04,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 163 transitions, 1669 flow [2024-06-28 01:22:04,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 163 transitions, 1601 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:04,163 INFO L231 Difference]: Finished difference. Result has 125 places, 133 transitions, 1277 flow [2024-06-28 01:22:04,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1277, PETRI_PLACES=125, PETRI_TRANSITIONS=133} [2024-06-28 01:22:04,163 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2024-06-28 01:22:04,163 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 133 transitions, 1277 flow [2024-06-28 01:22:04,163 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) [2024-06-28 01:22:04,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:04,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:04,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:22:04,164 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:04,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:04,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1190264197, now seen corresponding path program 1 times [2024-06-28 01:22:04,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:04,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82197539] [2024-06-28 01:22:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:04,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:04,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:04,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82197539] [2024-06-28 01:22:04,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82197539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:04,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:04,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:04,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115157011] [2024-06-28 01:22:04,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:04,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:04,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:04,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:04,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:04,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:04,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 133 transitions, 1277 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) [2024-06-28 01:22:04,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:04,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:04,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:05,334 INFO L124 PetriNetUnfolderBase]: 824/1593 cut-off events. [2024-06-28 01:22:05,334 INFO L125 PetriNetUnfolderBase]: For 14303/14303 co-relation queries the response was YES. [2024-06-28 01:22:05,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7446 conditions, 1593 events. 824/1593 cut-off events. For 14303/14303 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9418 event pairs, 278 based on Foata normal form. 1/1539 useless extension candidates. Maximal degree in co-relation 7390. Up to 1255 conditions per place. [2024-06-28 01:22:05,344 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 118 selfloop transitions, 37 changer transitions 0/163 dead transitions. [2024-06-28 01:22:05,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 163 transitions, 1727 flow [2024-06-28 01:22:05,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:05,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 01:22:05,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-28 01:22:05,345 INFO L175 Difference]: Start difference. First operand has 125 places, 133 transitions, 1277 flow. Second operand 9 states and 163 transitions. [2024-06-28 01:22:05,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 163 transitions, 1727 flow [2024-06-28 01:22:05,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 163 transitions, 1601 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:05,362 INFO L231 Difference]: Finished difference. Result has 127 places, 135 transitions, 1253 flow [2024-06-28 01:22:05,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1253, PETRI_PLACES=127, PETRI_TRANSITIONS=135} [2024-06-28 01:22:05,364 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2024-06-28 01:22:05,364 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 135 transitions, 1253 flow [2024-06-28 01:22:05,364 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) [2024-06-28 01:22:05,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:05,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:05,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:22:05,365 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:05,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:05,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1341651963, now seen corresponding path program 4 times [2024-06-28 01:22:05,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:05,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180334865] [2024-06-28 01:22:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:05,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:05,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:05,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180334865] [2024-06-28 01:22:05,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180334865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:05,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:05,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:05,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85807755] [2024-06-28 01:22:05,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:05,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:05,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:05,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:05,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:06,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:06,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 135 transitions, 1253 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) [2024-06-28 01:22:06,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:06,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:06,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:06,364 INFO L124 PetriNetUnfolderBase]: 891/1695 cut-off events. [2024-06-28 01:22:06,364 INFO L125 PetriNetUnfolderBase]: For 15411/15411 co-relation queries the response was YES. [2024-06-28 01:22:06,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7945 conditions, 1695 events. 891/1695 cut-off events. For 15411/15411 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10149 event pairs, 235 based on Foata normal form. 2/1642 useless extension candidates. Maximal degree in co-relation 7888. Up to 1304 conditions per place. [2024-06-28 01:22:06,389 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 111 selfloop transitions, 57 changer transitions 0/176 dead transitions. [2024-06-28 01:22:06,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 176 transitions, 1830 flow [2024-06-28 01:22:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:06,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 01:22:06,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-28 01:22:06,397 INFO L175 Difference]: Start difference. First operand has 127 places, 135 transitions, 1253 flow. Second operand 9 states and 166 transitions. [2024-06-28 01:22:06,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 176 transitions, 1830 flow [2024-06-28 01:22:06,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 176 transitions, 1746 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:06,424 INFO L231 Difference]: Finished difference. Result has 130 places, 151 transitions, 1470 flow [2024-06-28 01:22:06,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1470, PETRI_PLACES=130, PETRI_TRANSITIONS=151} [2024-06-28 01:22:06,424 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2024-06-28 01:22:06,424 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 151 transitions, 1470 flow [2024-06-28 01:22:06,425 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) [2024-06-28 01:22:06,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:06,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:06,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:22:06,425 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:06,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:06,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1341501055, now seen corresponding path program 2 times [2024-06-28 01:22:06,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:06,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989977833] [2024-06-28 01:22:06,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:06,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:07,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:07,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989977833] [2024-06-28 01:22:07,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989977833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:07,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:07,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:07,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812935962] [2024-06-28 01:22:07,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:07,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:07,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:07,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:07,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:07,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:07,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 151 transitions, 1470 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) [2024-06-28 01:22:07,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:07,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:07,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:07,552 INFO L124 PetriNetUnfolderBase]: 909/1759 cut-off events. [2024-06-28 01:22:07,553 INFO L125 PetriNetUnfolderBase]: For 17080/17080 co-relation queries the response was YES. [2024-06-28 01:22:07,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8355 conditions, 1759 events. 909/1759 cut-off events. For 17080/17080 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10686 event pairs, 296 based on Foata normal form. 1/1698 useless extension candidates. Maximal degree in co-relation 8296. Up to 1384 conditions per place. [2024-06-28 01:22:07,562 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 135 selfloop transitions, 38 changer transitions 0/181 dead transitions. [2024-06-28 01:22:07,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 181 transitions, 1958 flow [2024-06-28 01:22:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 01:22:07,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-28 01:22:07,564 INFO L175 Difference]: Start difference. First operand has 130 places, 151 transitions, 1470 flow. Second operand 9 states and 163 transitions. [2024-06-28 01:22:07,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 181 transitions, 1958 flow [2024-06-28 01:22:07,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 181 transitions, 1880 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:07,589 INFO L231 Difference]: Finished difference. Result has 135 places, 155 transitions, 1514 flow [2024-06-28 01:22:07,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1514, PETRI_PLACES=135, PETRI_TRANSITIONS=155} [2024-06-28 01:22:07,589 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2024-06-28 01:22:07,590 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 155 transitions, 1514 flow [2024-06-28 01:22:07,590 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) [2024-06-28 01:22:07,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:07,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:07,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:22:07,590 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:07,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:07,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1341501303, now seen corresponding path program 5 times [2024-06-28 01:22:07,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:07,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134727254] [2024-06-28 01:22:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:07,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:08,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:08,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134727254] [2024-06-28 01:22:08,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134727254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:08,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:08,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:08,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274521223] [2024-06-28 01:22:08,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:08,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:08,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:08,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:08,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:08,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:08,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 155 transitions, 1514 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) [2024-06-28 01:22:08,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:08,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:08,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:08,557 INFO L124 PetriNetUnfolderBase]: 945/1807 cut-off events. [2024-06-28 01:22:08,557 INFO L125 PetriNetUnfolderBase]: For 18610/18610 co-relation queries the response was YES. [2024-06-28 01:22:08,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8691 conditions, 1807 events. 945/1807 cut-off events. For 18610/18610 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11068 event pairs, 239 based on Foata normal form. 2/1748 useless extension candidates. Maximal degree in co-relation 8631. Up to 1338 conditions per place. [2024-06-28 01:22:08,568 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 116 selfloop transitions, 63 changer transitions 0/187 dead transitions. [2024-06-28 01:22:08,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 187 transitions, 2036 flow [2024-06-28 01:22:08,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:08,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:08,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 01:22:08,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-28 01:22:08,569 INFO L175 Difference]: Start difference. First operand has 135 places, 155 transitions, 1514 flow. Second operand 9 states and 169 transitions. [2024-06-28 01:22:08,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 187 transitions, 2036 flow [2024-06-28 01:22:08,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 187 transitions, 1952 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:08,590 INFO L231 Difference]: Finished difference. Result has 137 places, 159 transitions, 1616 flow [2024-06-28 01:22:08,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1616, PETRI_PLACES=137, PETRI_TRANSITIONS=159} [2024-06-28 01:22:08,595 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 95 predicate places. [2024-06-28 01:22:08,595 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 159 transitions, 1616 flow [2024-06-28 01:22:08,596 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) [2024-06-28 01:22:08,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:08,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:08,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:22:08,596 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:08,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:08,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1335908283, now seen corresponding path program 6 times [2024-06-28 01:22:08,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:08,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59037758] [2024-06-28 01:22:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:08,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:09,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:09,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59037758] [2024-06-28 01:22:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59037758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:09,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:09,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:09,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860670017] [2024-06-28 01:22:09,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:09,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:09,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:09,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:09,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:09,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:09,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 159 transitions, 1616 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) [2024-06-28 01:22:09,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:09,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:09,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:09,666 INFO L124 PetriNetUnfolderBase]: 967/1848 cut-off events. [2024-06-28 01:22:09,666 INFO L125 PetriNetUnfolderBase]: For 21179/21179 co-relation queries the response was YES. [2024-06-28 01:22:09,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9192 conditions, 1848 events. 967/1848 cut-off events. For 21179/21179 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11373 event pairs, 231 based on Foata normal form. 2/1788 useless extension candidates. Maximal degree in co-relation 9131. Up to 1238 conditions per place. [2024-06-28 01:22:09,679 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 107 selfloop transitions, 76 changer transitions 0/191 dead transitions. [2024-06-28 01:22:09,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 191 transitions, 2164 flow [2024-06-28 01:22:09,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 01:22:09,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-28 01:22:09,688 INFO L175 Difference]: Start difference. First operand has 137 places, 159 transitions, 1616 flow. Second operand 9 states and 169 transitions. [2024-06-28 01:22:09,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 191 transitions, 2164 flow [2024-06-28 01:22:09,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 191 transitions, 2016 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:09,713 INFO L231 Difference]: Finished difference. Result has 139 places, 161 transitions, 1669 flow [2024-06-28 01:22:09,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1669, PETRI_PLACES=139, PETRI_TRANSITIONS=161} [2024-06-28 01:22:09,714 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 97 predicate places. [2024-06-28 01:22:09,714 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 161 transitions, 1669 flow [2024-06-28 01:22:09,715 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) [2024-06-28 01:22:09,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:09,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:09,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:22:09,715 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:09,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:09,715 INFO L85 PathProgramCache]: Analyzing trace with hash -310799725, now seen corresponding path program 3 times [2024-06-28 01:22:09,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:09,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597741786] [2024-06-28 01:22:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:09,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:10,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:10,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:10,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597741786] [2024-06-28 01:22:10,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597741786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:10,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:10,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:10,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792513601] [2024-06-28 01:22:10,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:10,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:10,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:10,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:10,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:10,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:10,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 161 transitions, 1669 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) [2024-06-28 01:22:10,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:10,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:10,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:10,855 INFO L124 PetriNetUnfolderBase]: 978/1908 cut-off events. [2024-06-28 01:22:10,855 INFO L125 PetriNetUnfolderBase]: For 22366/22366 co-relation queries the response was YES. [2024-06-28 01:22:10,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9446 conditions, 1908 events. 978/1908 cut-off events. For 22366/22366 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11911 event pairs, 296 based on Foata normal form. 1/1838 useless extension candidates. Maximal degree in co-relation 9384. Up to 1460 conditions per place. [2024-06-28 01:22:10,868 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 141 selfloop transitions, 42 changer transitions 0/191 dead transitions. [2024-06-28 01:22:10,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 191 transitions, 2195 flow [2024-06-28 01:22:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:10,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:22:10,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-28 01:22:10,872 INFO L175 Difference]: Start difference. First operand has 139 places, 161 transitions, 1669 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:22:10,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 191 transitions, 2195 flow [2024-06-28 01:22:10,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 191 transitions, 2010 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:10,899 INFO L231 Difference]: Finished difference. Result has 141 places, 163 transitions, 1603 flow [2024-06-28 01:22:10,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1603, PETRI_PLACES=141, PETRI_TRANSITIONS=163} [2024-06-28 01:22:10,899 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2024-06-28 01:22:10,899 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 163 transitions, 1603 flow [2024-06-28 01:22:10,900 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) [2024-06-28 01:22:10,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:10,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:10,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:22:10,900 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:10,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:10,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1404882633, now seen corresponding path program 1 times [2024-06-28 01:22:10,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:10,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481220390] [2024-06-28 01:22:10,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:10,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:11,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:11,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:11,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481220390] [2024-06-28 01:22:11,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481220390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:11,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:11,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:11,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57893794] [2024-06-28 01:22:11,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:11,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:11,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:11,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:11,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:11,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:22:11,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 163 transitions, 1603 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) [2024-06-28 01:22:11,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:11,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:22:11,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:12,197 INFO L124 PetriNetUnfolderBase]: 924/1815 cut-off events. [2024-06-28 01:22:12,198 INFO L125 PetriNetUnfolderBase]: For 21768/21818 co-relation queries the response was YES. [2024-06-28 01:22:12,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8705 conditions, 1815 events. 924/1815 cut-off events. For 21768/21818 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11368 event pairs, 319 based on Foata normal form. 40/1786 useless extension candidates. Maximal degree in co-relation 8642. Up to 1380 conditions per place. [2024-06-28 01:22:12,209 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 142 selfloop transitions, 26 changer transitions 0/193 dead transitions. [2024-06-28 01:22:12,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 193 transitions, 2091 flow [2024-06-28 01:22:12,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:12,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 01:22:12,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-28 01:22:12,211 INFO L175 Difference]: Start difference. First operand has 141 places, 163 transitions, 1603 flow. Second operand 9 states and 169 transitions. [2024-06-28 01:22:12,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 193 transitions, 2091 flow [2024-06-28 01:22:12,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 193 transitions, 1988 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:12,235 INFO L231 Difference]: Finished difference. Result has 143 places, 165 transitions, 1579 flow [2024-06-28 01:22:12,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1579, PETRI_PLACES=143, PETRI_TRANSITIONS=165} [2024-06-28 01:22:12,236 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2024-06-28 01:22:12,236 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 165 transitions, 1579 flow [2024-06-28 01:22:12,236 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) [2024-06-28 01:22:12,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:12,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:12,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:22:12,236 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:12,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1404882943, now seen corresponding path program 4 times [2024-06-28 01:22:12,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:12,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917028554] [2024-06-28 01:22:12,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:12,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:12,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:12,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917028554] [2024-06-28 01:22:12,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917028554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:12,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:12,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:12,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595440080] [2024-06-28 01:22:12,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:12,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:12,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:12,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:12,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:12,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:12,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 165 transitions, 1579 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) [2024-06-28 01:22:12,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:12,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:12,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:13,364 INFO L124 PetriNetUnfolderBase]: 1000/1927 cut-off events. [2024-06-28 01:22:13,365 INFO L125 PetriNetUnfolderBase]: For 22554/22554 co-relation queries the response was YES. [2024-06-28 01:22:13,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9434 conditions, 1927 events. 1000/1927 cut-off events. For 22554/22554 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11925 event pairs, 291 based on Foata normal form. 1/1861 useless extension candidates. Maximal degree in co-relation 9370. Up to 1439 conditions per place. [2024-06-28 01:22:13,378 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 137 selfloop transitions, 50 changer transitions 0/195 dead transitions. [2024-06-28 01:22:13,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 195 transitions, 2117 flow [2024-06-28 01:22:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:13,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:22:13,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-28 01:22:13,380 INFO L175 Difference]: Start difference. First operand has 143 places, 165 transitions, 1579 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:22:13,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 195 transitions, 2117 flow [2024-06-28 01:22:13,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 195 transitions, 2054 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:13,406 INFO L231 Difference]: Finished difference. Result has 145 places, 167 transitions, 1655 flow [2024-06-28 01:22:13,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1655, PETRI_PLACES=145, PETRI_TRANSITIONS=167} [2024-06-28 01:22:13,407 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-06-28 01:22:13,407 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 167 transitions, 1655 flow [2024-06-28 01:22:13,407 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) [2024-06-28 01:22:13,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:13,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:13,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:22:13,408 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:13,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:13,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1504006923, now seen corresponding path program 7 times [2024-06-28 01:22:13,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:13,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395927366] [2024-06-28 01:22:13,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:13,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:14,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:14,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395927366] [2024-06-28 01:22:14,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395927366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:14,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:14,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:14,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201609866] [2024-06-28 01:22:14,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:14,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:14,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:14,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:14,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:14,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:14,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 167 transitions, 1655 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) [2024-06-28 01:22:14,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:14,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:14,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:14,743 INFO L124 PetriNetUnfolderBase]: 1084/2079 cut-off events. [2024-06-28 01:22:14,744 INFO L125 PetriNetUnfolderBase]: For 25810/25810 co-relation queries the response was YES. [2024-06-28 01:22:14,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10434 conditions, 2079 events. 1084/2079 cut-off events. For 25810/25810 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13198 event pairs, 230 based on Foata normal form. 2/2007 useless extension candidates. Maximal degree in co-relation 10369. Up to 1582 conditions per place. [2024-06-28 01:22:14,758 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 133 selfloop transitions, 71 changer transitions 0/212 dead transitions. [2024-06-28 01:22:14,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 212 transitions, 2440 flow [2024-06-28 01:22:14,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:14,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:14,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:22:14,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-06-28 01:22:14,759 INFO L175 Difference]: Start difference. First operand has 145 places, 167 transitions, 1655 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:22:14,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 212 transitions, 2440 flow [2024-06-28 01:22:14,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 212 transitions, 2303 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:14,789 INFO L231 Difference]: Finished difference. Result has 148 places, 192 transitions, 2008 flow [2024-06-28 01:22:14,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2008, PETRI_PLACES=148, PETRI_TRANSITIONS=192} [2024-06-28 01:22:14,789 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 106 predicate places. [2024-06-28 01:22:14,789 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 192 transitions, 2008 flow [2024-06-28 01:22:14,790 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) [2024-06-28 01:22:14,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:14,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:14,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:22:14,790 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:14,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:14,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2050015495, now seen corresponding path program 8 times [2024-06-28 01:22:14,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:14,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720422443] [2024-06-28 01:22:14,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:14,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:15,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:15,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720422443] [2024-06-28 01:22:15,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720422443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:15,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:15,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:15,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748473758] [2024-06-28 01:22:15,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:15,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:15,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:15,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:15,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:15,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:15,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 192 transitions, 2008 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) [2024-06-28 01:22:15,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:15,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:15,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:15,944 INFO L124 PetriNetUnfolderBase]: 1106/2167 cut-off events. [2024-06-28 01:22:15,944 INFO L125 PetriNetUnfolderBase]: For 29407/29407 co-relation queries the response was YES. [2024-06-28 01:22:15,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10974 conditions, 2167 events. 1106/2167 cut-off events. For 29407/29407 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13998 event pairs, 292 based on Foata normal form. 2/2086 useless extension candidates. Maximal degree in co-relation 10907. Up to 1404 conditions per place. [2024-06-28 01:22:15,959 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 118 selfloop transitions, 95 changer transitions 0/221 dead transitions. [2024-06-28 01:22:15,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 221 transitions, 2604 flow [2024-06-28 01:22:15,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:15,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 01:22:15,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-28 01:22:15,973 INFO L175 Difference]: Start difference. First operand has 148 places, 192 transitions, 2008 flow. Second operand 8 states and 150 transitions. [2024-06-28 01:22:15,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 221 transitions, 2604 flow [2024-06-28 01:22:16,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 221 transitions, 2509 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:16,006 INFO L231 Difference]: Finished difference. Result has 153 places, 194 transitions, 2169 flow [2024-06-28 01:22:16,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2169, PETRI_PLACES=153, PETRI_TRANSITIONS=194} [2024-06-28 01:22:16,007 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 111 predicate places. [2024-06-28 01:22:16,007 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 194 transitions, 2169 flow [2024-06-28 01:22:16,007 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) [2024-06-28 01:22:16,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:16,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:16,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:22:16,007 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:16,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2050015743, now seen corresponding path program 5 times [2024-06-28 01:22:16,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:16,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182888270] [2024-06-28 01:22:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:16,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:16,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:16,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182888270] [2024-06-28 01:22:16,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182888270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:16,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:16,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:16,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778378500] [2024-06-28 01:22:16,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:16,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:16,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:16,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:16,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:16,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 194 transitions, 2169 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) [2024-06-28 01:22:16,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:16,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:16,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:17,297 INFO L124 PetriNetUnfolderBase]: 1145/2195 cut-off events. [2024-06-28 01:22:17,297 INFO L125 PetriNetUnfolderBase]: For 31254/31254 co-relation queries the response was YES. [2024-06-28 01:22:17,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11571 conditions, 2195 events. 1145/2195 cut-off events. For 31254/31254 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14116 event pairs, 238 based on Foata normal form. 1/2120 useless extension candidates. Maximal degree in co-relation 11502. Up to 1736 conditions per place. [2024-06-28 01:22:17,312 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 170 selfloop transitions, 47 changer transitions 0/225 dead transitions. [2024-06-28 01:22:17,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 225 transitions, 2807 flow [2024-06-28 01:22:17,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:17,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:22:17,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-06-28 01:22:17,313 INFO L175 Difference]: Start difference. First operand has 153 places, 194 transitions, 2169 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:22:17,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 225 transitions, 2807 flow [2024-06-28 01:22:17,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 225 transitions, 2575 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:17,349 INFO L231 Difference]: Finished difference. Result has 157 places, 204 transitions, 2181 flow [2024-06-28 01:22:17,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2181, PETRI_PLACES=157, PETRI_TRANSITIONS=204} [2024-06-28 01:22:17,349 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2024-06-28 01:22:17,349 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 204 transitions, 2181 flow [2024-06-28 01:22:17,350 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) [2024-06-28 01:22:17,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:17,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:17,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:22:17,350 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:17,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:17,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1441831209, now seen corresponding path program 9 times [2024-06-28 01:22:17,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:17,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849536225] [2024-06-28 01:22:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:17,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:17,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:17,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849536225] [2024-06-28 01:22:17,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849536225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:17,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:17,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:17,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214821659] [2024-06-28 01:22:17,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:17,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:17,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:17,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:17,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:18,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:18,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 204 transitions, 2181 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) [2024-06-28 01:22:18,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:18,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:18,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:18,522 INFO L124 PetriNetUnfolderBase]: 1216/2343 cut-off events. [2024-06-28 01:22:18,522 INFO L125 PetriNetUnfolderBase]: For 29319/29319 co-relation queries the response was YES. [2024-06-28 01:22:18,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11799 conditions, 2343 events. 1216/2343 cut-off events. For 29319/29319 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15388 event pairs, 241 based on Foata normal form. 2/2261 useless extension candidates. Maximal degree in co-relation 11728. Up to 1651 conditions per place. [2024-06-28 01:22:18,540 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 144 selfloop transitions, 87 changer transitions 0/239 dead transitions. [2024-06-28 01:22:18,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 239 transitions, 2867 flow [2024-06-28 01:22:18,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:18,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:22:18,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-28 01:22:18,542 INFO L175 Difference]: Start difference. First operand has 157 places, 204 transitions, 2181 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:22:18,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 239 transitions, 2867 flow [2024-06-28 01:22:18,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 239 transitions, 2756 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:18,579 INFO L231 Difference]: Finished difference. Result has 162 places, 214 transitions, 2408 flow [2024-06-28 01:22:18,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2408, PETRI_PLACES=162, PETRI_TRANSITIONS=214} [2024-06-28 01:22:18,580 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2024-06-28 01:22:18,580 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 214 transitions, 2408 flow [2024-06-28 01:22:18,580 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) [2024-06-28 01:22:18,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:18,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:18,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:22:18,581 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:18,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:18,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1441830961, now seen corresponding path program 6 times [2024-06-28 01:22:18,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:18,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639849708] [2024-06-28 01:22:18,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:18,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:19,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:19,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639849708] [2024-06-28 01:22:19,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639849708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:19,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:19,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:19,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237694535] [2024-06-28 01:22:19,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:19,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:19,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:19,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:19,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:19,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:19,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 214 transitions, 2408 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) [2024-06-28 01:22:19,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:19,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:19,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:19,907 INFO L124 PetriNetUnfolderBase]: 1234/2390 cut-off events. [2024-06-28 01:22:19,907 INFO L125 PetriNetUnfolderBase]: For 31912/31912 co-relation queries the response was YES. [2024-06-28 01:22:19,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12437 conditions, 2390 events. 1234/2390 cut-off events. For 31912/31912 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15829 event pairs, 241 based on Foata normal form. 1/2303 useless extension candidates. Maximal degree in co-relation 12363. Up to 1850 conditions per place. [2024-06-28 01:22:19,925 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 182 selfloop transitions, 51 changer transitions 0/241 dead transitions. [2024-06-28 01:22:19,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 241 transitions, 3036 flow [2024-06-28 01:22:19,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:19,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:19,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:22:19,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-06-28 01:22:19,928 INFO L175 Difference]: Start difference. First operand has 162 places, 214 transitions, 2408 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:22:19,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 241 transitions, 3036 flow [2024-06-28 01:22:19,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 241 transitions, 2859 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:19,970 INFO L231 Difference]: Finished difference. Result has 165 places, 218 transitions, 2395 flow [2024-06-28 01:22:19,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2231, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2395, PETRI_PLACES=165, PETRI_TRANSITIONS=218} [2024-06-28 01:22:19,971 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 123 predicate places. [2024-06-28 01:22:19,971 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 218 transitions, 2395 flow [2024-06-28 01:22:19,971 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) [2024-06-28 01:22:19,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:19,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:19,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:22:19,972 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:19,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1498398775, now seen corresponding path program 7 times [2024-06-28 01:22:19,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:19,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210830196] [2024-06-28 01:22:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:19,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:20,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:20,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210830196] [2024-06-28 01:22:20,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210830196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:20,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:20,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:20,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331897235] [2024-06-28 01:22:20,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:20,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:20,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:20,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:20,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:20,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:20,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 218 transitions, 2395 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) [2024-06-28 01:22:20,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:20,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:20,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:21,068 INFO L124 PetriNetUnfolderBase]: 1245/2414 cut-off events. [2024-06-28 01:22:21,068 INFO L125 PetriNetUnfolderBase]: For 32749/32749 co-relation queries the response was YES. [2024-06-28 01:22:21,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12452 conditions, 2414 events. 1245/2414 cut-off events. For 32749/32749 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15856 event pairs, 296 based on Foata normal form. 1/2328 useless extension candidates. Maximal degree in co-relation 12377. Up to 1711 conditions per place. [2024-06-28 01:22:21,086 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 159 selfloop transitions, 78 changer transitions 0/245 dead transitions. [2024-06-28 01:22:21,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 245 transitions, 3037 flow [2024-06-28 01:22:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:21,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 01:22:21,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355263157894735 [2024-06-28 01:22:21,088 INFO L175 Difference]: Start difference. First operand has 165 places, 218 transitions, 2395 flow. Second operand 8 states and 147 transitions. [2024-06-28 01:22:21,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 245 transitions, 3037 flow [2024-06-28 01:22:21,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 245 transitions, 2911 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:21,135 INFO L231 Difference]: Finished difference. Result has 166 places, 220 transitions, 2479 flow [2024-06-28 01:22:21,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2479, PETRI_PLACES=166, PETRI_TRANSITIONS=220} [2024-06-28 01:22:21,135 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 124 predicate places. [2024-06-28 01:22:21,136 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 220 transitions, 2479 flow [2024-06-28 01:22:21,136 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) [2024-06-28 01:22:21,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:21,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:21,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:22:21,136 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:21,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:21,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1441822281, now seen corresponding path program 2 times [2024-06-28 01:22:21,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:21,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751893260] [2024-06-28 01:22:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:21,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:21,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:21,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751893260] [2024-06-28 01:22:21,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751893260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:21,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:21,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:21,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249193596] [2024-06-28 01:22:21,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:21,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:21,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:21,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:21,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:21,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:22:21,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 220 transitions, 2479 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) [2024-06-28 01:22:21,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:21,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:22:21,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:22,466 INFO L124 PetriNetUnfolderBase]: 1178/2325 cut-off events. [2024-06-28 01:22:22,466 INFO L125 PetriNetUnfolderBase]: For 34837/34904 co-relation queries the response was YES. [2024-06-28 01:22:22,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11960 conditions, 2325 events. 1178/2325 cut-off events. For 34837/34904 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15511 event pairs, 340 based on Foata normal form. 46/2276 useless extension candidates. Maximal degree in co-relation 11884. Up to 1691 conditions per place. [2024-06-28 01:22:22,490 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 181 selfloop transitions, 29 changer transitions 0/248 dead transitions. [2024-06-28 01:22:22,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 248 transitions, 3051 flow [2024-06-28 01:22:22,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:22,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 01:22:22,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:22:22,491 INFO L175 Difference]: Start difference. First operand has 166 places, 220 transitions, 2479 flow. Second operand 8 states and 152 transitions. [2024-06-28 01:22:22,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 248 transitions, 3051 flow [2024-06-28 01:22:22,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 248 transitions, 2861 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:22,541 INFO L231 Difference]: Finished difference. Result has 168 places, 222 transitions, 2380 flow [2024-06-28 01:22:22,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2289, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2380, PETRI_PLACES=168, PETRI_TRANSITIONS=222} [2024-06-28 01:22:22,542 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 126 predicate places. [2024-06-28 01:22:22,542 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 222 transitions, 2380 flow [2024-06-28 01:22:22,542 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) [2024-06-28 01:22:22,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:22,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:22,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:22:22,542 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:22,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:22,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1156722411, now seen corresponding path program 3 times [2024-06-28 01:22:22,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:22,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717371589] [2024-06-28 01:22:22,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:22,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:23,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:23,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717371589] [2024-06-28 01:22:23,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717371589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:23,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:23,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:23,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574984388] [2024-06-28 01:22:23,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:23,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:23,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:23,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:23,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:23,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:22:23,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 222 transitions, 2380 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) [2024-06-28 01:22:23,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:23,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:22:23,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:23,733 INFO L124 PetriNetUnfolderBase]: 1184/2377 cut-off events. [2024-06-28 01:22:23,734 INFO L125 PetriNetUnfolderBase]: For 33717/33799 co-relation queries the response was YES. [2024-06-28 01:22:23,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11885 conditions, 2377 events. 1184/2377 cut-off events. For 33717/33799 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15968 event pairs, 329 based on Foata normal form. 55/2327 useless extension candidates. Maximal degree in co-relation 11808. Up to 1727 conditions per place. [2024-06-28 01:22:23,752 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 183 selfloop transitions, 28 changer transitions 0/249 dead transitions. [2024-06-28 01:22:23,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 249 transitions, 2964 flow [2024-06-28 01:22:23,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:23,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 01:22:23,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-06-28 01:22:23,760 INFO L175 Difference]: Start difference. First operand has 168 places, 222 transitions, 2380 flow. Second operand 8 states and 151 transitions. [2024-06-28 01:22:23,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 249 transitions, 2964 flow [2024-06-28 01:22:23,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 249 transitions, 2895 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:23,805 INFO L231 Difference]: Finished difference. Result has 170 places, 224 transitions, 2400 flow [2024-06-28 01:22:23,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2400, PETRI_PLACES=170, PETRI_TRANSITIONS=224} [2024-06-28 01:22:23,806 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 128 predicate places. [2024-06-28 01:22:23,806 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 224 transitions, 2400 flow [2024-06-28 01:22:23,806 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) [2024-06-28 01:22:23,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:23,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:23,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:22:23,807 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:23,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:23,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1156722721, now seen corresponding path program 8 times [2024-06-28 01:22:23,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:23,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170775262] [2024-06-28 01:22:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:23,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:24,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:24,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170775262] [2024-06-28 01:22:24,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170775262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:24,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:24,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:24,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762288724] [2024-06-28 01:22:24,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:24,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:24,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:24,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:24,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:24,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 224 transitions, 2400 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) [2024-06-28 01:22:24,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:24,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:24,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:24,932 INFO L124 PetriNetUnfolderBase]: 1302/2547 cut-off events. [2024-06-28 01:22:24,933 INFO L125 PetriNetUnfolderBase]: For 35761/35761 co-relation queries the response was YES. [2024-06-28 01:22:24,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13170 conditions, 2547 events. 1302/2547 cut-off events. For 35761/35761 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16932 event pairs, 209 based on Foata normal form. 1/2433 useless extension candidates. Maximal degree in co-relation 13092. Up to 1865 conditions per place. [2024-06-28 01:22:24,954 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 185 selfloop transitions, 61 changer transitions 0/254 dead transitions. [2024-06-28 01:22:24,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 254 transitions, 3180 flow [2024-06-28 01:22:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:24,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 01:22:24,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901315789473684 [2024-06-28 01:22:24,955 INFO L175 Difference]: Start difference. First operand has 170 places, 224 transitions, 2400 flow. Second operand 8 states and 149 transitions. [2024-06-28 01:22:24,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 254 transitions, 3180 flow [2024-06-28 01:22:24,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 254 transitions, 3107 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:25,001 INFO L231 Difference]: Finished difference. Result has 172 places, 228 transitions, 2542 flow [2024-06-28 01:22:25,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2327, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2542, PETRI_PLACES=172, PETRI_TRANSITIONS=228} [2024-06-28 01:22:25,002 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2024-06-28 01:22:25,002 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 228 transitions, 2542 flow [2024-06-28 01:22:25,002 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) [2024-06-28 01:22:25,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:25,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:25,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:22:25,003 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:25,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:25,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1146246891, now seen corresponding path program 4 times [2024-06-28 01:22:25,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:25,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484763095] [2024-06-28 01:22:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:25,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:25,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:25,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484763095] [2024-06-28 01:22:25,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484763095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:25,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:25,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:25,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675603639] [2024-06-28 01:22:25,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:25,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:25,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:25,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:22:25,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 228 transitions, 2542 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) [2024-06-28 01:22:25,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:25,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:22:25,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:26,347 INFO L124 PetriNetUnfolderBase]: 1222/2466 cut-off events. [2024-06-28 01:22:26,348 INFO L125 PetriNetUnfolderBase]: For 39682/39784 co-relation queries the response was YES. [2024-06-28 01:22:26,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12614 conditions, 2466 events. 1222/2466 cut-off events. For 39682/39784 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16828 event pairs, 407 based on Foata normal form. 70/2423 useless extension candidates. Maximal degree in co-relation 12535. Up to 1798 conditions per place. [2024-06-28 01:22:26,368 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 203 selfloop transitions, 14 changer transitions 0/257 dead transitions. [2024-06-28 01:22:26,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 257 transitions, 3154 flow [2024-06-28 01:22:26,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 01:22:26,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-06-28 01:22:26,370 INFO L175 Difference]: Start difference. First operand has 172 places, 228 transitions, 2542 flow. Second operand 8 states and 151 transitions. [2024-06-28 01:22:26,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 257 transitions, 3154 flow [2024-06-28 01:22:26,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 257 transitions, 3049 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 01:22:26,421 INFO L231 Difference]: Finished difference. Result has 176 places, 230 transitions, 2502 flow [2024-06-28 01:22:26,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2437, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2502, PETRI_PLACES=176, PETRI_TRANSITIONS=230} [2024-06-28 01:22:26,422 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-28 01:22:26,423 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 230 transitions, 2502 flow [2024-06-28 01:22:26,424 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) [2024-06-28 01:22:26,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:26,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:26,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:22:26,430 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:26,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:26,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1156731091, now seen corresponding path program 9 times [2024-06-28 01:22:26,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:26,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595785615] [2024-06-28 01:22:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:26,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:27,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:27,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595785615] [2024-06-28 01:22:27,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595785615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:27,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:27,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:27,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515206565] [2024-06-28 01:22:27,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:27,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:27,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:27,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:27,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:27,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:27,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 230 transitions, 2502 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) [2024-06-28 01:22:27,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:27,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:27,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:27,703 INFO L124 PetriNetUnfolderBase]: 1322/2590 cut-off events. [2024-06-28 01:22:27,703 INFO L125 PetriNetUnfolderBase]: For 38252/38252 co-relation queries the response was YES. [2024-06-28 01:22:27,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13605 conditions, 2590 events. 1322/2590 cut-off events. For 38252/38252 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17359 event pairs, 215 based on Foata normal form. 1/2472 useless extension candidates. Maximal degree in co-relation 13524. Up to 1919 conditions per place. [2024-06-28 01:22:27,724 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 189 selfloop transitions, 58 changer transitions 0/255 dead transitions. [2024-06-28 01:22:27,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 255 transitions, 3134 flow [2024-06-28 01:22:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:27,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 01:22:27,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-28 01:22:27,725 INFO L175 Difference]: Start difference. First operand has 176 places, 230 transitions, 2502 flow. Second operand 8 states and 146 transitions. [2024-06-28 01:22:27,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 255 transitions, 3134 flow [2024-06-28 01:22:27,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 255 transitions, 3025 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:27,781 INFO L231 Difference]: Finished difference. Result has 177 places, 230 transitions, 2514 flow [2024-06-28 01:22:27,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2393, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2514, PETRI_PLACES=177, PETRI_TRANSITIONS=230} [2024-06-28 01:22:27,782 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2024-06-28 01:22:27,782 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 230 transitions, 2514 flow [2024-06-28 01:22:27,782 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) [2024-06-28 01:22:27,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:27,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:27,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:22:27,783 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:27,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:27,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1566789089, now seen corresponding path program 5 times [2024-06-28 01:22:27,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:27,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528348896] [2024-06-28 01:22:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:27,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:28,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:28,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528348896] [2024-06-28 01:22:28,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528348896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:28,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:28,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:28,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303557581] [2024-06-28 01:22:28,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:28,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:28,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:28,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:28,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:28,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:22:28,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 230 transitions, 2514 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) [2024-06-28 01:22:28,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:28,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:22:28,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:29,106 INFO L124 PetriNetUnfolderBase]: 1227/2437 cut-off events. [2024-06-28 01:22:29,107 INFO L125 PetriNetUnfolderBase]: For 38112/38190 co-relation queries the response was YES. [2024-06-28 01:22:29,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12521 conditions, 2437 events. 1227/2437 cut-off events. For 38112/38190 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16364 event pairs, 324 based on Foata normal form. 55/2392 useless extension candidates. Maximal degree in co-relation 12440. Up to 1682 conditions per place. [2024-06-28 01:22:29,127 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 182 selfloop transitions, 40 changer transitions 0/262 dead transitions. [2024-06-28 01:22:29,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 262 transitions, 3158 flow [2024-06-28 01:22:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 01:22:29,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-06-28 01:22:29,129 INFO L175 Difference]: Start difference. First operand has 177 places, 230 transitions, 2514 flow. Second operand 8 states and 154 transitions. [2024-06-28 01:22:29,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 262 transitions, 3158 flow [2024-06-28 01:22:29,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 262 transitions, 3035 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:29,190 INFO L231 Difference]: Finished difference. Result has 180 places, 237 transitions, 2570 flow [2024-06-28 01:22:29,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2570, PETRI_PLACES=180, PETRI_TRANSITIONS=237} [2024-06-28 01:22:29,191 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2024-06-28 01:22:29,191 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 237 transitions, 2570 flow [2024-06-28 01:22:29,191 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) [2024-06-28 01:22:29,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:29,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:29,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:22:29,192 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:29,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:29,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1156434421, now seen corresponding path program 10 times [2024-06-28 01:22:29,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:29,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903493073] [2024-06-28 01:22:29,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:29,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:29,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:29,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903493073] [2024-06-28 01:22:29,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903493073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:29,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:29,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:29,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200045491] [2024-06-28 01:22:29,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:29,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:29,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:29,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:30,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:30,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 237 transitions, 2570 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) [2024-06-28 01:22:30,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:30,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:30,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:30,463 INFO L124 PetriNetUnfolderBase]: 1324/2602 cut-off events. [2024-06-28 01:22:30,463 INFO L125 PetriNetUnfolderBase]: For 39252/39252 co-relation queries the response was YES. [2024-06-28 01:22:30,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13668 conditions, 2602 events. 1324/2602 cut-off events. For 39252/39252 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17542 event pairs, 206 based on Foata normal form. 1/2487 useless extension candidates. Maximal degree in co-relation 13584. Up to 1737 conditions per place. [2024-06-28 01:22:30,484 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 167 selfloop transitions, 89 changer transitions 0/264 dead transitions. [2024-06-28 01:22:30,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 264 transitions, 3266 flow [2024-06-28 01:22:30,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 01:22:30,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:22:30,486 INFO L175 Difference]: Start difference. First operand has 180 places, 237 transitions, 2570 flow. Second operand 8 states and 148 transitions. [2024-06-28 01:22:30,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 264 transitions, 3266 flow [2024-06-28 01:22:30,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 264 transitions, 3204 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:22:30,548 INFO L231 Difference]: Finished difference. Result has 185 places, 239 transitions, 2741 flow [2024-06-28 01:22:30,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2741, PETRI_PLACES=185, PETRI_TRANSITIONS=239} [2024-06-28 01:22:30,550 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2024-06-28 01:22:30,550 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 239 transitions, 2741 flow [2024-06-28 01:22:30,551 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) [2024-06-28 01:22:30,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:30,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:30,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:22:30,551 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:30,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1370616883, now seen corresponding path program 10 times [2024-06-28 01:22:30,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:30,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106304762] [2024-06-28 01:22:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:30,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:31,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:31,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106304762] [2024-06-28 01:22:31,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106304762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:31,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:31,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:31,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863414224] [2024-06-28 01:22:31,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:31,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:31,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:31,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:31,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:31,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:31,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 239 transitions, 2741 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) [2024-06-28 01:22:31,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:31,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:31,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:31,678 INFO L124 PetriNetUnfolderBase]: 1336/2592 cut-off events. [2024-06-28 01:22:31,678 INFO L125 PetriNetUnfolderBase]: For 41957/41957 co-relation queries the response was YES. [2024-06-28 01:22:31,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14185 conditions, 2592 events. 1336/2592 cut-off events. For 41957/41957 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 17282 event pairs, 232 based on Foata normal form. 2/2488 useless extension candidates. Maximal degree in co-relation 14099. Up to 1566 conditions per place. [2024-06-28 01:22:31,705 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 149 selfloop transitions, 111 changer transitions 0/268 dead transitions. [2024-06-28 01:22:31,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 268 transitions, 3455 flow [2024-06-28 01:22:31,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:31,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 01:22:31,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-28 01:22:31,708 INFO L175 Difference]: Start difference. First operand has 185 places, 239 transitions, 2741 flow. Second operand 8 states and 150 transitions. [2024-06-28 01:22:31,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 268 transitions, 3455 flow [2024-06-28 01:22:31,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 268 transitions, 3234 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:31,786 INFO L231 Difference]: Finished difference. Result has 187 places, 241 transitions, 2799 flow [2024-06-28 01:22:31,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2520, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2799, PETRI_PLACES=187, PETRI_TRANSITIONS=241} [2024-06-28 01:22:31,789 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 145 predicate places. [2024-06-28 01:22:31,789 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 241 transitions, 2799 flow [2024-06-28 01:22:31,789 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) [2024-06-28 01:22:31,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:31,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:31,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:22:31,789 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:31,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:31,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1567158175, now seen corresponding path program 1 times [2024-06-28 01:22:31,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:31,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554785200] [2024-06-28 01:22:31,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:31,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:32,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:32,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554785200] [2024-06-28 01:22:32,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554785200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:32,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:32,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:22:32,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546139258] [2024-06-28 01:22:32,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:32,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:22:32,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:32,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:22:32,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:22:32,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:22:32,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 241 transitions, 2799 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:32,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:32,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:22:32,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:33,235 INFO L124 PetriNetUnfolderBase]: 1235/2481 cut-off events. [2024-06-28 01:22:33,235 INFO L125 PetriNetUnfolderBase]: For 44588/44691 co-relation queries the response was YES. [2024-06-28 01:22:33,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13251 conditions, 2481 events. 1235/2481 cut-off events. For 44588/44691 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17070 event pairs, 411 based on Foata normal form. 71/2441 useless extension candidates. Maximal degree in co-relation 13164. Up to 1826 conditions per place. [2024-06-28 01:22:33,257 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 214 selfloop transitions, 14 changer transitions 0/269 dead transitions. [2024-06-28 01:22:33,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 269 transitions, 3412 flow [2024-06-28 01:22:33,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:22:33,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:22:33,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 01:22:33,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-28 01:22:33,258 INFO L175 Difference]: Start difference. First operand has 187 places, 241 transitions, 2799 flow. Second operand 8 states and 150 transitions. [2024-06-28 01:22:33,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 269 transitions, 3412 flow [2024-06-28 01:22:33,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 269 transitions, 3149 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:33,313 INFO L231 Difference]: Finished difference. Result has 189 places, 242 transitions, 2578 flow [2024-06-28 01:22:33,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2536, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2578, PETRI_PLACES=189, PETRI_TRANSITIONS=242} [2024-06-28 01:22:33,314 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 147 predicate places. [2024-06-28 01:22:33,314 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 242 transitions, 2578 flow [2024-06-28 01:22:33,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:33,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:33,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:33,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:22:33,315 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:33,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:33,315 INFO L85 PathProgramCache]: Analyzing trace with hash 225566963, now seen corresponding path program 1 times [2024-06-28 01:22:33,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:33,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853432797] [2024-06-28 01:22:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:33,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:34,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:34,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853432797] [2024-06-28 01:22:34,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853432797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:34,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:34,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:34,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832012754] [2024-06-28 01:22:34,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:34,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:34,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:34,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:34,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:34,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:34,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 242 transitions, 2578 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) [2024-06-28 01:22:34,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:34,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:34,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:34,683 INFO L124 PetriNetUnfolderBase]: 1360/2629 cut-off events. [2024-06-28 01:22:34,683 INFO L125 PetriNetUnfolderBase]: For 41887/41887 co-relation queries the response was YES. [2024-06-28 01:22:34,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13887 conditions, 2629 events. 1360/2629 cut-off events. For 41887/41887 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 17837 event pairs, 358 based on Foata normal form. 1/2538 useless extension candidates. Maximal degree in co-relation 13799. Up to 1979 conditions per place. [2024-06-28 01:22:34,705 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 219 selfloop transitions, 62 changer transitions 0/289 dead transitions. [2024-06-28 01:22:34,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 289 transitions, 3390 flow [2024-06-28 01:22:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 01:22:34,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:22:34,706 INFO L175 Difference]: Start difference. First operand has 189 places, 242 transitions, 2578 flow. Second operand 10 states and 190 transitions. [2024-06-28 01:22:34,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 289 transitions, 3390 flow [2024-06-28 01:22:34,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 289 transitions, 3358 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:34,777 INFO L231 Difference]: Finished difference. Result has 194 places, 248 transitions, 2777 flow [2024-06-28 01:22:34,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2777, PETRI_PLACES=194, PETRI_TRANSITIONS=248} [2024-06-28 01:22:34,778 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 152 predicate places. [2024-06-28 01:22:34,779 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 248 transitions, 2777 flow [2024-06-28 01:22:34,779 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) [2024-06-28 01:22:34,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:34,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:34,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:22:34,779 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:34,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:34,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1451162833, now seen corresponding path program 2 times [2024-06-28 01:22:34,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:34,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369898843] [2024-06-28 01:22:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:34,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:35,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:35,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369898843] [2024-06-28 01:22:35,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369898843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:35,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:35,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:35,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569855193] [2024-06-28 01:22:35,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:35,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:35,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:35,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:35,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:35,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:35,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 248 transitions, 2777 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) [2024-06-28 01:22:35,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:35,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:35,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:35,911 INFO L124 PetriNetUnfolderBase]: 1391/2666 cut-off events. [2024-06-28 01:22:35,912 INFO L125 PetriNetUnfolderBase]: For 45577/45577 co-relation queries the response was YES. [2024-06-28 01:22:35,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14649 conditions, 2666 events. 1391/2666 cut-off events. For 45577/45577 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 17981 event pairs, 373 based on Foata normal form. 1/2581 useless extension candidates. Maximal degree in co-relation 14559. Up to 2055 conditions per place. [2024-06-28 01:22:35,934 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 207 selfloop transitions, 80 changer transitions 0/295 dead transitions. [2024-06-28 01:22:35,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 295 transitions, 3714 flow [2024-06-28 01:22:35,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:35,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:35,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:22:35,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-28 01:22:35,936 INFO L175 Difference]: Start difference. First operand has 194 places, 248 transitions, 2777 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:22:35,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 295 transitions, 3714 flow [2024-06-28 01:22:35,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 295 transitions, 3479 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:36,001 INFO L231 Difference]: Finished difference. Result has 198 places, 265 transitions, 3011 flow [2024-06-28 01:22:36,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3011, PETRI_PLACES=198, PETRI_TRANSITIONS=265} [2024-06-28 01:22:36,002 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 156 predicate places. [2024-06-28 01:22:36,002 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 265 transitions, 3011 flow [2024-06-28 01:22:36,002 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) [2024-06-28 01:22:36,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:36,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:36,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:22:36,002 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:36,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:36,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1451305340, now seen corresponding path program 1 times [2024-06-28 01:22:36,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:36,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473251708] [2024-06-28 01:22:36,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:36,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:36,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:36,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473251708] [2024-06-28 01:22:36,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473251708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:36,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:36,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:36,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503672892] [2024-06-28 01:22:36,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:36,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:36,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:36,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:36,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:36,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:36,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 265 transitions, 3011 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) [2024-06-28 01:22:36,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:36,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:36,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:37,252 INFO L124 PetriNetUnfolderBase]: 1413/2707 cut-off events. [2024-06-28 01:22:37,253 INFO L125 PetriNetUnfolderBase]: For 49450/49450 co-relation queries the response was YES. [2024-06-28 01:22:37,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15006 conditions, 2707 events. 1413/2707 cut-off events. For 49450/49450 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 18302 event pairs, 371 based on Foata normal form. 2/2621 useless extension candidates. Maximal degree in co-relation 14914. Up to 2050 conditions per place. [2024-06-28 01:22:37,277 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 213 selfloop transitions, 81 changer transitions 0/302 dead transitions. [2024-06-28 01:22:37,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 302 transitions, 3811 flow [2024-06-28 01:22:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:22:37,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-28 01:22:37,282 INFO L175 Difference]: Start difference. First operand has 198 places, 265 transitions, 3011 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:22:37,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 302 transitions, 3811 flow [2024-06-28 01:22:37,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 302 transitions, 3634 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:37,384 INFO L231 Difference]: Finished difference. Result has 202 places, 268 transitions, 3079 flow [2024-06-28 01:22:37,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2850, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3079, PETRI_PLACES=202, PETRI_TRANSITIONS=268} [2024-06-28 01:22:37,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 160 predicate places. [2024-06-28 01:22:37,385 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 268 transitions, 3079 flow [2024-06-28 01:22:37,385 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) [2024-06-28 01:22:37,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:37,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:37,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:22:37,385 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:37,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:37,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1901715763, now seen corresponding path program 3 times [2024-06-28 01:22:37,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:37,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934008897] [2024-06-28 01:22:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:37,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:38,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:38,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934008897] [2024-06-28 01:22:38,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934008897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:38,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:38,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:38,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631418833] [2024-06-28 01:22:38,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:38,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:38,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:38,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:38,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:38,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:38,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 268 transitions, 3079 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) [2024-06-28 01:22:38,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:38,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:38,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:38,801 INFO L124 PetriNetUnfolderBase]: 1455/2788 cut-off events. [2024-06-28 01:22:38,802 INFO L125 PetriNetUnfolderBase]: For 48261/48261 co-relation queries the response was YES. [2024-06-28 01:22:38,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15260 conditions, 2788 events. 1455/2788 cut-off events. For 48261/48261 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18974 event pairs, 384 based on Foata normal form. 1/2699 useless extension candidates. Maximal degree in co-relation 15168. Up to 2143 conditions per place. [2024-06-28 01:22:38,825 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 217 selfloop transitions, 89 changer transitions 0/314 dead transitions. [2024-06-28 01:22:38,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 314 transitions, 3983 flow [2024-06-28 01:22:38,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:22:38,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-28 01:22:38,826 INFO L175 Difference]: Start difference. First operand has 202 places, 268 transitions, 3079 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:22:38,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 314 transitions, 3983 flow [2024-06-28 01:22:38,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 314 transitions, 3782 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:38,906 INFO L231 Difference]: Finished difference. Result has 205 places, 284 transitions, 3282 flow [2024-06-28 01:22:38,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2878, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3282, PETRI_PLACES=205, PETRI_TRANSITIONS=284} [2024-06-28 01:22:38,907 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-06-28 01:22:38,907 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 284 transitions, 3282 flow [2024-06-28 01:22:38,907 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) [2024-06-28 01:22:38,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:38,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:38,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:22:38,907 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:38,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:38,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1901536986, now seen corresponding path program 2 times [2024-06-28 01:22:38,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:38,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440593800] [2024-06-28 01:22:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:38,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:39,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:39,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440593800] [2024-06-28 01:22:39,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440593800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:39,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:39,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:39,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959874226] [2024-06-28 01:22:39,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:39,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:39,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:39,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:39,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:39,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:39,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 284 transitions, 3282 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) [2024-06-28 01:22:39,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:39,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:39,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:40,308 INFO L124 PetriNetUnfolderBase]: 1491/2850 cut-off events. [2024-06-28 01:22:40,308 INFO L125 PetriNetUnfolderBase]: For 51528/51528 co-relation queries the response was YES. [2024-06-28 01:22:40,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15660 conditions, 2850 events. 1491/2850 cut-off events. For 51528/51528 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 19469 event pairs, 388 based on Foata normal form. 2/2760 useless extension candidates. Maximal degree in co-relation 15566. Up to 2165 conditions per place. [2024-06-28 01:22:40,332 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 232 selfloop transitions, 82 changer transitions 0/322 dead transitions. [2024-06-28 01:22:40,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 322 transitions, 4116 flow [2024-06-28 01:22:40,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:40,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:40,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:22:40,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-28 01:22:40,334 INFO L175 Difference]: Start difference. First operand has 205 places, 284 transitions, 3282 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:22:40,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 322 transitions, 4116 flow [2024-06-28 01:22:40,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 322 transitions, 3962 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:40,431 INFO L231 Difference]: Finished difference. Result has 210 places, 290 transitions, 3388 flow [2024-06-28 01:22:40,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3128, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3388, PETRI_PLACES=210, PETRI_TRANSITIONS=290} [2024-06-28 01:22:40,432 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 168 predicate places. [2024-06-28 01:22:40,432 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 290 transitions, 3388 flow [2024-06-28 01:22:40,432 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) [2024-06-28 01:22:40,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:40,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:40,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:22:40,433 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:40,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:40,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1314768427, now seen corresponding path program 1 times [2024-06-28 01:22:40,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:40,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484001018] [2024-06-28 01:22:40,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:40,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:41,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:41,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484001018] [2024-06-28 01:22:41,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484001018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:41,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:41,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:41,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189667290] [2024-06-28 01:22:41,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:41,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:41,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:41,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:41,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:41,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:41,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 290 transitions, 3388 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) [2024-06-28 01:22:41,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:41,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:41,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:41,615 INFO L124 PetriNetUnfolderBase]: 1513/2896 cut-off events. [2024-06-28 01:22:41,615 INFO L125 PetriNetUnfolderBase]: For 54364/54364 co-relation queries the response was YES. [2024-06-28 01:22:41,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16162 conditions, 2896 events. 1513/2896 cut-off events. For 54364/54364 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 19821 event pairs, 388 based on Foata normal form. 2/2803 useless extension candidates. Maximal degree in co-relation 16067. Up to 2280 conditions per place. [2024-06-28 01:22:41,640 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 266 selfloop transitions, 52 changer transitions 0/326 dead transitions. [2024-06-28 01:22:41,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 326 transitions, 4212 flow [2024-06-28 01:22:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:41,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 01:22:41,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-28 01:22:41,641 INFO L175 Difference]: Start difference. First operand has 210 places, 290 transitions, 3388 flow. Second operand 10 states and 181 transitions. [2024-06-28 01:22:41,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 326 transitions, 4212 flow [2024-06-28 01:22:41,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 326 transitions, 4010 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:41,733 INFO L231 Difference]: Finished difference. Result has 212 places, 292 transitions, 3335 flow [2024-06-28 01:22:41,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3186, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3335, PETRI_PLACES=212, PETRI_TRANSITIONS=292} [2024-06-28 01:22:41,734 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2024-06-28 01:22:41,734 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 292 transitions, 3335 flow [2024-06-28 01:22:41,734 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) [2024-06-28 01:22:41,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:41,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:41,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:22:41,735 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:41,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:41,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1313585746, now seen corresponding path program 3 times [2024-06-28 01:22:41,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:41,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627369588] [2024-06-28 01:22:41,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:41,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:42,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:42,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627369588] [2024-06-28 01:22:42,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627369588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:42,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:42,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:42,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481930295] [2024-06-28 01:22:42,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:42,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:42,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:42,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:42,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:42,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:42,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 292 transitions, 3335 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) [2024-06-28 01:22:42,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:42,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:42,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:43,153 INFO L124 PetriNetUnfolderBase]: 1550/2978 cut-off events. [2024-06-28 01:22:43,154 INFO L125 PetriNetUnfolderBase]: For 57330/57330 co-relation queries the response was YES. [2024-06-28 01:22:43,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16682 conditions, 2978 events. 1550/2978 cut-off events. For 57330/57330 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 20638 event pairs, 345 based on Foata normal form. 1/2873 useless extension candidates. Maximal degree in co-relation 16586. Up to 2021 conditions per place. [2024-06-28 01:22:43,180 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 216 selfloop transitions, 108 changer transitions 0/332 dead transitions. [2024-06-28 01:22:43,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 332 transitions, 4331 flow [2024-06-28 01:22:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:22:43,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:22:43,181 INFO L175 Difference]: Start difference. First operand has 212 places, 292 transitions, 3335 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:22:43,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 332 transitions, 4331 flow [2024-06-28 01:22:43,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 332 transitions, 4202 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:43,280 INFO L231 Difference]: Finished difference. Result has 215 places, 297 transitions, 3570 flow [2024-06-28 01:22:43,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3206, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3570, PETRI_PLACES=215, PETRI_TRANSITIONS=297} [2024-06-28 01:22:43,281 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 173 predicate places. [2024-06-28 01:22:43,281 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 297 transitions, 3570 flow [2024-06-28 01:22:43,281 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) [2024-06-28 01:22:43,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:43,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:43,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:22:43,282 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:43,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:43,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1920227370, now seen corresponding path program 4 times [2024-06-28 01:22:43,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:43,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946010325] [2024-06-28 01:22:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:43,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:44,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:44,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946010325] [2024-06-28 01:22:44,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946010325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:44,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:44,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:44,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952732712] [2024-06-28 01:22:44,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:44,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:44,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:44,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:44,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:44,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:44,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 297 transitions, 3570 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) [2024-06-28 01:22:44,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:44,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:44,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:44,731 INFO L124 PetriNetUnfolderBase]: 1546/2960 cut-off events. [2024-06-28 01:22:44,732 INFO L125 PetriNetUnfolderBase]: For 60292/60292 co-relation queries the response was YES. [2024-06-28 01:22:44,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17145 conditions, 2960 events. 1546/2960 cut-off events. For 60292/60292 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 20382 event pairs, 348 based on Foata normal form. 2/2864 useless extension candidates. Maximal degree in co-relation 17047. Up to 2151 conditions per place. [2024-06-28 01:22:44,760 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 230 selfloop transitions, 94 changer transitions 0/332 dead transitions. [2024-06-28 01:22:44,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 332 transitions, 4388 flow [2024-06-28 01:22:44,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:44,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:22:44,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-28 01:22:44,761 INFO L175 Difference]: Start difference. First operand has 215 places, 297 transitions, 3570 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:22:44,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 332 transitions, 4388 flow [2024-06-28 01:22:44,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 332 transitions, 4203 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:44,881 INFO L231 Difference]: Finished difference. Result has 219 places, 297 transitions, 3581 flow [2024-06-28 01:22:44,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3385, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3581, PETRI_PLACES=219, PETRI_TRANSITIONS=297} [2024-06-28 01:22:44,881 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 177 predicate places. [2024-06-28 01:22:44,881 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 297 transitions, 3581 flow [2024-06-28 01:22:44,881 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) [2024-06-28 01:22:44,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:44,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:44,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:22:44,882 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:44,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1801356609, now seen corresponding path program 4 times [2024-06-28 01:22:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:44,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116970260] [2024-06-28 01:22:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:45,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:45,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116970260] [2024-06-28 01:22:45,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116970260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:45,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:45,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:45,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680542251] [2024-06-28 01:22:45,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:45,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:45,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:45,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:45,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:45,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:45,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 297 transitions, 3581 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) [2024-06-28 01:22:45,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:45,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:45,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:46,424 INFO L124 PetriNetUnfolderBase]: 1599/3052 cut-off events. [2024-06-28 01:22:46,424 INFO L125 PetriNetUnfolderBase]: For 60761/60761 co-relation queries the response was YES. [2024-06-28 01:22:46,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17799 conditions, 3052 events. 1599/3052 cut-off events. For 60761/60761 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 21043 event pairs, 370 based on Foata normal form. 1/2953 useless extension candidates. Maximal degree in co-relation 17699. Up to 2354 conditions per place. [2024-06-28 01:22:46,453 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 237 selfloop transitions, 101 changer transitions 0/346 dead transitions. [2024-06-28 01:22:46,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 346 transitions, 4614 flow [2024-06-28 01:22:46,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:22:46,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-28 01:22:46,454 INFO L175 Difference]: Start difference. First operand has 219 places, 297 transitions, 3581 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:22:46,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 346 transitions, 4614 flow [2024-06-28 01:22:46,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 346 transitions, 4383 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 01:22:46,567 INFO L231 Difference]: Finished difference. Result has 221 places, 318 transitions, 3854 flow [2024-06-28 01:22:46,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3350, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3854, PETRI_PLACES=221, PETRI_TRANSITIONS=318} [2024-06-28 01:22:46,568 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 179 predicate places. [2024-06-28 01:22:46,568 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 318 transitions, 3854 flow [2024-06-28 01:22:46,568 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) [2024-06-28 01:22:46,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:46,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:46,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:22:46,568 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:46,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:46,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1358463266, now seen corresponding path program 5 times [2024-06-28 01:22:46,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:46,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15191058] [2024-06-28 01:22:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:46,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:47,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:47,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15191058] [2024-06-28 01:22:47,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15191058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:47,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:47,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:47,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88690750] [2024-06-28 01:22:47,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:47,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:47,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:47,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:47,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:47,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 318 transitions, 3854 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) [2024-06-28 01:22:47,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:47,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:47,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:48,163 INFO L124 PetriNetUnfolderBase]: 1649/3133 cut-off events. [2024-06-28 01:22:48,163 INFO L125 PetriNetUnfolderBase]: For 66170/66170 co-relation queries the response was YES. [2024-06-28 01:22:48,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18370 conditions, 3133 events. 1649/3133 cut-off events. For 66170/66170 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 21665 event pairs, 384 based on Foata normal form. 2/3033 useless extension candidates. Maximal degree in co-relation 18268. Up to 2404 conditions per place. [2024-06-28 01:22:48,189 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 266 selfloop transitions, 83 changer transitions 0/357 dead transitions. [2024-06-28 01:22:48,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 357 transitions, 4804 flow [2024-06-28 01:22:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:48,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:22:48,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-28 01:22:48,190 INFO L175 Difference]: Start difference. First operand has 221 places, 318 transitions, 3854 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:22:48,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 357 transitions, 4804 flow [2024-06-28 01:22:48,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 357 transitions, 4634 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:48,334 INFO L231 Difference]: Finished difference. Result has 226 places, 327 transitions, 4007 flow [2024-06-28 01:22:48,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3684, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4007, PETRI_PLACES=226, PETRI_TRANSITIONS=327} [2024-06-28 01:22:48,335 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 184 predicate places. [2024-06-28 01:22:48,335 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 327 transitions, 4007 flow [2024-06-28 01:22:48,335 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) [2024-06-28 01:22:48,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:48,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:48,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:22:48,336 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:48,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:48,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1363133726, now seen corresponding path program 6 times [2024-06-28 01:22:48,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:48,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128776947] [2024-06-28 01:22:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:48,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:49,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:49,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128776947] [2024-06-28 01:22:49,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128776947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:49,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:49,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:49,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330539094] [2024-06-28 01:22:49,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:49,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:49,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:49,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:49,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:49,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:49,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 327 transitions, 4007 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) [2024-06-28 01:22:49,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:49,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:49,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:49,962 INFO L124 PetriNetUnfolderBase]: 1685/3230 cut-off events. [2024-06-28 01:22:49,962 INFO L125 PetriNetUnfolderBase]: For 71256/71256 co-relation queries the response was YES. [2024-06-28 01:22:49,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19145 conditions, 3230 events. 1685/3230 cut-off events. For 71256/71256 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22640 event pairs, 363 based on Foata normal form. 2/3118 useless extension candidates. Maximal degree in co-relation 19042. Up to 2405 conditions per place. [2024-06-28 01:22:49,994 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 269 selfloop transitions, 89 changer transitions 0/366 dead transitions. [2024-06-28 01:22:49,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 366 transitions, 4985 flow [2024-06-28 01:22:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:50,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:22:50,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:22:50,000 INFO L175 Difference]: Start difference. First operand has 226 places, 327 transitions, 4007 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:22:50,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 366 transitions, 4985 flow [2024-06-28 01:22:50,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 366 transitions, 4780 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:50,119 INFO L231 Difference]: Finished difference. Result has 228 places, 333 transitions, 4103 flow [2024-06-28 01:22:50,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3802, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4103, PETRI_PLACES=228, PETRI_TRANSITIONS=333} [2024-06-28 01:22:50,123 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 186 predicate places. [2024-06-28 01:22:50,123 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 333 transitions, 4103 flow [2024-06-28 01:22:50,123 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) [2024-06-28 01:22:50,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:50,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:50,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:22:50,123 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:50,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:50,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1363141445, now seen corresponding path program 2 times [2024-06-28 01:22:50,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:50,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949563199] [2024-06-28 01:22:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:50,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:50,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:50,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949563199] [2024-06-28 01:22:50,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949563199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:50,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:50,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:50,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241172024] [2024-06-28 01:22:50,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:50,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:50,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:50,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:50,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:50,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 333 transitions, 4103 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) [2024-06-28 01:22:50,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:50,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:50,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:51,585 INFO L124 PetriNetUnfolderBase]: 1703/3238 cut-off events. [2024-06-28 01:22:51,586 INFO L125 PetriNetUnfolderBase]: For 71534/71534 co-relation queries the response was YES. [2024-06-28 01:22:51,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19472 conditions, 3238 events. 1703/3238 cut-off events. For 71534/71534 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22566 event pairs, 456 based on Foata normal form. 1/3133 useless extension candidates. Maximal degree in co-relation 19368. Up to 2583 conditions per place. [2024-06-28 01:22:51,618 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 307 selfloop transitions, 52 changer transitions 0/367 dead transitions. [2024-06-28 01:22:51,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 367 transitions, 4995 flow [2024-06-28 01:22:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:51,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 01:22:51,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-28 01:22:51,619 INFO L175 Difference]: Start difference. First operand has 228 places, 333 transitions, 4103 flow. Second operand 10 states and 180 transitions. [2024-06-28 01:22:51,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 367 transitions, 4995 flow [2024-06-28 01:22:51,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 367 transitions, 4756 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:51,779 INFO L231 Difference]: Finished difference. Result has 230 places, 336 transitions, 4022 flow [2024-06-28 01:22:51,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3864, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4022, PETRI_PLACES=230, PETRI_TRANSITIONS=336} [2024-06-28 01:22:51,779 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 188 predicate places. [2024-06-28 01:22:51,779 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 336 transitions, 4022 flow [2024-06-28 01:22:51,779 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) [2024-06-28 01:22:51,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:51,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:51,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:22:51,780 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:51,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:51,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1363141166, now seen corresponding path program 7 times [2024-06-28 01:22:51,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:51,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191556218] [2024-06-28 01:22:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:51,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:52,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:52,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191556218] [2024-06-28 01:22:52,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191556218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:52,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:52,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:52,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068076042] [2024-06-28 01:22:52,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:52,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:52,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:52,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:52,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:52,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:52,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 336 transitions, 4022 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) [2024-06-28 01:22:52,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:52,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:52,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:53,245 INFO L124 PetriNetUnfolderBase]: 1721/3300 cut-off events. [2024-06-28 01:22:53,245 INFO L125 PetriNetUnfolderBase]: For 71955/71955 co-relation queries the response was YES. [2024-06-28 01:22:53,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19463 conditions, 3300 events. 1721/3300 cut-off events. For 71955/71955 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 23298 event pairs, 371 based on Foata normal form. 1/3181 useless extension candidates. Maximal degree in co-relation 19358. Up to 2356 conditions per place. [2024-06-28 01:22:53,279 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 259 selfloop transitions, 105 changer transitions 0/372 dead transitions. [2024-06-28 01:22:53,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 372 transitions, 4960 flow [2024-06-28 01:22:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:53,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:53,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:22:53,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:22:53,281 INFO L175 Difference]: Start difference. First operand has 230 places, 336 transitions, 4022 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:22:53,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 372 transitions, 4960 flow [2024-06-28 01:22:53,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 372 transitions, 4848 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:53,421 INFO L231 Difference]: Finished difference. Result has 233 places, 340 transitions, 4197 flow [2024-06-28 01:22:53,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3910, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4197, PETRI_PLACES=233, PETRI_TRANSITIONS=340} [2024-06-28 01:22:53,423 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 191 predicate places. [2024-06-28 01:22:53,423 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 340 transitions, 4197 flow [2024-06-28 01:22:53,423 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) [2024-06-28 01:22:53,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:53,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:53,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:22:53,423 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:53,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1536793835, now seen corresponding path program 3 times [2024-06-28 01:22:53,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:53,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466789574] [2024-06-28 01:22:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:53,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:54,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:54,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466789574] [2024-06-28 01:22:54,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466789574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:54,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:54,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:54,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290984048] [2024-06-28 01:22:54,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:54,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:54,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:54,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:54,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:54,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:54,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 340 transitions, 4197 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) [2024-06-28 01:22:54,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:54,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:54,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:54,849 INFO L124 PetriNetUnfolderBase]: 1745/3331 cut-off events. [2024-06-28 01:22:54,849 INFO L125 PetriNetUnfolderBase]: For 77365/77365 co-relation queries the response was YES. [2024-06-28 01:22:54,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20212 conditions, 3331 events. 1745/3331 cut-off events. For 77365/77365 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 23474 event pairs, 413 based on Foata normal form. 1/3215 useless extension candidates. Maximal degree in co-relation 20106. Up to 2481 conditions per place. [2024-06-28 01:22:54,883 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 293 selfloop transitions, 78 changer transitions 0/379 dead transitions. [2024-06-28 01:22:54,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 379 transitions, 5283 flow [2024-06-28 01:22:54,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:22:54,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-28 01:22:54,903 INFO L175 Difference]: Start difference. First operand has 233 places, 340 transitions, 4197 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:22:54,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 379 transitions, 5283 flow [2024-06-28 01:22:55,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 379 transitions, 5038 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:55,117 INFO L231 Difference]: Finished difference. Result has 236 places, 345 transitions, 4222 flow [2024-06-28 01:22:55,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3952, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4222, PETRI_PLACES=236, PETRI_TRANSITIONS=345} [2024-06-28 01:22:55,118 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 194 predicate places. [2024-06-28 01:22:55,118 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 345 transitions, 4222 flow [2024-06-28 01:22:55,118 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) [2024-06-28 01:22:55,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:55,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:55,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:22:55,119 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:55,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1044596223, now seen corresponding path program 4 times [2024-06-28 01:22:55,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:55,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525404070] [2024-06-28 01:22:55,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:55,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:55,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:55,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525404070] [2024-06-28 01:22:55,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525404070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:55,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:55,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:55,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724773228] [2024-06-28 01:22:55,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:55,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:55,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:55,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:55,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:55,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:55,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 345 transitions, 4222 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) [2024-06-28 01:22:55,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:55,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:55,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:56,656 INFO L124 PetriNetUnfolderBase]: 1756/3322 cut-off events. [2024-06-28 01:22:56,656 INFO L125 PetriNetUnfolderBase]: For 78416/78416 co-relation queries the response was YES. [2024-06-28 01:22:56,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20350 conditions, 3322 events. 1756/3322 cut-off events. For 78416/78416 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 23189 event pairs, 412 based on Foata normal form. 1/3215 useless extension candidates. Maximal degree in co-relation 20242. Up to 2493 conditions per place. [2024-06-28 01:22:56,690 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 300 selfloop transitions, 73 changer transitions 0/381 dead transitions. [2024-06-28 01:22:56,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 381 transitions, 5274 flow [2024-06-28 01:22:56,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:56,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:22:56,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:22:56,692 INFO L175 Difference]: Start difference. First operand has 236 places, 345 transitions, 4222 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:22:56,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 381 transitions, 5274 flow [2024-06-28 01:22:56,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 381 transitions, 5143 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:56,914 INFO L231 Difference]: Finished difference. Result has 240 places, 347 transitions, 4288 flow [2024-06-28 01:22:56,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4093, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4288, PETRI_PLACES=240, PETRI_TRANSITIONS=347} [2024-06-28 01:22:56,914 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 198 predicate places. [2024-06-28 01:22:56,914 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 347 transitions, 4288 flow [2024-06-28 01:22:56,915 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) [2024-06-28 01:22:56,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:56,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:56,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:22:56,915 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:56,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:56,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1536784256, now seen corresponding path program 8 times [2024-06-28 01:22:56,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:56,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17724895] [2024-06-28 01:22:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:56,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:57,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:57,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17724895] [2024-06-28 01:22:57,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17724895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:57,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:57,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:57,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786250827] [2024-06-28 01:22:57,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:57,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:57,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:57,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:57,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:57,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:57,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 347 transitions, 4288 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) [2024-06-28 01:22:57,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:57,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:57,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:58,636 INFO L124 PetriNetUnfolderBase]: 1793/3357 cut-off events. [2024-06-28 01:22:58,636 INFO L125 PetriNetUnfolderBase]: For 86581/86581 co-relation queries the response was YES. [2024-06-28 01:22:58,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21281 conditions, 3357 events. 1793/3357 cut-off events. For 86581/86581 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 23288 event pairs, 309 based on Foata normal form. 1/3253 useless extension candidates. Maximal degree in co-relation 21171. Up to 2039 conditions per place. [2024-06-28 01:22:58,672 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 228 selfloop transitions, 151 changer transitions 0/387 dead transitions. [2024-06-28 01:22:58,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 387 transitions, 5472 flow [2024-06-28 01:22:58,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 01:22:58,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2024-06-28 01:22:58,675 INFO L175 Difference]: Start difference. First operand has 240 places, 347 transitions, 4288 flow. Second operand 10 states and 189 transitions. [2024-06-28 01:22:58,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 387 transitions, 5472 flow [2024-06-28 01:22:58,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 387 transitions, 5320 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:58,894 INFO L231 Difference]: Finished difference. Result has 244 places, 352 transitions, 4667 flow [2024-06-28 01:22:58,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4136, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4667, PETRI_PLACES=244, PETRI_TRANSITIONS=352} [2024-06-28 01:22:58,895 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 202 predicate places. [2024-06-28 01:22:58,895 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 352 transitions, 4667 flow [2024-06-28 01:22:58,896 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) [2024-06-28 01:22:58,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:58,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:58,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:22:58,896 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:58,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:58,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1979416486, now seen corresponding path program 9 times [2024-06-28 01:22:58,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:58,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483238490] [2024-06-28 01:22:58,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:58,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:59,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:59,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483238490] [2024-06-28 01:22:59,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483238490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:59,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:59,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:59,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493233316] [2024-06-28 01:22:59,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:59,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:59,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:59,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:59,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:59,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:59,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 352 transitions, 4667 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) [2024-06-28 01:22:59,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:59,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:59,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:00,313 INFO L124 PetriNetUnfolderBase]: 1802/3467 cut-off events. [2024-06-28 01:23:00,313 INFO L125 PetriNetUnfolderBase]: For 95521/95521 co-relation queries the response was YES. [2024-06-28 01:23:00,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22553 conditions, 3467 events. 1802/3467 cut-off events. For 95521/95521 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 24685 event pairs, 336 based on Foata normal form. 2/3341 useless extension candidates. Maximal degree in co-relation 22441. Up to 2406 conditions per place. [2024-06-28 01:23:00,347 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 272 selfloop transitions, 109 changer transitions 0/389 dead transitions. [2024-06-28 01:23:00,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 389 transitions, 5685 flow [2024-06-28 01:23:00,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:23:00,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:23:00,349 INFO L175 Difference]: Start difference. First operand has 244 places, 352 transitions, 4667 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:23:00,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 389 transitions, 5685 flow [2024-06-28 01:23:00,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 389 transitions, 5495 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:00,553 INFO L231 Difference]: Finished difference. Result has 248 places, 354 transitions, 4766 flow [2024-06-28 01:23:00,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4481, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4766, PETRI_PLACES=248, PETRI_TRANSITIONS=354} [2024-06-28 01:23:00,555 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 206 predicate places. [2024-06-28 01:23:00,555 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 354 transitions, 4766 flow [2024-06-28 01:23:00,555 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) [2024-06-28 01:23:00,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:00,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:00,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:23:00,556 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:00,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1536524786, now seen corresponding path program 10 times [2024-06-28 01:23:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:00,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654078150] [2024-06-28 01:23:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:00,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:01,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:01,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654078150] [2024-06-28 01:23:01,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654078150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:01,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:01,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:01,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412084233] [2024-06-28 01:23:01,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:01,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:01,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:01,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:01,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:01,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:01,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 354 transitions, 4766 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) [2024-06-28 01:23:01,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:01,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:01,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:02,158 INFO L124 PetriNetUnfolderBase]: 1800/3468 cut-off events. [2024-06-28 01:23:02,158 INFO L125 PetriNetUnfolderBase]: For 92464/92464 co-relation queries the response was YES. [2024-06-28 01:23:02,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22702 conditions, 3468 events. 1800/3468 cut-off events. For 92464/92464 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24760 event pairs, 334 based on Foata normal form. 1/3338 useless extension candidates. Maximal degree in co-relation 22588. Up to 2370 conditions per place. [2024-06-28 01:23:02,194 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 268 selfloop transitions, 113 changer transitions 0/389 dead transitions. [2024-06-28 01:23:02,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 389 transitions, 5724 flow [2024-06-28 01:23:02,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 01:23:02,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2024-06-28 01:23:02,196 INFO L175 Difference]: Start difference. First operand has 248 places, 354 transitions, 4766 flow. Second operand 10 states and 189 transitions. [2024-06-28 01:23:02,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 389 transitions, 5724 flow [2024-06-28 01:23:02,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 389 transitions, 5415 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:02,444 INFO L231 Difference]: Finished difference. Result has 250 places, 354 transitions, 4693 flow [2024-06-28 01:23:02,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4461, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4693, PETRI_PLACES=250, PETRI_TRANSITIONS=354} [2024-06-28 01:23:02,444 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2024-06-28 01:23:02,445 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 354 transitions, 4693 flow [2024-06-28 01:23:02,445 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) [2024-06-28 01:23:02,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:02,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:02,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:23:02,445 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:02,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:02,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1044855693, now seen corresponding path program 5 times [2024-06-28 01:23:02,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:02,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127397425] [2024-06-28 01:23:02,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:02,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:03,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:03,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127397425] [2024-06-28 01:23:03,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127397425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:03,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:03,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:03,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483817306] [2024-06-28 01:23:03,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:03,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:03,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:03,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:03,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:03,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:03,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 354 transitions, 4693 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) [2024-06-28 01:23:03,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:03,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:03,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:03,972 INFO L124 PetriNetUnfolderBase]: 1809/3457 cut-off events. [2024-06-28 01:23:03,972 INFO L125 PetriNetUnfolderBase]: For 89749/89749 co-relation queries the response was YES. [2024-06-28 01:23:03,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22296 conditions, 3457 events. 1809/3457 cut-off events. For 89749/89749 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 24535 event pairs, 454 based on Foata normal form. 2/3337 useless extension candidates. Maximal degree in co-relation 22181. Up to 2704 conditions per place. [2024-06-28 01:23:04,008 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 322 selfloop transitions, 60 changer transitions 0/390 dead transitions. [2024-06-28 01:23:04,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 390 transitions, 5665 flow [2024-06-28 01:23:04,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:04,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:23:04,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-28 01:23:04,009 INFO L175 Difference]: Start difference. First operand has 250 places, 354 transitions, 4693 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:23:04,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 390 transitions, 5665 flow [2024-06-28 01:23:04,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 390 transitions, 5301 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:04,258 INFO L231 Difference]: Finished difference. Result has 251 places, 356 transitions, 4504 flow [2024-06-28 01:23:04,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4504, PETRI_PLACES=251, PETRI_TRANSITIONS=356} [2024-06-28 01:23:04,259 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 209 predicate places. [2024-06-28 01:23:04,259 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 356 transitions, 4504 flow [2024-06-28 01:23:04,259 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) [2024-06-28 01:23:04,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:04,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:04,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:23:04,259 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:04,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:04,260 INFO L85 PathProgramCache]: Analyzing trace with hash 615837035, now seen corresponding path program 5 times [2024-06-28 01:23:04,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:04,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319944120] [2024-06-28 01:23:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:04,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:04,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:04,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319944120] [2024-06-28 01:23:04,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319944120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:04,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:04,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:04,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37325469] [2024-06-28 01:23:04,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:04,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:04,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:04,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:04,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:05,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:05,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 356 transitions, 4504 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) [2024-06-28 01:23:05,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:05,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:05,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:05,869 INFO L124 PetriNetUnfolderBase]: 1813/3450 cut-off events. [2024-06-28 01:23:05,869 INFO L125 PetriNetUnfolderBase]: For 86168/86168 co-relation queries the response was YES. [2024-06-28 01:23:05,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21757 conditions, 3450 events. 1813/3450 cut-off events. For 86168/86168 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24441 event pairs, 457 based on Foata normal form. 1/3337 useless extension candidates. Maximal degree in co-relation 21641. Up to 2636 conditions per place. [2024-06-28 01:23:05,907 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 262 selfloop transitions, 120 changer transitions 0/390 dead transitions. [2024-06-28 01:23:05,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 390 transitions, 5492 flow [2024-06-28 01:23:05,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:05,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:05,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:23:05,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-28 01:23:05,909 INFO L175 Difference]: Start difference. First operand has 251 places, 356 transitions, 4504 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:23:05,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 390 transitions, 5492 flow [2024-06-28 01:23:06,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 390 transitions, 5341 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:06,135 INFO L231 Difference]: Finished difference. Result has 252 places, 360 transitions, 4734 flow [2024-06-28 01:23:06,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4353, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4734, PETRI_PLACES=252, PETRI_TRANSITIONS=360} [2024-06-28 01:23:06,135 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-06-28 01:23:06,135 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 360 transitions, 4734 flow [2024-06-28 01:23:06,136 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) [2024-06-28 01:23:06,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:06,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:06,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:23:06,136 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:06,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:06,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1754445010, now seen corresponding path program 11 times [2024-06-28 01:23:06,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:06,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709047727] [2024-06-28 01:23:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:06,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:06,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:06,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709047727] [2024-06-28 01:23:06,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709047727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:06,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:06,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:06,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280055247] [2024-06-28 01:23:06,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:06,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:06,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:06,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:06,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:06,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:06,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 360 transitions, 4734 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) [2024-06-28 01:23:06,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:06,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:06,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:07,681 INFO L124 PetriNetUnfolderBase]: 1835/3464 cut-off events. [2024-06-28 01:23:07,681 INFO L125 PetriNetUnfolderBase]: For 92527/92527 co-relation queries the response was YES. [2024-06-28 01:23:07,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22444 conditions, 3464 events. 1835/3464 cut-off events. For 92527/92527 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 24398 event pairs, 420 based on Foata normal form. 2/3356 useless extension candidates. Maximal degree in co-relation 22327. Up to 2501 conditions per place. [2024-06-28 01:23:07,718 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 279 selfloop transitions, 107 changer transitions 0/394 dead transitions. [2024-06-28 01:23:07,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 394 transitions, 5754 flow [2024-06-28 01:23:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:07,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:23:07,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-28 01:23:07,719 INFO L175 Difference]: Start difference. First operand has 252 places, 360 transitions, 4734 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:23:07,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 394 transitions, 5754 flow [2024-06-28 01:23:07,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 394 transitions, 5478 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:07,960 INFO L231 Difference]: Finished difference. Result has 254 places, 363 transitions, 4807 flow [2024-06-28 01:23:07,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4464, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4807, PETRI_PLACES=254, PETRI_TRANSITIONS=363} [2024-06-28 01:23:07,961 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 212 predicate places. [2024-06-28 01:23:07,961 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 363 transitions, 4807 flow [2024-06-28 01:23:07,961 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) [2024-06-28 01:23:07,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:07,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:07,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:23:07,961 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:07,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:07,962 INFO L85 PathProgramCache]: Analyzing trace with hash -707794156, now seen corresponding path program 12 times [2024-06-28 01:23:07,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:07,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022267427] [2024-06-28 01:23:07,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:07,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:08,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:08,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022267427] [2024-06-28 01:23:08,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022267427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:08,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:08,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:08,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67887374] [2024-06-28 01:23:08,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:08,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:08,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:08,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:08,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:08,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:08,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 363 transitions, 4807 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) [2024-06-28 01:23:08,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:08,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:08,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:09,542 INFO L124 PetriNetUnfolderBase]: 1857/3562 cut-off events. [2024-06-28 01:23:09,542 INFO L125 PetriNetUnfolderBase]: For 91878/91878 co-relation queries the response was YES. [2024-06-28 01:23:09,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23015 conditions, 3562 events. 1857/3562 cut-off events. For 91878/91878 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 25546 event pairs, 365 based on Foata normal form. 2/3435 useless extension candidates. Maximal degree in co-relation 22898. Up to 2443 conditions per place. [2024-06-28 01:23:09,580 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 275 selfloop transitions, 115 changer transitions 0/398 dead transitions. [2024-06-28 01:23:09,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 398 transitions, 5865 flow [2024-06-28 01:23:09,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:09,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:23:09,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:23:09,582 INFO L175 Difference]: Start difference. First operand has 254 places, 363 transitions, 4807 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:23:09,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 398 transitions, 5865 flow [2024-06-28 01:23:09,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 398 transitions, 5568 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:09,799 INFO L231 Difference]: Finished difference. Result has 256 places, 366 transitions, 4874 flow [2024-06-28 01:23:09,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4540, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4874, PETRI_PLACES=256, PETRI_TRANSITIONS=366} [2024-06-28 01:23:09,800 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 214 predicate places. [2024-06-28 01:23:09,800 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 366 transitions, 4874 flow [2024-06-28 01:23:09,800 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) [2024-06-28 01:23:09,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:09,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:09,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:23:09,801 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:09,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:09,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1574821005, now seen corresponding path program 6 times [2024-06-28 01:23:09,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:09,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259050828] [2024-06-28 01:23:09,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:09,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:10,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:10,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259050828] [2024-06-28 01:23:10,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259050828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:10,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:10,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:10,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109484393] [2024-06-28 01:23:10,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:10,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:10,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:10,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:10,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:10,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:10,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 366 transitions, 4874 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) [2024-06-28 01:23:10,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:10,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:10,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:11,378 INFO L124 PetriNetUnfolderBase]: 1879/3571 cut-off events. [2024-06-28 01:23:11,378 INFO L125 PetriNetUnfolderBase]: For 84047/84047 co-relation queries the response was YES. [2024-06-28 01:23:11,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22778 conditions, 3571 events. 1879/3571 cut-off events. For 84047/84047 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 25412 event pairs, 441 based on Foata normal form. 2/3453 useless extension candidates. Maximal degree in co-relation 22660. Up to 2746 conditions per place. [2024-06-28 01:23:11,416 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 326 selfloop transitions, 66 changer transitions 0/400 dead transitions. [2024-06-28 01:23:11,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 400 transitions, 5866 flow [2024-06-28 01:23:11,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:23:11,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-28 01:23:11,418 INFO L175 Difference]: Start difference. First operand has 256 places, 366 transitions, 4874 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:23:11,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 400 transitions, 5866 flow [2024-06-28 01:23:11,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 400 transitions, 5575 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:11,638 INFO L231 Difference]: Finished difference. Result has 257 places, 368 transitions, 4780 flow [2024-06-28 01:23:11,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4583, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4780, PETRI_PLACES=257, PETRI_TRANSITIONS=368} [2024-06-28 01:23:11,639 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2024-06-28 01:23:11,639 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 368 transitions, 4780 flow [2024-06-28 01:23:11,639 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) [2024-06-28 01:23:11,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:11,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:11,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:23:11,639 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:11,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:11,640 INFO L85 PathProgramCache]: Analyzing trace with hash -707786716, now seen corresponding path program 13 times [2024-06-28 01:23:11,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:11,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636388532] [2024-06-28 01:23:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:11,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:12,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636388532] [2024-06-28 01:23:12,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636388532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:12,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:12,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:12,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386412413] [2024-06-28 01:23:12,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:12,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:12,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:12,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:12,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:12,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:12,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 368 transitions, 4780 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) [2024-06-28 01:23:12,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:12,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:12,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:13,228 INFO L124 PetriNetUnfolderBase]: 1890/3624 cut-off events. [2024-06-28 01:23:13,228 INFO L125 PetriNetUnfolderBase]: For 77222/77222 co-relation queries the response was YES. [2024-06-28 01:23:13,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22370 conditions, 3624 events. 1890/3624 cut-off events. For 77222/77222 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 26122 event pairs, 360 based on Foata normal form. 1/3487 useless extension candidates. Maximal degree in co-relation 22252. Up to 2238 conditions per place. [2024-06-28 01:23:13,266 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 243 selfloop transitions, 150 changer transitions 0/401 dead transitions. [2024-06-28 01:23:13,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 401 transitions, 5768 flow [2024-06-28 01:23:13,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:23:13,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:23:13,267 INFO L175 Difference]: Start difference. First operand has 257 places, 368 transitions, 4780 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:23:13,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 401 transitions, 5768 flow [2024-06-28 01:23:13,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 401 transitions, 5609 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:13,524 INFO L231 Difference]: Finished difference. Result has 259 places, 370 transitions, 4989 flow [2024-06-28 01:23:13,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4621, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4989, PETRI_PLACES=259, PETRI_TRANSITIONS=370} [2024-06-28 01:23:13,526 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2024-06-28 01:23:13,526 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 370 transitions, 4989 flow [2024-06-28 01:23:13,527 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) [2024-06-28 01:23:13,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:13,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:13,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:23:13,527 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:13,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:13,527 INFO L85 PathProgramCache]: Analyzing trace with hash 794288721, now seen corresponding path program 7 times [2024-06-28 01:23:13,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:13,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789866314] [2024-06-28 01:23:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:13,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:14,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:14,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789866314] [2024-06-28 01:23:14,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789866314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:14,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:14,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:14,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553930480] [2024-06-28 01:23:14,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:14,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:14,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:14,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:14,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:14,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:14,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 370 transitions, 4989 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) [2024-06-28 01:23:14,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:14,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:14,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:15,008 INFO L124 PetriNetUnfolderBase]: 1938/3624 cut-off events. [2024-06-28 01:23:15,008 INFO L125 PetriNetUnfolderBase]: For 85454/85454 co-relation queries the response was YES. [2024-06-28 01:23:15,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23603 conditions, 3624 events. 1938/3624 cut-off events. For 85454/85454 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 25437 event pairs, 369 based on Foata normal form. 2/3513 useless extension candidates. Maximal degree in co-relation 23484. Up to 2550 conditions per place. [2024-06-28 01:23:15,050 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 304 selfloop transitions, 96 changer transitions 0/408 dead transitions. [2024-06-28 01:23:15,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 408 transitions, 6168 flow [2024-06-28 01:23:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:23:15,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:23:15,052 INFO L175 Difference]: Start difference. First operand has 259 places, 370 transitions, 4989 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:23:15,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 408 transitions, 6168 flow [2024-06-28 01:23:15,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 408 transitions, 5834 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:15,307 INFO L231 Difference]: Finished difference. Result has 261 places, 374 transitions, 4955 flow [2024-06-28 01:23:15,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4659, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4955, PETRI_PLACES=261, PETRI_TRANSITIONS=374} [2024-06-28 01:23:15,307 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-06-28 01:23:15,307 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 374 transitions, 4955 flow [2024-06-28 01:23:15,308 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) [2024-06-28 01:23:15,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:15,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:15,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:23:15,308 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:15,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:15,308 INFO L85 PathProgramCache]: Analyzing trace with hash 794279142, now seen corresponding path program 14 times [2024-06-28 01:23:15,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:15,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050175129] [2024-06-28 01:23:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:15,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:16,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:16,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050175129] [2024-06-28 01:23:16,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050175129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:16,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:16,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:16,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053110388] [2024-06-28 01:23:16,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:16,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:16,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:16,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:16,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:16,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:16,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 374 transitions, 4955 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) [2024-06-28 01:23:16,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:16,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:16,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:16,952 INFO L124 PetriNetUnfolderBase]: 1975/3649 cut-off events. [2024-06-28 01:23:16,953 INFO L125 PetriNetUnfolderBase]: For 84257/84257 co-relation queries the response was YES. [2024-06-28 01:23:16,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23693 conditions, 3649 events. 1975/3649 cut-off events. For 84257/84257 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 25459 event pairs, 253 based on Foata normal form. 1/3544 useless extension candidates. Maximal degree in co-relation 23573. Up to 2085 conditions per place. [2024-06-28 01:23:16,993 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 228 selfloop transitions, 175 changer transitions 0/411 dead transitions. [2024-06-28 01:23:16,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 411 transitions, 6149 flow [2024-06-28 01:23:16,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 01:23:16,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-28 01:23:16,994 INFO L175 Difference]: Start difference. First operand has 261 places, 374 transitions, 4955 flow. Second operand 9 states and 170 transitions. [2024-06-28 01:23:16,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 411 transitions, 6149 flow [2024-06-28 01:23:17,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 411 transitions, 6000 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:17,231 INFO L231 Difference]: Finished difference. Result has 265 places, 379 transitions, 5389 flow [2024-06-28 01:23:17,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4808, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5389, PETRI_PLACES=265, PETRI_TRANSITIONS=379} [2024-06-28 01:23:17,231 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 223 predicate places. [2024-06-28 01:23:17,232 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 379 transitions, 5389 flow [2024-06-28 01:23:17,232 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) [2024-06-28 01:23:17,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:17,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:17,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:23:17,232 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:17,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:17,233 INFO L85 PathProgramCache]: Analyzing trace with hash 794012232, now seen corresponding path program 15 times [2024-06-28 01:23:17,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:17,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909713175] [2024-06-28 01:23:17,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:17,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:17,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:17,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909713175] [2024-06-28 01:23:17,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909713175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:17,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:17,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:17,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46496976] [2024-06-28 01:23:17,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:17,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:17,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:17,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:17,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:17,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:17,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 379 transitions, 5389 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) [2024-06-28 01:23:17,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:17,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:17,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:18,818 INFO L124 PetriNetUnfolderBase]: 1984/3802 cut-off events. [2024-06-28 01:23:18,818 INFO L125 PetriNetUnfolderBase]: For 90760/90760 co-relation queries the response was YES. [2024-06-28 01:23:18,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25309 conditions, 3802 events. 1984/3802 cut-off events. For 90760/90760 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 27478 event pairs, 275 based on Foata normal form. 2/3664 useless extension candidates. Maximal degree in co-relation 25187. Up to 2573 conditions per place. [2024-06-28 01:23:18,862 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 288 selfloop transitions, 117 changer transitions 0/413 dead transitions. [2024-06-28 01:23:18,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 413 transitions, 6431 flow [2024-06-28 01:23:18,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:18,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:23:18,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:23:18,863 INFO L175 Difference]: Start difference. First operand has 265 places, 379 transitions, 5389 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:23:18,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 413 transitions, 6431 flow [2024-06-28 01:23:19,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 413 transitions, 6250 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:19,123 INFO L231 Difference]: Finished difference. Result has 269 places, 381 transitions, 5509 flow [2024-06-28 01:23:19,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5212, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5509, PETRI_PLACES=269, PETRI_TRANSITIONS=381} [2024-06-28 01:23:19,124 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 227 predicate places. [2024-06-28 01:23:19,124 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 381 transitions, 5509 flow [2024-06-28 01:23:19,124 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) [2024-06-28 01:23:19,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:19,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:19,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:23:19,124 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:19,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:19,125 INFO L85 PathProgramCache]: Analyzing trace with hash 794279421, now seen corresponding path program 8 times [2024-06-28 01:23:19,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:19,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486897106] [2024-06-28 01:23:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:19,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:19,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:19,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:19,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486897106] [2024-06-28 01:23:19,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486897106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:19,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:19,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:19,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090826105] [2024-06-28 01:23:19,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:19,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:19,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:19,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:19,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:19,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 381 transitions, 5509 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) [2024-06-28 01:23:19,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:19,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:19,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:20,706 INFO L124 PetriNetUnfolderBase]: 2006/3819 cut-off events. [2024-06-28 01:23:20,706 INFO L125 PetriNetUnfolderBase]: For 92130/92130 co-relation queries the response was YES. [2024-06-28 01:23:20,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26020 conditions, 3819 events. 2006/3819 cut-off events. For 92130/92130 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 27526 event pairs, 387 based on Foata normal form. 2/3680 useless extension candidates. Maximal degree in co-relation 25896. Up to 2639 conditions per place. [2024-06-28 01:23:20,748 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 321 selfloop transitions, 89 changer transitions 0/418 dead transitions. [2024-06-28 01:23:20,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 418 transitions, 6676 flow [2024-06-28 01:23:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 01:23:20,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-28 01:23:20,750 INFO L175 Difference]: Start difference. First operand has 269 places, 381 transitions, 5509 flow. Second operand 9 states and 170 transitions. [2024-06-28 01:23:20,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 418 transitions, 6676 flow [2024-06-28 01:23:21,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 418 transitions, 6378 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:21,012 INFO L231 Difference]: Finished difference. Result has 270 places, 383 transitions, 5446 flow [2024-06-28 01:23:21,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5213, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5446, PETRI_PLACES=270, PETRI_TRANSITIONS=383} [2024-06-28 01:23:21,013 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 228 predicate places. [2024-06-28 01:23:21,013 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 383 transitions, 5446 flow [2024-06-28 01:23:21,013 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) [2024-06-28 01:23:21,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:21,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:21,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:23:21,013 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:21,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:21,014 INFO L85 PathProgramCache]: Analyzing trace with hash 794019951, now seen corresponding path program 9 times [2024-06-28 01:23:21,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:21,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341286514] [2024-06-28 01:23:21,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:21,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:21,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:21,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341286514] [2024-06-28 01:23:21,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341286514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:21,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:21,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:21,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013161875] [2024-06-28 01:23:21,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:21,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:21,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:21,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:21,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:21,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:21,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 383 transitions, 5446 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) [2024-06-28 01:23:21,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:21,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:21,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:22,729 INFO L124 PetriNetUnfolderBase]: 2004/3808 cut-off events. [2024-06-28 01:23:22,729 INFO L125 PetriNetUnfolderBase]: For 85523/85523 co-relation queries the response was YES. [2024-06-28 01:23:22,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25404 conditions, 3808 events. 2004/3808 cut-off events. For 85523/85523 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 27333 event pairs, 417 based on Foata normal form. 1/3676 useless extension candidates. Maximal degree in co-relation 25280. Up to 2966 conditions per place. [2024-06-28 01:23:22,781 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 343 selfloop transitions, 65 changer transitions 0/416 dead transitions. [2024-06-28 01:23:22,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 416 transitions, 6466 flow [2024-06-28 01:23:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:22,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 01:23:22,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-28 01:23:22,782 INFO L175 Difference]: Start difference. First operand has 270 places, 383 transitions, 5446 flow. Second operand 9 states and 163 transitions. [2024-06-28 01:23:22,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 416 transitions, 6466 flow [2024-06-28 01:23:23,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 416 transitions, 6290 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:23,041 INFO L231 Difference]: Finished difference. Result has 272 places, 386 transitions, 5475 flow [2024-06-28 01:23:23,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5271, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5475, PETRI_PLACES=272, PETRI_TRANSITIONS=386} [2024-06-28 01:23:23,042 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-28 01:23:23,042 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 386 transitions, 5475 flow [2024-06-28 01:23:23,042 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) [2024-06-28 01:23:23,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:23,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:23,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:23:23,043 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:23,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:23,043 INFO L85 PathProgramCache]: Analyzing trace with hash 794019672, now seen corresponding path program 16 times [2024-06-28 01:23:23,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:23,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112899269] [2024-06-28 01:23:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:23,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:23,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:23,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112899269] [2024-06-28 01:23:23,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112899269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:23,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:23,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:23,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246545991] [2024-06-28 01:23:23,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:23,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:23,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:23,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:23,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:23,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:23,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 386 transitions, 5475 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) [2024-06-28 01:23:23,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:23,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:23,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:24,736 INFO L124 PetriNetUnfolderBase]: 2002/3829 cut-off events. [2024-06-28 01:23:24,736 INFO L125 PetriNetUnfolderBase]: For 82874/82874 co-relation queries the response was YES. [2024-06-28 01:23:24,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25147 conditions, 3829 events. 2002/3829 cut-off events. For 82874/82874 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 27745 event pairs, 277 based on Foata normal form. 1/3688 useless extension candidates. Maximal degree in co-relation 25023. Up to 2546 conditions per place. [2024-06-28 01:23:24,779 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 286 selfloop transitions, 124 changer transitions 0/418 dead transitions. [2024-06-28 01:23:24,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 418 transitions, 6471 flow [2024-06-28 01:23:24,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:24,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 01:23:24,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-28 01:23:24,781 INFO L175 Difference]: Start difference. First operand has 272 places, 386 transitions, 5475 flow. Second operand 9 states and 170 transitions. [2024-06-28 01:23:24,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 418 transitions, 6471 flow [2024-06-28 01:23:25,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 418 transitions, 6298 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:25,075 INFO L231 Difference]: Finished difference. Result has 274 places, 386 transitions, 5559 flow [2024-06-28 01:23:25,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5302, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5559, PETRI_PLACES=274, PETRI_TRANSITIONS=386} [2024-06-28 01:23:25,076 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 232 predicate places. [2024-06-28 01:23:25,076 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 386 transitions, 5559 flow [2024-06-28 01:23:25,076 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) [2024-06-28 01:23:25,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:25,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:25,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:23:25,076 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:25,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:25,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1498931982, now seen corresponding path program 17 times [2024-06-28 01:23:25,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:25,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060244517] [2024-06-28 01:23:25,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:25,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:25,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:25,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060244517] [2024-06-28 01:23:25,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060244517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:25,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:25,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:25,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800948063] [2024-06-28 01:23:25,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:25,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:25,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:25,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:25,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:25,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:25,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 386 transitions, 5559 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) [2024-06-28 01:23:25,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:25,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:25,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:26,668 INFO L124 PetriNetUnfolderBase]: 2024/3812 cut-off events. [2024-06-28 01:23:26,669 INFO L125 PetriNetUnfolderBase]: For 87788/87788 co-relation queries the response was YES. [2024-06-28 01:23:26,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25740 conditions, 3812 events. 2024/3812 cut-off events. For 87788/87788 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 27250 event pairs, 247 based on Foata normal form. 2/3667 useless extension candidates. Maximal degree in co-relation 25615. Up to 2612 conditions per place. [2024-06-28 01:23:26,817 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 299 selfloop transitions, 114 changer transitions 0/421 dead transitions. [2024-06-28 01:23:26,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 421 transitions, 6645 flow [2024-06-28 01:23:26,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:26,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:23:26,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:23:26,818 INFO L175 Difference]: Start difference. First operand has 274 places, 386 transitions, 5559 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:23:26,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 421 transitions, 6645 flow [2024-06-28 01:23:27,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 421 transitions, 6261 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:27,066 INFO L231 Difference]: Finished difference. Result has 274 places, 389 transitions, 5497 flow [2024-06-28 01:23:27,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5181, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5497, PETRI_PLACES=274, PETRI_TRANSITIONS=389} [2024-06-28 01:23:27,066 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 232 predicate places. [2024-06-28 01:23:27,066 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 389 transitions, 5497 flow [2024-06-28 01:23:27,067 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) [2024-06-28 01:23:27,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:27,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:27,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:23:27,067 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:27,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:27,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1498924263, now seen corresponding path program 10 times [2024-06-28 01:23:27,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:27,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958058845] [2024-06-28 01:23:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:27,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:27,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:27,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958058845] [2024-06-28 01:23:27,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958058845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:27,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:27,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:27,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359920411] [2024-06-28 01:23:27,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:27,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:27,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:27,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:27,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:27,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 389 transitions, 5497 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) [2024-06-28 01:23:27,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:27,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:27,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:28,667 INFO L124 PetriNetUnfolderBase]: 2046/3869 cut-off events. [2024-06-28 01:23:28,667 INFO L125 PetriNetUnfolderBase]: For 87808/87808 co-relation queries the response was YES. [2024-06-28 01:23:28,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25791 conditions, 3869 events. 2046/3869 cut-off events. For 87808/87808 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 27786 event pairs, 311 based on Foata normal form. 2/3715 useless extension candidates. Maximal degree in co-relation 25666. Up to 3022 conditions per place. [2024-06-28 01:23:28,708 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 354 selfloop transitions, 60 changer transitions 0/422 dead transitions. [2024-06-28 01:23:28,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 422 transitions, 6539 flow [2024-06-28 01:23:28,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:28,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:28,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:23:28,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-28 01:23:28,710 INFO L175 Difference]: Start difference. First operand has 274 places, 389 transitions, 5497 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:23:28,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 422 transitions, 6539 flow [2024-06-28 01:23:28,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 422 transitions, 6245 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:28,966 INFO L231 Difference]: Finished difference. Result has 276 places, 391 transitions, 5382 flow [2024-06-28 01:23:28,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5203, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5382, PETRI_PLACES=276, PETRI_TRANSITIONS=391} [2024-06-28 01:23:28,967 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-06-28 01:23:28,967 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 391 transitions, 5382 flow [2024-06-28 01:23:28,967 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) [2024-06-28 01:23:28,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:28,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:28,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:23:28,968 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:28,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:28,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1011854104, now seen corresponding path program 18 times [2024-06-28 01:23:28,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:28,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081845213] [2024-06-28 01:23:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:28,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:29,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:29,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081845213] [2024-06-28 01:23:29,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081845213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:29,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:29,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:29,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105512039] [2024-06-28 01:23:29,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:29,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:29,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:29,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:29,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:29,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:29,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 391 transitions, 5382 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) [2024-06-28 01:23:29,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:29,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:29,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:30,726 INFO L124 PetriNetUnfolderBase]: 2057/3862 cut-off events. [2024-06-28 01:23:30,726 INFO L125 PetriNetUnfolderBase]: For 85114/85114 co-relation queries the response was YES. [2024-06-28 01:23:30,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25487 conditions, 3862 events. 2057/3862 cut-off events. For 85114/85114 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 27573 event pairs, 248 based on Foata normal form. 1/3717 useless extension candidates. Maximal degree in co-relation 25361. Up to 2641 conditions per place. [2024-06-28 01:23:30,770 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 300 selfloop transitions, 117 changer transitions 0/425 dead transitions. [2024-06-28 01:23:30,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 425 transitions, 6448 flow [2024-06-28 01:23:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:30,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 01:23:30,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-28 01:23:30,771 INFO L175 Difference]: Start difference. First operand has 276 places, 391 transitions, 5382 flow. Second operand 9 states and 170 transitions. [2024-06-28 01:23:30,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 425 transitions, 6448 flow [2024-06-28 01:23:31,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 425 transitions, 6289 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:31,066 INFO L231 Difference]: Finished difference. Result has 278 places, 393 transitions, 5516 flow [2024-06-28 01:23:31,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5223, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5516, PETRI_PLACES=278, PETRI_TRANSITIONS=393} [2024-06-28 01:23:31,067 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-28 01:23:31,067 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 393 transitions, 5516 flow [2024-06-28 01:23:31,067 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) [2024-06-28 01:23:31,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:31,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:31,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:23:31,068 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:31,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:31,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1498655152, now seen corresponding path program 1 times [2024-06-28 01:23:31,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:31,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665566831] [2024-06-28 01:23:31,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:31,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:31,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:31,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665566831] [2024-06-28 01:23:31,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665566831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:31,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:31,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:31,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573127903] [2024-06-28 01:23:31,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:31,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:31,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:31,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:31,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:32,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:23:32,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 393 transitions, 5516 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:32,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:32,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:23:32,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:32,911 INFO L124 PetriNetUnfolderBase]: 1937/3709 cut-off events. [2024-06-28 01:23:32,911 INFO L125 PetriNetUnfolderBase]: For 91458/91565 co-relation queries the response was YES. [2024-06-28 01:23:32,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24749 conditions, 3709 events. 1937/3709 cut-off events. For 91458/91565 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 26727 event pairs, 444 based on Foata normal form. 65/3632 useless extension candidates. Maximal degree in co-relation 24622. Up to 2777 conditions per place. [2024-06-28 01:23:32,956 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 340 selfloop transitions, 30 changer transitions 0/425 dead transitions. [2024-06-28 01:23:32,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 425 transitions, 6448 flow [2024-06-28 01:23:32,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:32,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:32,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 01:23:32,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-28 01:23:32,957 INFO L175 Difference]: Start difference. First operand has 278 places, 393 transitions, 5516 flow. Second operand 9 states and 169 transitions. [2024-06-28 01:23:32,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 425 transitions, 6448 flow [2024-06-28 01:23:33,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 425 transitions, 6171 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:33,200 INFO L231 Difference]: Finished difference. Result has 280 places, 395 transitions, 5350 flow [2024-06-28 01:23:33,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5239, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5350, PETRI_PLACES=280, PETRI_TRANSITIONS=395} [2024-06-28 01:23:33,200 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-28 01:23:33,201 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 395 transitions, 5350 flow [2024-06-28 01:23:33,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:33,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:33,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:33,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:23:33,201 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:33,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:33,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1012123153, now seen corresponding path program 11 times [2024-06-28 01:23:33,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:33,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095165673] [2024-06-28 01:23:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:33,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:33,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:33,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095165673] [2024-06-28 01:23:33,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095165673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:33,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:33,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:33,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23301723] [2024-06-28 01:23:33,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:33,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:33,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:33,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:33,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:34,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:34,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 395 transitions, 5350 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) [2024-06-28 01:23:34,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:34,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:34,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:34,896 INFO L124 PetriNetUnfolderBase]: 2092/3940 cut-off events. [2024-06-28 01:23:34,897 INFO L125 PetriNetUnfolderBase]: For 92779/92779 co-relation queries the response was YES. [2024-06-28 01:23:34,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25997 conditions, 3940 events. 2092/3940 cut-off events. For 92779/92779 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 28276 event pairs, 308 based on Foata normal form. 1/3785 useless extension candidates. Maximal degree in co-relation 25869. Up to 3048 conditions per place. [2024-06-28 01:23:34,944 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 356 selfloop transitions, 67 changer transitions 0/431 dead transitions. [2024-06-28 01:23:34,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 431 transitions, 6574 flow [2024-06-28 01:23:34,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:34,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:34,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:23:34,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-28 01:23:34,945 INFO L175 Difference]: Start difference. First operand has 280 places, 395 transitions, 5350 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:23:34,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 431 transitions, 6574 flow [2024-06-28 01:23:35,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 431 transitions, 6479 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:35,239 INFO L231 Difference]: Finished difference. Result has 283 places, 400 transitions, 5520 flow [2024-06-28 01:23:35,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5255, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5520, PETRI_PLACES=283, PETRI_TRANSITIONS=400} [2024-06-28 01:23:35,240 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-06-28 01:23:35,240 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 400 transitions, 5520 flow [2024-06-28 01:23:35,240 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) [2024-06-28 01:23:35,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:35,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:35,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:23:35,241 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:35,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:35,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1184639133, now seen corresponding path program 12 times [2024-06-28 01:23:35,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:35,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355996814] [2024-06-28 01:23:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:35,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:36,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:36,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355996814] [2024-06-28 01:23:36,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355996814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:36,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:36,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:36,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410767197] [2024-06-28 01:23:36,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:36,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:36,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:36,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:36,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:36,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 400 transitions, 5520 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) [2024-06-28 01:23:36,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:36,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:36,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:37,192 INFO L124 PetriNetUnfolderBase]: 2103/4155 cut-off events. [2024-06-28 01:23:37,192 INFO L125 PetriNetUnfolderBase]: For 97759/97759 co-relation queries the response was YES. [2024-06-28 01:23:37,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26622 conditions, 4155 events. 2103/4155 cut-off events. For 97759/97759 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 30951 event pairs, 658 based on Foata normal form. 1/3970 useless extension candidates. Maximal degree in co-relation 26492. Up to 3264 conditions per place. [2024-06-28 01:23:37,234 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 409 selfloop transitions, 16 changer transitions 0/433 dead transitions. [2024-06-28 01:23:37,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 433 transitions, 6585 flow [2024-06-28 01:23:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:37,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:23:37,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-06-28 01:23:37,236 INFO L175 Difference]: Start difference. First operand has 283 places, 400 transitions, 5520 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:23:37,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 433 transitions, 6585 flow [2024-06-28 01:23:37,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 433 transitions, 6453 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:37,506 INFO L231 Difference]: Finished difference. Result has 288 places, 403 transitions, 5499 flow [2024-06-28 01:23:37,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5388, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5499, PETRI_PLACES=288, PETRI_TRANSITIONS=403} [2024-06-28 01:23:37,506 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-28 01:23:37,506 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 403 transitions, 5499 flow [2024-06-28 01:23:37,506 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) [2024-06-28 01:23:37,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:37,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:37,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:23:37,507 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:37,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:37,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1498665072, now seen corresponding path program 19 times [2024-06-28 01:23:37,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:37,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150216775] [2024-06-28 01:23:37,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:37,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:38,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:38,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150216775] [2024-06-28 01:23:38,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150216775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:38,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:38,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:38,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089089741] [2024-06-28 01:23:38,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:38,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:38,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:38,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:38,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:38,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 403 transitions, 5499 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) [2024-06-28 01:23:38,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:38,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:38,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:39,169 INFO L124 PetriNetUnfolderBase]: 2114/3956 cut-off events. [2024-06-28 01:23:39,170 INFO L125 PetriNetUnfolderBase]: For 96702/96702 co-relation queries the response was YES. [2024-06-28 01:23:39,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26589 conditions, 3956 events. 2114/3956 cut-off events. For 96702/96702 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 28293 event pairs, 249 based on Foata normal form. 1/3809 useless extension candidates. Maximal degree in co-relation 26456. Up to 2696 conditions per place. [2024-06-28 01:23:39,216 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 308 selfloop transitions, 121 changer transitions 0/437 dead transitions. [2024-06-28 01:23:39,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 437 transitions, 6597 flow [2024-06-28 01:23:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:39,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:39,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 01:23:39,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2024-06-28 01:23:39,218 INFO L175 Difference]: Start difference. First operand has 288 places, 403 transitions, 5499 flow. Second operand 9 states and 172 transitions. [2024-06-28 01:23:39,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 437 transitions, 6597 flow [2024-06-28 01:23:39,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 437 transitions, 6510 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:39,552 INFO L231 Difference]: Finished difference. Result has 291 places, 405 transitions, 5717 flow [2024-06-28 01:23:39,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5412, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5717, PETRI_PLACES=291, PETRI_TRANSITIONS=405} [2024-06-28 01:23:39,552 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 249 predicate places. [2024-06-28 01:23:39,553 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 405 transitions, 5717 flow [2024-06-28 01:23:39,553 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) [2024-06-28 01:23:39,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:39,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:39,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:23:39,553 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:39,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:39,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1012113853, now seen corresponding path program 13 times [2024-06-28 01:23:39,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:39,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671411570] [2024-06-28 01:23:39,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:39,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:40,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:40,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671411570] [2024-06-28 01:23:40,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671411570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:40,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:40,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:40,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264532257] [2024-06-28 01:23:40,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:40,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:40,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:40,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:40,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:40,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:40,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 405 transitions, 5717 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) [2024-06-28 01:23:40,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:40,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:40,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:41,317 INFO L124 PetriNetUnfolderBase]: 2112/3977 cut-off events. [2024-06-28 01:23:41,317 INFO L125 PetriNetUnfolderBase]: For 100585/100585 co-relation queries the response was YES. [2024-06-28 01:23:41,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27076 conditions, 3977 events. 2112/3977 cut-off events. For 100585/100585 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 28587 event pairs, 310 based on Foata normal form. 1/3820 useless extension candidates. Maximal degree in co-relation 26942. Up to 3080 conditions per place. [2024-06-28 01:23:41,363 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 361 selfloop transitions, 67 changer transitions 0/436 dead transitions. [2024-06-28 01:23:41,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 436 transitions, 6738 flow [2024-06-28 01:23:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:23:41,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-28 01:23:41,364 INFO L175 Difference]: Start difference. First operand has 291 places, 405 transitions, 5717 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:23:41,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 436 transitions, 6738 flow [2024-06-28 01:23:41,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 436 transitions, 6407 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:41,741 INFO L231 Difference]: Finished difference. Result has 293 places, 406 transitions, 5540 flow [2024-06-28 01:23:41,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5392, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5540, PETRI_PLACES=293, PETRI_TRANSITIONS=406} [2024-06-28 01:23:41,741 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 251 predicate places. [2024-06-28 01:23:41,741 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 406 transitions, 5540 flow [2024-06-28 01:23:41,742 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) [2024-06-28 01:23:41,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:41,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:41,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:23:41,742 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:41,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:41,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1184965842, now seen corresponding path program 20 times [2024-06-28 01:23:41,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:41,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112179129] [2024-06-28 01:23:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:41,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:42,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:42,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112179129] [2024-06-28 01:23:42,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112179129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:42,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:42,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:42,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544852886] [2024-06-28 01:23:42,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:42,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:42,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:42,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:42,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:42,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:42,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 406 transitions, 5540 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) [2024-06-28 01:23:42,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:42,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:42,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:43,513 INFO L124 PetriNetUnfolderBase]: 2113/4033 cut-off events. [2024-06-28 01:23:43,513 INFO L125 PetriNetUnfolderBase]: For 96689/96689 co-relation queries the response was YES. [2024-06-28 01:23:43,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26570 conditions, 4033 events. 2113/4033 cut-off events. For 96689/96689 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 29174 event pairs, 244 based on Foata normal form. 1/3864 useless extension candidates. Maximal degree in co-relation 26435. Up to 2122 conditions per place. [2024-06-28 01:23:43,560 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 233 selfloop transitions, 198 changer transitions 0/439 dead transitions. [2024-06-28 01:23:43,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 439 transitions, 6630 flow [2024-06-28 01:23:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:43,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:23:43,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-28 01:23:43,562 INFO L175 Difference]: Start difference. First operand has 293 places, 406 transitions, 5540 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:23:43,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 439 transitions, 6630 flow [2024-06-28 01:23:43,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 439 transitions, 6499 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:43,889 INFO L231 Difference]: Finished difference. Result has 297 places, 408 transitions, 5872 flow [2024-06-28 01:23:43,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5409, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5872, PETRI_PLACES=297, PETRI_TRANSITIONS=408} [2024-06-28 01:23:43,890 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 255 predicate places. [2024-06-28 01:23:43,890 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 408 transitions, 5872 flow [2024-06-28 01:23:43,890 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) [2024-06-28 01:23:43,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:43,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:43,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:23:43,891 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:43,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:43,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1184965563, now seen corresponding path program 14 times [2024-06-28 01:23:43,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:43,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852062306] [2024-06-28 01:23:43,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:43,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:44,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:44,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852062306] [2024-06-28 01:23:44,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852062306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:44,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:44,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:44,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907911683] [2024-06-28 01:23:44,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:44,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:44,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:44,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:44,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:44,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:44,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 408 transitions, 5872 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) [2024-06-28 01:23:44,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:44,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:44,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:45,713 INFO L124 PetriNetUnfolderBase]: 2127/4106 cut-off events. [2024-06-28 01:23:45,713 INFO L125 PetriNetUnfolderBase]: For 106758/106758 co-relation queries the response was YES. [2024-06-28 01:23:45,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27873 conditions, 4106 events. 2127/4106 cut-off events. For 106758/106758 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 30062 event pairs, 297 based on Foata normal form. 1/3925 useless extension candidates. Maximal degree in co-relation 27737. Up to 2733 conditions per place. [2024-06-28 01:23:45,758 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 330 selfloop transitions, 109 changer transitions 0/447 dead transitions. [2024-06-28 01:23:45,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 447 transitions, 7196 flow [2024-06-28 01:23:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:45,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 01:23:45,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-28 01:23:45,760 INFO L175 Difference]: Start difference. First operand has 297 places, 408 transitions, 5872 flow. Second operand 9 states and 169 transitions. [2024-06-28 01:23:45,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 447 transitions, 7196 flow [2024-06-28 01:23:46,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 447 transitions, 6749 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:46,107 INFO L231 Difference]: Finished difference. Result has 299 places, 416 transitions, 5885 flow [2024-06-28 01:23:46,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5425, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5885, PETRI_PLACES=299, PETRI_TRANSITIONS=416} [2024-06-28 01:23:46,108 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 257 predicate places. [2024-06-28 01:23:46,108 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 416 transitions, 5885 flow [2024-06-28 01:23:46,108 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) [2024-06-28 01:23:46,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:46,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:46,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:23:46,108 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:46,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1325822383, now seen corresponding path program 15 times [2024-06-28 01:23:46,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:46,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133517776] [2024-06-28 01:23:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:46,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:46,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:46,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133517776] [2024-06-28 01:23:46,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133517776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:46,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:46,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:46,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328433273] [2024-06-28 01:23:46,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:46,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:46,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:46,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:46,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:46,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:46,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 416 transitions, 5885 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) [2024-06-28 01:23:46,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:46,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:46,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:47,868 INFO L124 PetriNetUnfolderBase]: 2125/4103 cut-off events. [2024-06-28 01:23:47,869 INFO L125 PetriNetUnfolderBase]: For 104711/104711 co-relation queries the response was YES. [2024-06-28 01:23:47,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27479 conditions, 4103 events. 2125/4103 cut-off events. For 104711/104711 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 30093 event pairs, 297 based on Foata normal form. 1/3922 useless extension candidates. Maximal degree in co-relation 27341. Up to 2731 conditions per place. [2024-06-28 01:23:47,922 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 330 selfloop transitions, 108 changer transitions 0/446 dead transitions. [2024-06-28 01:23:47,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 446 transitions, 6911 flow [2024-06-28 01:23:47,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 01:23:47,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-28 01:23:47,924 INFO L175 Difference]: Start difference. First operand has 299 places, 416 transitions, 5885 flow. Second operand 9 states and 169 transitions. [2024-06-28 01:23:47,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 446 transitions, 6911 flow [2024-06-28 01:23:48,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 446 transitions, 6725 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-06-28 01:23:48,319 INFO L231 Difference]: Finished difference. Result has 304 places, 416 transitions, 5920 flow [2024-06-28 01:23:48,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5699, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5920, PETRI_PLACES=304, PETRI_TRANSITIONS=416} [2024-06-28 01:23:48,320 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-06-28 01:23:48,320 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 416 transitions, 5920 flow [2024-06-28 01:23:48,320 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) [2024-06-28 01:23:48,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:48,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:48,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:23:48,321 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:48,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:48,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1325822724, now seen corresponding path program 2 times [2024-06-28 01:23:48,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:48,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327255724] [2024-06-28 01:23:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:48,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:49,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:49,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327255724] [2024-06-28 01:23:49,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327255724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:49,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:49,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:23:49,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350796590] [2024-06-28 01:23:49,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:49,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:23:49,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:49,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:23:49,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:23:49,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:23:49,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 416 transitions, 5920 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:49,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:49,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:23:49,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:50,670 INFO L124 PetriNetUnfolderBase]: 1982/3884 cut-off events. [2024-06-28 01:23:50,670 INFO L125 PetriNetUnfolderBase]: For 101297/101413 co-relation queries the response was YES. [2024-06-28 01:23:50,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25966 conditions, 3884 events. 1982/3884 cut-off events. For 101297/101413 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 28512 event pairs, 439 based on Foata normal form. 74/3794 useless extension candidates. Maximal degree in co-relation 25826. Up to 2734 conditions per place. [2024-06-28 01:23:50,722 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 341 selfloop transitions, 43 changer transitions 0/448 dead transitions. [2024-06-28 01:23:50,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 448 transitions, 6884 flow [2024-06-28 01:23:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 01:23:50,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2024-06-28 01:23:50,736 INFO L175 Difference]: Start difference. First operand has 304 places, 416 transitions, 5920 flow. Second operand 9 states and 172 transitions. [2024-06-28 01:23:50,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 448 transitions, 6884 flow [2024-06-28 01:23:51,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 448 transitions, 6656 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:51,138 INFO L231 Difference]: Finished difference. Result has 305 places, 418 transitions, 5833 flow [2024-06-28 01:23:51,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5692, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5833, PETRI_PLACES=305, PETRI_TRANSITIONS=418} [2024-06-28 01:23:51,148 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-06-28 01:23:51,148 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 418 transitions, 5833 flow [2024-06-28 01:23:51,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:23:51,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:51,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:51,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:23:51,149 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:51,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:51,149 INFO L85 PathProgramCache]: Analyzing trace with hash -733096096, now seen corresponding path program 1 times [2024-06-28 01:23:51,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:51,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050420564] [2024-06-28 01:23:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:51,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:51,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:51,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050420564] [2024-06-28 01:23:51,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050420564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:51,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:51,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:23:51,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313903145] [2024-06-28 01:23:51,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:51,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:23:51,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:51,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:23:51,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:23:51,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-28 01:23:51,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 418 transitions, 5833 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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) [2024-06-28 01:23:51,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:51,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-28 01:23:51,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:52,387 INFO L124 PetriNetUnfolderBase]: 3175/5641 cut-off events. [2024-06-28 01:23:52,387 INFO L125 PetriNetUnfolderBase]: For 126305/126485 co-relation queries the response was YES. [2024-06-28 01:23:52,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38602 conditions, 5641 events. 3175/5641 cut-off events. For 126305/126485 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 40049 event pairs, 527 based on Foata normal form. 97/5522 useless extension candidates. Maximal degree in co-relation 38462. Up to 3140 conditions per place. [2024-06-28 01:23:52,462 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 437 selfloop transitions, 39 changer transitions 326/925 dead transitions. [2024-06-28 01:23:52,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 925 transitions, 14033 flow [2024-06-28 01:23:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:23:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:23:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:23:52,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6118421052631579 [2024-06-28 01:23:52,463 INFO L175 Difference]: Start difference. First operand has 305 places, 418 transitions, 5833 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:23:52,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 925 transitions, 14033 flow [2024-06-28 01:23:52,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 925 transitions, 13849 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:52,922 INFO L231 Difference]: Finished difference. Result has 311 places, 423 transitions, 5971 flow [2024-06-28 01:23:52,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5708, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5971, PETRI_PLACES=311, PETRI_TRANSITIONS=423} [2024-06-28 01:23:52,923 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2024-06-28 01:23:52,923 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 423 transitions, 5971 flow [2024-06-28 01:23:52,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 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) [2024-06-28 01:23:52,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:52,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:52,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:23:52,923 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:52,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:52,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1193830624, now seen corresponding path program 1 times [2024-06-28 01:23:52,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:52,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078042256] [2024-06-28 01:23:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:52,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:53,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:53,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078042256] [2024-06-28 01:23:53,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078042256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:53,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:53,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:53,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776796050] [2024-06-28 01:23:53,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:53,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:53,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:53,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:53,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:53,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:53,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 423 transitions, 5971 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) [2024-06-28 01:23:53,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:53,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:53,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:54,936 INFO L124 PetriNetUnfolderBase]: 2150/4148 cut-off events. [2024-06-28 01:23:54,937 INFO L125 PetriNetUnfolderBase]: For 112919/113014 co-relation queries the response was YES. [2024-06-28 01:23:54,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29290 conditions, 4148 events. 2150/4148 cut-off events. For 112919/113014 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 30233 event pairs, 483 based on Foata normal form. 28/4135 useless extension candidates. Maximal degree in co-relation 29144. Up to 3220 conditions per place. [2024-06-28 01:23:54,996 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 350 selfloop transitions, 97 changer transitions 2/458 dead transitions. [2024-06-28 01:23:54,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 458 transitions, 7079 flow [2024-06-28 01:23:54,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:54,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-28 01:23:54,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-28 01:23:54,998 INFO L175 Difference]: Start difference. First operand has 311 places, 423 transitions, 5971 flow. Second operand 11 states and 200 transitions. [2024-06-28 01:23:54,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 458 transitions, 7079 flow [2024-06-28 01:23:55,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 458 transitions, 7027 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-28 01:23:55,401 INFO L231 Difference]: Finished difference. Result has 318 places, 423 transitions, 6191 flow [2024-06-28 01:23:55,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5923, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6191, PETRI_PLACES=318, PETRI_TRANSITIONS=423} [2024-06-28 01:23:55,402 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 276 predicate places. [2024-06-28 01:23:55,402 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 423 transitions, 6191 flow [2024-06-28 01:23:55,402 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) [2024-06-28 01:23:55,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:55,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:55,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:23:55,403 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:55,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:55,403 INFO L85 PathProgramCache]: Analyzing trace with hash 977075332, now seen corresponding path program 2 times [2024-06-28 01:23:55,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:55,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770871210] [2024-06-28 01:23:55,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:55,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:56,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:56,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770871210] [2024-06-28 01:23:56,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770871210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:56,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:56,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:56,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036987921] [2024-06-28 01:23:56,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:56,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:56,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:56,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:56,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:56,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:56,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 423 transitions, 6191 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) [2024-06-28 01:23:56,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:56,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:56,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:57,262 INFO L124 PetriNetUnfolderBase]: 2159/4122 cut-off events. [2024-06-28 01:23:57,262 INFO L125 PetriNetUnfolderBase]: For 118271/118380 co-relation queries the response was YES. [2024-06-28 01:23:57,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29565 conditions, 4122 events. 2159/4122 cut-off events. For 118271/118380 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 29824 event pairs, 518 based on Foata normal form. 34/4115 useless extension candidates. Maximal degree in co-relation 29417. Up to 3244 conditions per place. [2024-06-28 01:23:57,316 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 360 selfloop transitions, 93 changer transitions 0/462 dead transitions. [2024-06-28 01:23:57,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 462 transitions, 7393 flow [2024-06-28 01:23:57,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:57,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 01:23:57,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-06-28 01:23:57,317 INFO L175 Difference]: Start difference. First operand has 318 places, 423 transitions, 6191 flow. Second operand 11 states and 199 transitions. [2024-06-28 01:23:57,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 462 transitions, 7393 flow [2024-06-28 01:23:57,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 462 transitions, 7044 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:57,761 INFO L231 Difference]: Finished difference. Result has 319 places, 427 transitions, 6200 flow [2024-06-28 01:23:57,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5912, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6200, PETRI_PLACES=319, PETRI_TRANSITIONS=427} [2024-06-28 01:23:57,773 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2024-06-28 01:23:57,773 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 427 transitions, 6200 flow [2024-06-28 01:23:57,773 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) [2024-06-28 01:23:57,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:57,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:57,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:23:57,774 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:57,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:57,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1597357580, now seen corresponding path program 3 times [2024-06-28 01:23:57,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:57,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966674744] [2024-06-28 01:23:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:57,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:58,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:58,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966674744] [2024-06-28 01:23:58,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966674744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:58,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:58,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:58,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177955299] [2024-06-28 01:23:58,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:58,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:58,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:58,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:58,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:58,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:58,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 427 transitions, 6200 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) [2024-06-28 01:23:58,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:58,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:58,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:59,862 INFO L124 PetriNetUnfolderBase]: 2184/4164 cut-off events. [2024-06-28 01:23:59,863 INFO L125 PetriNetUnfolderBase]: For 121922/122023 co-relation queries the response was YES. [2024-06-28 01:23:59,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29533 conditions, 4164 events. 2184/4164 cut-off events. For 121922/122023 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 30214 event pairs, 502 based on Foata normal form. 34/4152 useless extension candidates. Maximal degree in co-relation 29386. Up to 3194 conditions per place. [2024-06-28 01:23:59,919 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 366 selfloop transitions, 101 changer transitions 0/476 dead transitions. [2024-06-28 01:23:59,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 476 transitions, 7506 flow [2024-06-28 01:23:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 01:23:59,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2024-06-28 01:23:59,920 INFO L175 Difference]: Start difference. First operand has 319 places, 427 transitions, 6200 flow. Second operand 11 states and 204 transitions. [2024-06-28 01:23:59,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 476 transitions, 7506 flow [2024-06-28 01:24:00,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 476 transitions, 7188 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:00,316 INFO L231 Difference]: Finished difference. Result has 321 places, 433 transitions, 6285 flow [2024-06-28 01:24:00,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5954, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6285, PETRI_PLACES=321, PETRI_TRANSITIONS=433} [2024-06-28 01:24:00,317 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-06-28 01:24:00,317 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 433 transitions, 6285 flow [2024-06-28 01:24:00,317 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) [2024-06-28 01:24:00,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:00,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:00,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:24:00,318 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:00,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:00,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2040793522, now seen corresponding path program 4 times [2024-06-28 01:24:00,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:00,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730404116] [2024-06-28 01:24:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:00,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:01,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:01,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730404116] [2024-06-28 01:24:01,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730404116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:01,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:01,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:01,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256917338] [2024-06-28 01:24:01,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:01,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:01,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:01,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 433 transitions, 6285 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) [2024-06-28 01:24:01,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:01,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:01,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:02,457 INFO L124 PetriNetUnfolderBase]: 2186/4183 cut-off events. [2024-06-28 01:24:02,457 INFO L125 PetriNetUnfolderBase]: For 123122/123229 co-relation queries the response was YES. [2024-06-28 01:24:02,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29618 conditions, 4183 events. 2186/4183 cut-off events. For 123122/123229 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 30292 event pairs, 502 based on Foata normal form. 45/4191 useless extension candidates. Maximal degree in co-relation 29470. Up to 3220 conditions per place. [2024-06-28 01:24:02,512 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 376 selfloop transitions, 89 changer transitions 0/474 dead transitions. [2024-06-28 01:24:02,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 474 transitions, 7493 flow [2024-06-28 01:24:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 01:24:02,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-06-28 01:24:02,514 INFO L175 Difference]: Start difference. First operand has 321 places, 433 transitions, 6285 flow. Second operand 11 states and 201 transitions. [2024-06-28 01:24:02,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 474 transitions, 7493 flow [2024-06-28 01:24:02,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 474 transitions, 7234 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:02,988 INFO L231 Difference]: Finished difference. Result has 323 places, 435 transitions, 6299 flow [2024-06-28 01:24:02,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6026, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6299, PETRI_PLACES=323, PETRI_TRANSITIONS=435} [2024-06-28 01:24:02,989 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 281 predicate places. [2024-06-28 01:24:02,989 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 435 transitions, 6299 flow [2024-06-28 01:24:02,989 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) [2024-06-28 01:24:02,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:02,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:02,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:24:02,989 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:02,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2041985100, now seen corresponding path program 1 times [2024-06-28 01:24:02,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:02,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188156447] [2024-06-28 01:24:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:03,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:03,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188156447] [2024-06-28 01:24:03,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188156447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:03,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:03,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:03,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497839745] [2024-06-28 01:24:03,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:03,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:03,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:03,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:03,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:03,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:03,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 435 transitions, 6299 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) [2024-06-28 01:24:03,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:03,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:03,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:04,843 INFO L124 PetriNetUnfolderBase]: 2211/4222 cut-off events. [2024-06-28 01:24:04,844 INFO L125 PetriNetUnfolderBase]: For 129870/129977 co-relation queries the response was YES. [2024-06-28 01:24:04,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29938 conditions, 4222 events. 2211/4222 cut-off events. For 129870/129977 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30579 event pairs, 500 based on Foata normal form. 46/4230 useless extension candidates. Maximal degree in co-relation 29789. Up to 3240 conditions per place. [2024-06-28 01:24:04,900 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 378 selfloop transitions, 90 changer transitions 0/477 dead transitions. [2024-06-28 01:24:04,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 477 transitions, 7507 flow [2024-06-28 01:24:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:04,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-28 01:24:04,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-06-28 01:24:04,901 INFO L175 Difference]: Start difference. First operand has 323 places, 435 transitions, 6299 flow. Second operand 11 states and 202 transitions. [2024-06-28 01:24:04,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 477 transitions, 7507 flow [2024-06-28 01:24:05,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 477 transitions, 7254 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:05,359 INFO L231 Difference]: Finished difference. Result has 325 places, 438 transitions, 6318 flow [2024-06-28 01:24:05,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6046, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6318, PETRI_PLACES=325, PETRI_TRANSITIONS=438} [2024-06-28 01:24:05,360 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 283 predicate places. [2024-06-28 01:24:05,360 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 438 transitions, 6318 flow [2024-06-28 01:24:05,360 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) [2024-06-28 01:24:05,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:05,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:05,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:24:05,360 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:05,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:05,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1032464120, now seen corresponding path program 5 times [2024-06-28 01:24:05,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:05,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844772132] [2024-06-28 01:24:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:05,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:06,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:06,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844772132] [2024-06-28 01:24:06,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844772132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:06,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:06,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:06,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103054638] [2024-06-28 01:24:06,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:06,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:06,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:06,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:06,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:06,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:06,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 438 transitions, 6318 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) [2024-06-28 01:24:06,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:06,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:06,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:07,494 INFO L124 PetriNetUnfolderBase]: 2246/4304 cut-off events. [2024-06-28 01:24:07,495 INFO L125 PetriNetUnfolderBase]: For 131236/131339 co-relation queries the response was YES. [2024-06-28 01:24:07,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30539 conditions, 4304 events. 2246/4304 cut-off events. For 131236/131339 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 31386 event pairs, 549 based on Foata normal form. 31/4291 useless extension candidates. Maximal degree in co-relation 30389. Up to 3358 conditions per place. [2024-06-28 01:24:07,550 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 371 selfloop transitions, 101 changer transitions 0/481 dead transitions. [2024-06-28 01:24:07,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 481 transitions, 7548 flow [2024-06-28 01:24:07,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:07,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-28 01:24:07,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-28 01:24:07,551 INFO L175 Difference]: Start difference. First operand has 325 places, 438 transitions, 6318 flow. Second operand 11 states and 200 transitions. [2024-06-28 01:24:07,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 481 transitions, 7548 flow [2024-06-28 01:24:08,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 481 transitions, 7302 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:08,012 INFO L231 Difference]: Finished difference. Result has 327 places, 446 transitions, 6442 flow [2024-06-28 01:24:08,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6072, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6442, PETRI_PLACES=327, PETRI_TRANSITIONS=446} [2024-06-28 01:24:08,013 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 285 predicate places. [2024-06-28 01:24:08,013 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 446 transitions, 6442 flow [2024-06-28 01:24:08,013 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) [2024-06-28 01:24:08,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:08,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:08,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:24:08,014 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:08,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1181896520, now seen corresponding path program 6 times [2024-06-28 01:24:08,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:08,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946555122] [2024-06-28 01:24:08,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:08,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:09,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946555122] [2024-06-28 01:24:09,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946555122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:09,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:09,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:09,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036753049] [2024-06-28 01:24:09,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:09,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:09,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:09,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:09,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:09,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 446 transitions, 6442 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) [2024-06-28 01:24:09,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:09,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:09,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:10,411 INFO L124 PetriNetUnfolderBase]: 2264/4339 cut-off events. [2024-06-28 01:24:10,411 INFO L125 PetriNetUnfolderBase]: For 136659/136772 co-relation queries the response was YES. [2024-06-28 01:24:10,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30803 conditions, 4339 events. 2264/4339 cut-off events. For 136659/136772 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 31694 event pairs, 533 based on Foata normal form. 37/4335 useless extension candidates. Maximal degree in co-relation 30652. Up to 3339 conditions per place. [2024-06-28 01:24:10,468 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 389 selfloop transitions, 89 changer transitions 0/487 dead transitions. [2024-06-28 01:24:10,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 487 transitions, 7684 flow [2024-06-28 01:24:10,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:10,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:10,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 01:24:10,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-06-28 01:24:10,470 INFO L175 Difference]: Start difference. First operand has 327 places, 446 transitions, 6442 flow. Second operand 11 states and 201 transitions. [2024-06-28 01:24:10,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 487 transitions, 7684 flow [2024-06-28 01:24:10,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 487 transitions, 7449 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:10,960 INFO L231 Difference]: Finished difference. Result has 330 places, 450 transitions, 6504 flow [2024-06-28 01:24:10,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6207, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6504, PETRI_PLACES=330, PETRI_TRANSITIONS=450} [2024-06-28 01:24:10,961 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 288 predicate places. [2024-06-28 01:24:10,961 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 450 transitions, 6504 flow [2024-06-28 01:24:10,961 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) [2024-06-28 01:24:10,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:10,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:10,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:24:10,961 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:10,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:10,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1183088098, now seen corresponding path program 2 times [2024-06-28 01:24:10,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:10,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187402800] [2024-06-28 01:24:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:10,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:11,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:11,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187402800] [2024-06-28 01:24:11,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187402800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:11,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:11,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:11,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361911364] [2024-06-28 01:24:11,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:11,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:11,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:11,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:11,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:11,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:11,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 450 transitions, 6504 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) [2024-06-28 01:24:11,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:11,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:11,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:12,972 INFO L124 PetriNetUnfolderBase]: 2322/4411 cut-off events. [2024-06-28 01:24:12,973 INFO L125 PetriNetUnfolderBase]: For 150310/150443 co-relation queries the response was YES. [2024-06-28 01:24:13,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31581 conditions, 4411 events. 2322/4411 cut-off events. For 150310/150443 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 32052 event pairs, 536 based on Foata normal form. 52/4422 useless extension candidates. Maximal degree in co-relation 31429. Up to 3377 conditions per place. [2024-06-28 01:24:13,031 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 395 selfloop transitions, 90 changer transitions 0/494 dead transitions. [2024-06-28 01:24:13,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 494 transitions, 7778 flow [2024-06-28 01:24:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:13,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:24:13,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-28 01:24:13,033 INFO L175 Difference]: Start difference. First operand has 330 places, 450 transitions, 6504 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:24:13,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 494 transitions, 7778 flow [2024-06-28 01:24:13,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 494 transitions, 7521 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:13,510 INFO L231 Difference]: Finished difference. Result has 332 places, 455 transitions, 6545 flow [2024-06-28 01:24:13,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6247, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6545, PETRI_PLACES=332, PETRI_TRANSITIONS=455} [2024-06-28 01:24:13,511 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 290 predicate places. [2024-06-28 01:24:13,511 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 455 transitions, 6545 flow [2024-06-28 01:24:13,511 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) [2024-06-28 01:24:13,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:13,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:13,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:24:13,512 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:13,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:13,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1346642172, now seen corresponding path program 3 times [2024-06-28 01:24:13,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:13,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069198100] [2024-06-28 01:24:13,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:13,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:14,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:14,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069198100] [2024-06-28 01:24:14,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069198100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:14,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:14,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:14,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678567694] [2024-06-28 01:24:14,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:14,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:14,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:14,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:14,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:14,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:14,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 455 transitions, 6545 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) [2024-06-28 01:24:14,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:14,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:14,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:15,557 INFO L124 PetriNetUnfolderBase]: 2366/4513 cut-off events. [2024-06-28 01:24:15,557 INFO L125 PetriNetUnfolderBase]: For 155210/155295 co-relation queries the response was YES. [2024-06-28 01:24:15,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32534 conditions, 4513 events. 2366/4513 cut-off events. For 155210/155295 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 33027 event pairs, 511 based on Foata normal form. 26/4496 useless extension candidates. Maximal degree in co-relation 32381. Up to 3374 conditions per place. [2024-06-28 01:24:15,607 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 390 selfloop transitions, 100 changer transitions 0/499 dead transitions. [2024-06-28 01:24:15,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 499 transitions, 7871 flow [2024-06-28 01:24:15,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:15,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:24:15,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-28 01:24:15,608 INFO L175 Difference]: Start difference. First operand has 332 places, 455 transitions, 6545 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:24:15,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 499 transitions, 7871 flow [2024-06-28 01:24:16,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 499 transitions, 7643 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:16,112 INFO L231 Difference]: Finished difference. Result has 335 places, 458 transitions, 6626 flow [2024-06-28 01:24:16,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6317, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6626, PETRI_PLACES=335, PETRI_TRANSITIONS=458} [2024-06-28 01:24:16,113 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 293 predicate places. [2024-06-28 01:24:16,113 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 458 transitions, 6626 flow [2024-06-28 01:24:16,113 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) [2024-06-28 01:24:16,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:16,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:16,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:24:16,114 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:16,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:16,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1376425174, now seen corresponding path program 7 times [2024-06-28 01:24:16,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:16,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061826357] [2024-06-28 01:24:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:16,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:17,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:17,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:17,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061826357] [2024-06-28 01:24:17,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061826357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:17,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:17,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:17,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776235258] [2024-06-28 01:24:17,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:17,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:17,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:17,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:17,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:17,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:17,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 458 transitions, 6626 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) [2024-06-28 01:24:17,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:17,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:17,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:18,393 INFO L124 PetriNetUnfolderBase]: 2377/4536 cut-off events. [2024-06-28 01:24:18,393 INFO L125 PetriNetUnfolderBase]: For 153345/153436 co-relation queries the response was YES. [2024-06-28 01:24:18,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32796 conditions, 4536 events. 2377/4536 cut-off events. For 153345/153436 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 33276 event pairs, 524 based on Foata normal form. 27/4518 useless extension candidates. Maximal degree in co-relation 32642. Up to 3428 conditions per place. [2024-06-28 01:24:18,452 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 392 selfloop transitions, 99 changer transitions 0/500 dead transitions. [2024-06-28 01:24:18,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 500 transitions, 7946 flow [2024-06-28 01:24:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:24:18,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-28 01:24:18,454 INFO L175 Difference]: Start difference. First operand has 335 places, 458 transitions, 6626 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:24:18,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 500 transitions, 7946 flow [2024-06-28 01:24:18,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 500 transitions, 7649 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-06-28 01:24:18,936 INFO L231 Difference]: Finished difference. Result has 336 places, 460 transitions, 6639 flow [2024-06-28 01:24:18,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6329, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6639, PETRI_PLACES=336, PETRI_TRANSITIONS=460} [2024-06-28 01:24:18,938 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 294 predicate places. [2024-06-28 01:24:18,938 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 460 transitions, 6639 flow [2024-06-28 01:24:18,939 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) [2024-06-28 01:24:18,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:18,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:18,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:24:18,939 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:18,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1382630382, now seen corresponding path program 4 times [2024-06-28 01:24:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:18,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721591296] [2024-06-28 01:24:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:18,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:19,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:19,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721591296] [2024-06-28 01:24:19,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721591296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:19,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:19,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:19,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870200928] [2024-06-28 01:24:19,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:19,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:19,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:19,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:19,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:19,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:19,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 460 transitions, 6639 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) [2024-06-28 01:24:19,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:19,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:19,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:21,079 INFO L124 PetriNetUnfolderBase]: 2398/4580 cut-off events. [2024-06-28 01:24:21,080 INFO L125 PetriNetUnfolderBase]: For 156698/156827 co-relation queries the response was YES. [2024-06-28 01:24:21,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32806 conditions, 4580 events. 2398/4580 cut-off events. For 156698/156827 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 33601 event pairs, 437 based on Foata normal form. 53/4600 useless extension candidates. Maximal degree in co-relation 32651. Up to 3172 conditions per place. [2024-06-28 01:24:21,135 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 367 selfloop transitions, 133 changer transitions 0/509 dead transitions. [2024-06-28 01:24:21,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 509 transitions, 8126 flow [2024-06-28 01:24:21,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 01:24:21,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2024-06-28 01:24:21,138 INFO L175 Difference]: Start difference. First operand has 336 places, 460 transitions, 6639 flow. Second operand 11 states and 206 transitions. [2024-06-28 01:24:21,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 509 transitions, 8126 flow [2024-06-28 01:24:21,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 509 transitions, 7834 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:21,609 INFO L231 Difference]: Finished difference. Result has 339 places, 469 transitions, 6789 flow [2024-06-28 01:24:21,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6347, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6789, PETRI_PLACES=339, PETRI_TRANSITIONS=469} [2024-06-28 01:24:21,610 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 297 predicate places. [2024-06-28 01:24:21,610 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 469 transitions, 6789 flow [2024-06-28 01:24:21,610 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) [2024-06-28 01:24:21,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:21,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:21,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:24:21,611 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:21,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:21,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1383575014, now seen corresponding path program 8 times [2024-06-28 01:24:21,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:21,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926021997] [2024-06-28 01:24:21,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:21,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:22,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:22,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926021997] [2024-06-28 01:24:22,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926021997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:22,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:22,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:22,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431865152] [2024-06-28 01:24:22,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:22,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:22,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:22,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:22,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:22,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:22,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 469 transitions, 6789 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) [2024-06-28 01:24:22,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:22,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:22,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:24,081 INFO L124 PetriNetUnfolderBase]: 2412/4641 cut-off events. [2024-06-28 01:24:24,082 INFO L125 PetriNetUnfolderBase]: For 164241/164364 co-relation queries the response was YES. [2024-06-28 01:24:24,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33735 conditions, 4641 events. 2412/4641 cut-off events. For 164241/164364 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 34413 event pairs, 478 based on Foata normal form. 55/4658 useless extension candidates. Maximal degree in co-relation 33578. Up to 3284 conditions per place. [2024-06-28 01:24:24,141 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 379 selfloop transitions, 122 changer transitions 0/510 dead transitions. [2024-06-28 01:24:24,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 510 transitions, 8109 flow [2024-06-28 01:24:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:24:24,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-28 01:24:24,143 INFO L175 Difference]: Start difference. First operand has 339 places, 469 transitions, 6789 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:24:24,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 510 transitions, 8109 flow [2024-06-28 01:24:24,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 510 transitions, 7909 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:24,727 INFO L231 Difference]: Finished difference. Result has 343 places, 471 transitions, 6949 flow [2024-06-28 01:24:24,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6589, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6949, PETRI_PLACES=343, PETRI_TRANSITIONS=471} [2024-06-28 01:24:24,728 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 301 predicate places. [2024-06-28 01:24:24,728 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 471 transitions, 6949 flow [2024-06-28 01:24:24,728 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) [2024-06-28 01:24:24,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:24,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:24,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:24:24,728 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:24,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:24,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1383582702, now seen corresponding path program 5 times [2024-06-28 01:24:24,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:24,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615524893] [2024-06-28 01:24:24,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:24,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:25,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:25,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615524893] [2024-06-28 01:24:25,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615524893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:25,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:25,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:25,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533659059] [2024-06-28 01:24:25,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:25,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:25,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:25,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:25,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:25,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:25,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 471 transitions, 6949 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) [2024-06-28 01:24:25,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:25,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:25,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:26,726 INFO L124 PetriNetUnfolderBase]: 2457/4701 cut-off events. [2024-06-28 01:24:26,726 INFO L125 PetriNetUnfolderBase]: For 180786/180913 co-relation queries the response was YES. [2024-06-28 01:24:26,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35099 conditions, 4701 events. 2457/4701 cut-off events. For 180786/180913 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 34715 event pairs, 443 based on Foata normal form. 54/4722 useless extension candidates. Maximal degree in co-relation 34940. Up to 3144 conditions per place. [2024-06-28 01:24:26,786 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 375 selfloop transitions, 136 changer transitions 0/520 dead transitions. [2024-06-28 01:24:26,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 520 transitions, 8738 flow [2024-06-28 01:24:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-28 01:24:26,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023923444976076 [2024-06-28 01:24:26,787 INFO L175 Difference]: Start difference. First operand has 343 places, 471 transitions, 6949 flow. Second operand 11 states and 210 transitions. [2024-06-28 01:24:26,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 520 transitions, 8738 flow [2024-06-28 01:24:27,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 520 transitions, 8360 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:27,385 INFO L231 Difference]: Finished difference. Result has 346 places, 479 transitions, 7171 flow [2024-06-28 01:24:27,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6579, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7171, PETRI_PLACES=346, PETRI_TRANSITIONS=479} [2024-06-28 01:24:27,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 304 predicate places. [2024-06-28 01:24:27,386 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 479 transitions, 7171 flow [2024-06-28 01:24:27,386 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) [2024-06-28 01:24:27,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:27,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:27,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:24:27,386 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:27,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:27,386 INFO L85 PathProgramCache]: Analyzing trace with hash 7660680, now seen corresponding path program 9 times [2024-06-28 01:24:27,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:27,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745770396] [2024-06-28 01:24:27,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:27,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:28,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:28,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745770396] [2024-06-28 01:24:28,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745770396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:28,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:28,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:28,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358865704] [2024-06-28 01:24:28,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:28,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:28,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:28,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:28,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:28,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:28,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 479 transitions, 7171 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) [2024-06-28 01:24:28,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:28,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:28,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:29,871 INFO L124 PetriNetUnfolderBase]: 2485/4682 cut-off events. [2024-06-28 01:24:29,871 INFO L125 PetriNetUnfolderBase]: For 183392/183529 co-relation queries the response was YES. [2024-06-28 01:24:29,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35569 conditions, 4682 events. 2485/4682 cut-off events. For 183392/183529 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 34129 event pairs, 547 based on Foata normal form. 49/4680 useless extension candidates. Maximal degree in co-relation 35408. Up to 3678 conditions per place. [2024-06-28 01:24:29,937 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 423 selfloop transitions, 89 changer transitions 0/521 dead transitions. [2024-06-28 01:24:29,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 521 transitions, 8547 flow [2024-06-28 01:24:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 01:24:29,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-06-28 01:24:29,939 INFO L175 Difference]: Start difference. First operand has 346 places, 479 transitions, 7171 flow. Second operand 11 states and 201 transitions. [2024-06-28 01:24:29,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 521 transitions, 8547 flow [2024-06-28 01:24:30,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 521 transitions, 8349 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-06-28 01:24:30,654 INFO L231 Difference]: Finished difference. Result has 352 places, 485 transitions, 7340 flow [2024-06-28 01:24:30,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7003, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7340, PETRI_PLACES=352, PETRI_TRANSITIONS=485} [2024-06-28 01:24:30,655 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-28 01:24:30,655 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 485 transitions, 7340 flow [2024-06-28 01:24:30,655 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) [2024-06-28 01:24:30,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:30,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:30,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:24:30,656 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:30,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:30,656 INFO L85 PathProgramCache]: Analyzing trace with hash -837310524, now seen corresponding path program 6 times [2024-06-28 01:24:30,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:30,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594013070] [2024-06-28 01:24:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:30,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:31,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:31,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594013070] [2024-06-28 01:24:31,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594013070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:31,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:31,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:31,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965412424] [2024-06-28 01:24:31,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:31,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:31,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:31,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:31,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:31,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 485 transitions, 7340 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) [2024-06-28 01:24:31,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:31,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:31,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:32,689 INFO L124 PetriNetUnfolderBase]: 2535/4781 cut-off events. [2024-06-28 01:24:32,689 INFO L125 PetriNetUnfolderBase]: For 187764/187883 co-relation queries the response was YES. [2024-06-28 01:24:32,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35885 conditions, 4781 events. 2535/4781 cut-off events. For 187764/187883 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 35022 event pairs, 546 based on Foata normal form. 38/4768 useless extension candidates. Maximal degree in co-relation 35722. Up to 3731 conditions per place. [2024-06-28 01:24:32,757 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 429 selfloop transitions, 92 changer transitions 0/530 dead transitions. [2024-06-28 01:24:32,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 530 transitions, 8748 flow [2024-06-28 01:24:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-28 01:24:32,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-06-28 01:24:32,758 INFO L175 Difference]: Start difference. First operand has 352 places, 485 transitions, 7340 flow. Second operand 11 states and 202 transitions. [2024-06-28 01:24:32,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 530 transitions, 8748 flow [2024-06-28 01:24:33,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 530 transitions, 8479 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:33,512 INFO L231 Difference]: Finished difference. Result has 354 places, 494 transitions, 7467 flow [2024-06-28 01:24:33,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7071, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7467, PETRI_PLACES=354, PETRI_TRANSITIONS=494} [2024-06-28 01:24:33,512 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 312 predicate places. [2024-06-28 01:24:33,512 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 494 transitions, 7467 flow [2024-06-28 01:24:33,513 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) [2024-06-28 01:24:33,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:33,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:33,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:24:33,513 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:33,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:33,514 INFO L85 PathProgramCache]: Analyzing trace with hash -692295872, now seen corresponding path program 10 times [2024-06-28 01:24:33,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:33,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215133629] [2024-06-28 01:24:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:33,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:34,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:34,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215133629] [2024-06-28 01:24:34,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215133629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:34,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:34,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:34,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968489949] [2024-06-28 01:24:34,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:34,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:34,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:34,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:34,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:34,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 494 transitions, 7467 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) [2024-06-28 01:24:34,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:34,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:34,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:35,895 INFO L124 PetriNetUnfolderBase]: 2573/4899 cut-off events. [2024-06-28 01:24:35,895 INFO L125 PetriNetUnfolderBase]: For 199107/199228 co-relation queries the response was YES. [2024-06-28 01:24:35,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37036 conditions, 4899 events. 2573/4899 cut-off events. For 199107/199228 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 36366 event pairs, 518 based on Foata normal form. 49/4902 useless extension candidates. Maximal degree in co-relation 36872. Up to 3627 conditions per place. [2024-06-28 01:24:35,964 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 418 selfloop transitions, 114 changer transitions 0/541 dead transitions. [2024-06-28 01:24:35,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 541 transitions, 9153 flow [2024-06-28 01:24:35,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:35,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:24:35,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-28 01:24:35,966 INFO L175 Difference]: Start difference. First operand has 354 places, 494 transitions, 7467 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:24:35,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 541 transitions, 9153 flow [2024-06-28 01:24:36,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 541 transitions, 8899 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:36,656 INFO L231 Difference]: Finished difference. Result has 358 places, 502 transitions, 7749 flow [2024-06-28 01:24:36,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7213, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7749, PETRI_PLACES=358, PETRI_TRANSITIONS=502} [2024-06-28 01:24:36,657 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-06-28 01:24:36,657 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 502 transitions, 7749 flow [2024-06-28 01:24:36,657 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) [2024-06-28 01:24:36,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:36,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:36,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:24:36,657 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:36,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:36,658 INFO L85 PathProgramCache]: Analyzing trace with hash 165984260, now seen corresponding path program 7 times [2024-06-28 01:24:36,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:36,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000793548] [2024-06-28 01:24:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:36,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:37,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:37,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000793548] [2024-06-28 01:24:37,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000793548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:37,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:37,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:37,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591936034] [2024-06-28 01:24:37,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:37,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:37,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:37,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:37,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:37,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:37,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 502 transitions, 7749 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) [2024-06-28 01:24:37,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:37,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:37,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:38,801 INFO L124 PetriNetUnfolderBase]: 2651/4959 cut-off events. [2024-06-28 01:24:38,802 INFO L125 PetriNetUnfolderBase]: For 217806/217971 co-relation queries the response was YES. [2024-06-28 01:24:38,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38611 conditions, 4959 events. 2651/4959 cut-off events. For 217806/217971 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 36415 event pairs, 510 based on Foata normal form. 69/4981 useless extension candidates. Maximal degree in co-relation 38445. Up to 3663 conditions per place. [2024-06-28 01:24:38,879 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 423 selfloop transitions, 124 changer transitions 0/556 dead transitions. [2024-06-28 01:24:38,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 556 transitions, 9691 flow [2024-06-28 01:24:38,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:38,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-28 01:24:38,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49760765550239233 [2024-06-28 01:24:38,880 INFO L175 Difference]: Start difference. First operand has 358 places, 502 transitions, 7749 flow. Second operand 11 states and 208 transitions. [2024-06-28 01:24:38,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 556 transitions, 9691 flow [2024-06-28 01:24:39,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 556 transitions, 9472 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:39,747 INFO L231 Difference]: Finished difference. Result has 364 places, 517 transitions, 8209 flow [2024-06-28 01:24:39,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7530, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8209, PETRI_PLACES=364, PETRI_TRANSITIONS=517} [2024-06-28 01:24:39,747 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 322 predicate places. [2024-06-28 01:24:39,747 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 517 transitions, 8209 flow [2024-06-28 01:24:39,747 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) [2024-06-28 01:24:39,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:39,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:39,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:24:39,748 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:39,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:39,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1747567756, now seen corresponding path program 8 times [2024-06-28 01:24:39,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:39,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437293961] [2024-06-28 01:24:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:39,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:40,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:40,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437293961] [2024-06-28 01:24:40,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437293961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:40,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:40,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:40,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196601000] [2024-06-28 01:24:40,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:40,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:40,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:40,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:40,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:40,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:40,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 517 transitions, 8209 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) [2024-06-28 01:24:40,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:40,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:40,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:41,885 INFO L124 PetriNetUnfolderBase]: 2649/4986 cut-off events. [2024-06-28 01:24:41,886 INFO L125 PetriNetUnfolderBase]: For 216161/216300 co-relation queries the response was YES. [2024-06-28 01:24:41,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39152 conditions, 4986 events. 2649/4986 cut-off events. For 216161/216300 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 36810 event pairs, 510 based on Foata normal form. 49/4988 useless extension candidates. Maximal degree in co-relation 38982. Up to 3661 conditions per place. [2024-06-28 01:24:41,956 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 417 selfloop transitions, 129 changer transitions 0/555 dead transitions. [2024-06-28 01:24:41,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 555 transitions, 9639 flow [2024-06-28 01:24:41,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 01:24:41,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49521531100478466 [2024-06-28 01:24:41,958 INFO L175 Difference]: Start difference. First operand has 364 places, 517 transitions, 8209 flow. Second operand 11 states and 207 transitions. [2024-06-28 01:24:41,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 555 transitions, 9639 flow [2024-06-28 01:24:42,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 555 transitions, 9427 flow, removed 69 selfloop flow, removed 5 redundant places. [2024-06-28 01:24:42,812 INFO L231 Difference]: Finished difference. Result has 370 places, 517 transitions, 8263 flow [2024-06-28 01:24:42,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7997, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8263, PETRI_PLACES=370, PETRI_TRANSITIONS=517} [2024-06-28 01:24:42,812 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 328 predicate places. [2024-06-28 01:24:42,812 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 517 transitions, 8263 flow [2024-06-28 01:24:42,812 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) [2024-06-28 01:24:42,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:42,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:42,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:24:42,813 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:42,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:42,813 INFO L85 PathProgramCache]: Analyzing trace with hash -692526264, now seen corresponding path program 9 times [2024-06-28 01:24:42,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:42,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840716184] [2024-06-28 01:24:42,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:42,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:43,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:43,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840716184] [2024-06-28 01:24:43,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840716184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:43,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:43,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:43,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560446351] [2024-06-28 01:24:43,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:43,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:43,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:43,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:43,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:43,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:43,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 517 transitions, 8263 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) [2024-06-28 01:24:43,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:43,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:43,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:45,020 INFO L124 PetriNetUnfolderBase]: 2645/4979 cut-off events. [2024-06-28 01:24:45,020 INFO L125 PetriNetUnfolderBase]: For 212910/213023 co-relation queries the response was YES. [2024-06-28 01:24:45,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38819 conditions, 4979 events. 2645/4979 cut-off events. For 212910/213023 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 36820 event pairs, 565 based on Foata normal form. 30/4952 useless extension candidates. Maximal degree in co-relation 38647. Up to 3867 conditions per place. [2024-06-28 01:24:45,095 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 452 selfloop transitions, 95 changer transitions 0/556 dead transitions. [2024-06-28 01:24:45,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 556 transitions, 9539 flow [2024-06-28 01:24:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:24:45,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-28 01:24:45,097 INFO L175 Difference]: Start difference. First operand has 370 places, 517 transitions, 8263 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:24:45,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 556 transitions, 9539 flow [2024-06-28 01:24:46,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 556 transitions, 9225 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:46,051 INFO L231 Difference]: Finished difference. Result has 372 places, 517 transitions, 8149 flow [2024-06-28 01:24:46,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7949, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8149, PETRI_PLACES=372, PETRI_TRANSITIONS=517} [2024-06-28 01:24:46,052 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 330 predicate places. [2024-06-28 01:24:46,052 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 517 transitions, 8149 flow [2024-06-28 01:24:46,052 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) [2024-06-28 01:24:46,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:46,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:46,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:24:46,053 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:46,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:46,053 INFO L85 PathProgramCache]: Analyzing trace with hash -692526512, now seen corresponding path program 11 times [2024-06-28 01:24:46,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:46,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095443700] [2024-06-28 01:24:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:46,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:46,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:46,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095443700] [2024-06-28 01:24:46,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095443700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:46,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:46,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:46,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821784841] [2024-06-28 01:24:46,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:46,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:46,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:46,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:46,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:47,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:47,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 517 transitions, 8149 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) [2024-06-28 01:24:47,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:47,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:47,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:48,493 INFO L124 PetriNetUnfolderBase]: 2643/4990 cut-off events. [2024-06-28 01:24:48,493 INFO L125 PetriNetUnfolderBase]: For 205101/205214 co-relation queries the response was YES. [2024-06-28 01:24:48,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38355 conditions, 4990 events. 2643/4990 cut-off events. For 205101/205214 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 36967 event pairs, 565 based on Foata normal form. 29/4962 useless extension candidates. Maximal degree in co-relation 38182. Up to 3882 conditions per place. [2024-06-28 01:24:48,566 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 454 selfloop transitions, 93 changer transitions 0/556 dead transitions. [2024-06-28 01:24:48,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 556 transitions, 9425 flow [2024-06-28 01:24:48,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:48,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 01:24:48,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2024-06-28 01:24:48,568 INFO L175 Difference]: Start difference. First operand has 372 places, 517 transitions, 8149 flow. Second operand 11 states and 204 transitions. [2024-06-28 01:24:48,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 556 transitions, 9425 flow [2024-06-28 01:24:49,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 556 transitions, 9067 flow, removed 55 selfloop flow, removed 10 redundant places. [2024-06-28 01:24:49,448 INFO L231 Difference]: Finished difference. Result has 373 places, 517 transitions, 7985 flow [2024-06-28 01:24:49,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7791, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7985, PETRI_PLACES=373, PETRI_TRANSITIONS=517} [2024-06-28 01:24:49,449 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 331 predicate places. [2024-06-28 01:24:49,449 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 517 transitions, 7985 flow [2024-06-28 01:24:49,449 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) [2024-06-28 01:24:49,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:49,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:49,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:24:49,449 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:49,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:49,450 INFO L85 PathProgramCache]: Analyzing trace with hash 395969540, now seen corresponding path program 10 times [2024-06-28 01:24:49,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:49,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591305144] [2024-06-28 01:24:49,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:49,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:50,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:50,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591305144] [2024-06-28 01:24:50,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591305144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:50,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:50,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:50,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474343526] [2024-06-28 01:24:50,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:50,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:50,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:50,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:50,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:50,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:50,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 517 transitions, 7985 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) [2024-06-28 01:24:50,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:50,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:50,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:51,708 INFO L124 PetriNetUnfolderBase]: 2680/5048 cut-off events. [2024-06-28 01:24:51,708 INFO L125 PetriNetUnfolderBase]: For 214970/215155 co-relation queries the response was YES. [2024-06-28 01:24:51,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38919 conditions, 5048 events. 2680/5048 cut-off events. For 214970/215155 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 37268 event pairs, 357 based on Foata normal form. 71/5088 useless extension candidates. Maximal degree in co-relation 38745. Up to 3074 conditions per place. [2024-06-28 01:24:51,779 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 352 selfloop transitions, 201 changer transitions 0/562 dead transitions. [2024-06-28 01:24:51,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 562 transitions, 9677 flow [2024-06-28 01:24:51,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-28 01:24:51,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:24:51,808 INFO L175 Difference]: Start difference. First operand has 373 places, 517 transitions, 7985 flow. Second operand 11 states and 209 transitions. [2024-06-28 01:24:51,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 562 transitions, 9677 flow [2024-06-28 01:24:52,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 562 transitions, 9429 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 01:24:52,987 INFO L231 Difference]: Finished difference. Result has 375 places, 522 transitions, 8410 flow [2024-06-28 01:24:52,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7737, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8410, PETRI_PLACES=375, PETRI_TRANSITIONS=522} [2024-06-28 01:24:52,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 333 predicate places. [2024-06-28 01:24:52,988 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 522 transitions, 8410 flow [2024-06-28 01:24:52,988 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) [2024-06-28 01:24:52,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:52,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:52,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:24:52,989 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:52,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:52,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1472440266, now seen corresponding path program 1 times [2024-06-28 01:24:52,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:52,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202340141] [2024-06-28 01:24:52,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:52,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:54,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:54,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202340141] [2024-06-28 01:24:54,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202340141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:54,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:54,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:54,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213966904] [2024-06-28 01:24:54,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:54,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:54,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:54,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:54,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:24:54,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 522 transitions, 8410 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:54,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:54,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:24:54,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:55,618 INFO L124 PetriNetUnfolderBase]: 2567/4830 cut-off events. [2024-06-28 01:24:55,618 INFO L125 PetriNetUnfolderBase]: For 233333/233628 co-relation queries the response was YES. [2024-06-28 01:24:55,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38780 conditions, 4830 events. 2567/4830 cut-off events. For 233333/233628 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 35859 event pairs, 709 based on Foata normal form. 172/4926 useless extension candidates. Maximal degree in co-relation 38604. Up to 3763 conditions per place. [2024-06-28 01:24:55,696 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 468 selfloop transitions, 29 changer transitions 0/563 dead transitions. [2024-06-28 01:24:55,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 563 transitions, 9639 flow [2024-06-28 01:24:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:55,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:55,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 01:24:55,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2024-06-28 01:24:55,698 INFO L175 Difference]: Start difference. First operand has 375 places, 522 transitions, 8410 flow. Second operand 11 states and 204 transitions. [2024-06-28 01:24:55,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 563 transitions, 9639 flow [2024-06-28 01:24:56,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 563 transitions, 9367 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:56,522 INFO L231 Difference]: Finished difference. Result has 380 places, 525 transitions, 8258 flow [2024-06-28 01:24:56,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8138, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8258, PETRI_PLACES=380, PETRI_TRANSITIONS=525} [2024-06-28 01:24:56,523 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 338 predicate places. [2024-06-28 01:24:56,523 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 525 transitions, 8258 flow [2024-06-28 01:24:56,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:56,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:56,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:56,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 01:24:56,523 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:56,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:56,524 INFO L85 PathProgramCache]: Analyzing trace with hash 395681240, now seen corresponding path program 11 times [2024-06-28 01:24:56,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:56,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245514367] [2024-06-28 01:24:56,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:56,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:57,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:57,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245514367] [2024-06-28 01:24:57,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245514367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:57,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:57,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:24:57,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046418913] [2024-06-28 01:24:57,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:57,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:24:57,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:57,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:24:57,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:24:57,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:24:57,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 525 transitions, 8258 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) [2024-06-28 01:24:57,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:57,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:24:57,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:58,843 INFO L124 PetriNetUnfolderBase]: 2731/5199 cut-off events. [2024-06-28 01:24:58,844 INFO L125 PetriNetUnfolderBase]: For 229388/229579 co-relation queries the response was YES. [2024-06-28 01:24:58,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40804 conditions, 5199 events. 2731/5199 cut-off events. For 229388/229579 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 38978 event pairs, 395 based on Foata normal form. 65/5228 useless extension candidates. Maximal degree in co-relation 40625. Up to 3145 conditions per place. [2024-06-28 01:24:58,915 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 377 selfloop transitions, 184 changer transitions 0/570 dead transitions. [2024-06-28 01:24:58,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 570 transitions, 10090 flow [2024-06-28 01:24:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:58,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-28 01:24:58,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047846889952153 [2024-06-28 01:24:58,916 INFO L175 Difference]: Start difference. First operand has 380 places, 525 transitions, 8258 flow. Second operand 11 states and 211 transitions. [2024-06-28 01:24:58,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 570 transitions, 10090 flow [2024-06-28 01:24:59,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 570 transitions, 10005 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:59,821 INFO L231 Difference]: Finished difference. Result has 383 places, 529 transitions, 8674 flow [2024-06-28 01:24:59,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8173, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8674, PETRI_PLACES=383, PETRI_TRANSITIONS=529} [2024-06-28 01:24:59,821 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 341 predicate places. [2024-06-28 01:24:59,822 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 529 transitions, 8674 flow [2024-06-28 01:24:59,822 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) [2024-06-28 01:24:59,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:59,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:24:59,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 01:24:59,822 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:59,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash 387629300, now seen corresponding path program 12 times [2024-06-28 01:24:59,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:59,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387883327] [2024-06-28 01:24:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:59,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:00,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:00,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387883327] [2024-06-28 01:25:00,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387883327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:00,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:00,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:00,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281939959] [2024-06-28 01:25:00,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:00,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:00,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:00,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:00,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:00,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:00,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 529 transitions, 8674 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) [2024-06-28 01:25:00,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:00,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:00,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:02,133 INFO L124 PetriNetUnfolderBase]: 2755/5171 cut-off events. [2024-06-28 01:25:02,133 INFO L125 PetriNetUnfolderBase]: For 241491/241629 co-relation queries the response was YES. [2024-06-28 01:25:02,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41954 conditions, 5171 events. 2755/5171 cut-off events. For 241491/241629 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 38407 event pairs, 540 based on Foata normal form. 34/5146 useless extension candidates. Maximal degree in co-relation 41774. Up to 3815 conditions per place. [2024-06-28 01:25:02,212 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 446 selfloop transitions, 119 changer transitions 0/574 dead transitions. [2024-06-28 01:25:02,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 574 transitions, 10526 flow [2024-06-28 01:25:02,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:02,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:02,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-28 01:25:02,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023923444976076 [2024-06-28 01:25:02,214 INFO L175 Difference]: Start difference. First operand has 383 places, 529 transitions, 8674 flow. Second operand 11 states and 210 transitions. [2024-06-28 01:25:02,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 574 transitions, 10526 flow [2024-06-28 01:25:03,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 574 transitions, 10194 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:03,285 INFO L231 Difference]: Finished difference. Result has 387 places, 533 transitions, 8721 flow [2024-06-28 01:25:03,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8346, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8721, PETRI_PLACES=387, PETRI_TRANSITIONS=533} [2024-06-28 01:25:03,285 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 345 predicate places. [2024-06-28 01:25:03,285 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 533 transitions, 8721 flow [2024-06-28 01:25:03,285 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) [2024-06-28 01:25:03,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:03,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:03,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 01:25:03,286 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:03,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:03,286 INFO L85 PathProgramCache]: Analyzing trace with hash 395672870, now seen corresponding path program 13 times [2024-06-28 01:25:03,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:03,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100410338] [2024-06-28 01:25:03,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:03,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:04,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:04,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100410338] [2024-06-28 01:25:04,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100410338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:04,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:04,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:04,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71219566] [2024-06-28 01:25:04,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:04,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:04,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:04,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:04,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:04,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:04,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 533 transitions, 8721 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) [2024-06-28 01:25:04,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:04,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:04,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:05,568 INFO L124 PetriNetUnfolderBase]: 2833/5334 cut-off events. [2024-06-28 01:25:05,569 INFO L125 PetriNetUnfolderBase]: For 260888/261059 co-relation queries the response was YES. [2024-06-28 01:25:05,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43174 conditions, 5334 events. 2833/5334 cut-off events. For 260888/261059 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 39856 event pairs, 395 based on Foata normal form. 64/5360 useless extension candidates. Maximal degree in co-relation 42993. Up to 2951 conditions per place. [2024-06-28 01:25:05,653 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 385 selfloop transitions, 193 changer transitions 0/587 dead transitions. [2024-06-28 01:25:05,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 587 transitions, 10795 flow [2024-06-28 01:25:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 01:25:05,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119617224880383 [2024-06-28 01:25:05,654 INFO L175 Difference]: Start difference. First operand has 387 places, 533 transitions, 8721 flow. Second operand 11 states and 214 transitions. [2024-06-28 01:25:05,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 587 transitions, 10795 flow [2024-06-28 01:25:06,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 587 transitions, 10359 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:06,876 INFO L231 Difference]: Finished difference. Result has 392 places, 546 transitions, 9160 flow [2024-06-28 01:25:06,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8285, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9160, PETRI_PLACES=392, PETRI_TRANSITIONS=546} [2024-06-28 01:25:06,876 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 350 predicate places. [2024-06-28 01:25:06,876 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 546 transitions, 9160 flow [2024-06-28 01:25:06,876 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) [2024-06-28 01:25:06,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:06,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:06,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 01:25:06,877 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:06,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash 387637670, now seen corresponding path program 14 times [2024-06-28 01:25:06,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:06,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729074675] [2024-06-28 01:25:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:06,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:07,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:07,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729074675] [2024-06-28 01:25:07,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729074675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:07,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:07,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:07,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611109297] [2024-06-28 01:25:07,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:07,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:07,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:07,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:07,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:07,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:07,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 546 transitions, 9160 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) [2024-06-28 01:25:07,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:07,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:07,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:09,484 INFO L124 PetriNetUnfolderBase]: 2871/5340 cut-off events. [2024-06-28 01:25:09,484 INFO L125 PetriNetUnfolderBase]: For 277417/277555 co-relation queries the response was YES. [2024-06-28 01:25:09,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44762 conditions, 5340 events. 2871/5340 cut-off events. For 277417/277555 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 39590 event pairs, 557 based on Foata normal form. 35/5313 useless extension candidates. Maximal degree in co-relation 44578. Up to 3935 conditions per place. [2024-06-28 01:25:09,576 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 458 selfloop transitions, 123 changer transitions 0/590 dead transitions. [2024-06-28 01:25:09,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 590 transitions, 10909 flow [2024-06-28 01:25:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-28 01:25:09,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047846889952153 [2024-06-28 01:25:09,578 INFO L175 Difference]: Start difference. First operand has 392 places, 546 transitions, 9160 flow. Second operand 11 states and 211 transitions. [2024-06-28 01:25:09,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 590 transitions, 10909 flow [2024-06-28 01:25:10,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 590 transitions, 10667 flow, removed 86 selfloop flow, removed 4 redundant places. [2024-06-28 01:25:10,799 INFO L231 Difference]: Finished difference. Result has 400 places, 551 transitions, 9407 flow [2024-06-28 01:25:10,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8922, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9407, PETRI_PLACES=400, PETRI_TRANSITIONS=551} [2024-06-28 01:25:10,799 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 358 predicate places. [2024-06-28 01:25:10,800 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 551 transitions, 9407 flow [2024-06-28 01:25:10,800 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) [2024-06-28 01:25:10,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:10,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:10,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 01:25:10,800 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:10,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash 395672622, now seen corresponding path program 12 times [2024-06-28 01:25:10,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:10,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562539586] [2024-06-28 01:25:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:10,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:11,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:11,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562539586] [2024-06-28 01:25:11,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562539586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:11,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:11,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:11,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764837253] [2024-06-28 01:25:11,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:11,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:11,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:11,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:12,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:12,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 551 transitions, 9407 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) [2024-06-28 01:25:12,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:12,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:12,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:13,603 INFO L124 PetriNetUnfolderBase]: 2895/5486 cut-off events. [2024-06-28 01:25:13,604 INFO L125 PetriNetUnfolderBase]: For 287632/287835 co-relation queries the response was YES. [2024-06-28 01:25:13,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45752 conditions, 5486 events. 2895/5486 cut-off events. For 287632/287835 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 41533 event pairs, 461 based on Foata normal form. 78/5509 useless extension candidates. Maximal degree in co-relation 45565. Up to 3636 conditions per place. [2024-06-28 01:25:13,698 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 418 selfloop transitions, 167 changer transitions 0/594 dead transitions. [2024-06-28 01:25:13,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 594 transitions, 11197 flow [2024-06-28 01:25:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 01:25:13,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2024-06-28 01:25:13,699 INFO L175 Difference]: Start difference. First operand has 400 places, 551 transitions, 9407 flow. Second operand 11 states and 206 transitions. [2024-06-28 01:25:13,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 594 transitions, 11197 flow [2024-06-28 01:25:14,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 594 transitions, 10977 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:14,893 INFO L231 Difference]: Finished difference. Result has 404 places, 555 transitions, 9778 flow [2024-06-28 01:25:14,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9187, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9778, PETRI_PLACES=404, PETRI_TRANSITIONS=555} [2024-06-28 01:25:14,894 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 362 predicate places. [2024-06-28 01:25:14,894 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 555 transitions, 9778 flow [2024-06-28 01:25:14,894 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) [2024-06-28 01:25:14,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:14,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:14,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 01:25:14,894 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:14,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:14,895 INFO L85 PathProgramCache]: Analyzing trace with hash 387629052, now seen corresponding path program 13 times [2024-06-28 01:25:14,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:14,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788327178] [2024-06-28 01:25:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:14,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:16,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:16,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788327178] [2024-06-28 01:25:16,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788327178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:16,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:16,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:16,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725754518] [2024-06-28 01:25:16,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:16,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:16,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:16,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:16,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:16,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:16,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 555 transitions, 9778 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) [2024-06-28 01:25:16,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:16,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:16,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:17,717 INFO L124 PetriNetUnfolderBase]: 2906/5429 cut-off events. [2024-06-28 01:25:17,717 INFO L125 PetriNetUnfolderBase]: For 296043/296186 co-relation queries the response was YES. [2024-06-28 01:25:17,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46601 conditions, 5429 events. 2906/5429 cut-off events. For 296043/296186 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 40489 event pairs, 574 based on Foata normal form. 34/5397 useless extension candidates. Maximal degree in co-relation 46412. Up to 4087 conditions per place. [2024-06-28 01:25:17,806 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 471 selfloop transitions, 116 changer transitions 0/596 dead transitions. [2024-06-28 01:25:17,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 596 transitions, 11454 flow [2024-06-28 01:25:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:17,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 01:25:17,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49521531100478466 [2024-06-28 01:25:17,807 INFO L175 Difference]: Start difference. First operand has 404 places, 555 transitions, 9778 flow. Second operand 11 states and 207 transitions. [2024-06-28 01:25:17,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 596 transitions, 11454 flow [2024-06-28 01:25:19,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 596 transitions, 11193 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:19,206 INFO L231 Difference]: Finished difference. Result has 408 places, 557 transitions, 9882 flow [2024-06-28 01:25:19,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9521, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9882, PETRI_PLACES=408, PETRI_TRANSITIONS=557} [2024-06-28 01:25:19,207 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 366 predicate places. [2024-06-28 01:25:19,207 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 557 transitions, 9882 flow [2024-06-28 01:25:19,207 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) [2024-06-28 01:25:19,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:19,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:19,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 01:25:19,207 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:19,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash 387398660, now seen corresponding path program 15 times [2024-06-28 01:25:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:19,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193482566] [2024-06-28 01:25:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:19,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:19,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:19,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:19,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193482566] [2024-06-28 01:25:19,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193482566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:19,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:19,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:19,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128899010] [2024-06-28 01:25:19,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:19,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:19,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:20,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:20,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 557 transitions, 9882 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) [2024-06-28 01:25:20,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:20,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:20,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:21,567 INFO L124 PetriNetUnfolderBase]: 2902/5409 cut-off events. [2024-06-28 01:25:21,567 INFO L125 PetriNetUnfolderBase]: For 289488/289634 co-relation queries the response was YES. [2024-06-28 01:25:21,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46378 conditions, 5409 events. 2902/5409 cut-off events. For 289488/289634 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 40311 event pairs, 581 based on Foata normal form. 35/5378 useless extension candidates. Maximal degree in co-relation 46187. Up to 4113 conditions per place. [2024-06-28 01:25:21,656 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 473 selfloop transitions, 112 changer transitions 0/594 dead transitions. [2024-06-28 01:25:21,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 594 transitions, 11236 flow [2024-06-28 01:25:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:21,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:21,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 01:25:21,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2024-06-28 01:25:21,658 INFO L175 Difference]: Start difference. First operand has 408 places, 557 transitions, 9882 flow. Second operand 11 states and 204 transitions. [2024-06-28 01:25:21,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 594 transitions, 11236 flow [2024-06-28 01:25:23,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 594 transitions, 10719 flow, removed 107 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:23,041 INFO L231 Difference]: Finished difference. Result has 410 places, 557 transitions, 9595 flow [2024-06-28 01:25:23,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9365, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9595, PETRI_PLACES=410, PETRI_TRANSITIONS=557} [2024-06-28 01:25:23,041 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 368 predicate places. [2024-06-28 01:25:23,041 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 557 transitions, 9595 flow [2024-06-28 01:25:23,042 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) [2024-06-28 01:25:23,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:23,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:23,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 01:25:23,042 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:23,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:23,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1232369864, now seen corresponding path program 14 times [2024-06-28 01:25:23,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:23,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734880325] [2024-06-28 01:25:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:23,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:24,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:24,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734880325] [2024-06-28 01:25:24,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734880325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:24,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:24,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:24,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935677248] [2024-06-28 01:25:24,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:24,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:24,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:24,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:24,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:24,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:24,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 557 transitions, 9595 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) [2024-06-28 01:25:24,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:24,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:24,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:25,807 INFO L124 PetriNetUnfolderBase]: 2900/5409 cut-off events. [2024-06-28 01:25:25,807 INFO L125 PetriNetUnfolderBase]: For 273076/273222 co-relation queries the response was YES. [2024-06-28 01:25:25,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45431 conditions, 5409 events. 2900/5409 cut-off events. For 273076/273222 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 40308 event pairs, 584 based on Foata normal form. 34/5376 useless extension candidates. Maximal degree in co-relation 45239. Up to 4121 conditions per place. [2024-06-28 01:25:25,901 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 474 selfloop transitions, 111 changer transitions 0/594 dead transitions. [2024-06-28 01:25:25,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 594 transitions, 10949 flow [2024-06-28 01:25:25,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:25,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:25:25,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-28 01:25:25,902 INFO L175 Difference]: Start difference. First operand has 410 places, 557 transitions, 9595 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:25:25,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 594 transitions, 10949 flow [2024-06-28 01:25:27,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 594 transitions, 10623 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:27,316 INFO L231 Difference]: Finished difference. Result has 412 places, 557 transitions, 9496 flow [2024-06-28 01:25:27,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9269, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9496, PETRI_PLACES=412, PETRI_TRANSITIONS=557} [2024-06-28 01:25:27,316 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-06-28 01:25:27,316 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 557 transitions, 9496 flow [2024-06-28 01:25:27,316 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) [2024-06-28 01:25:27,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:27,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:27,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 01:25:27,317 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:27,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1911080060, now seen corresponding path program 15 times [2024-06-28 01:25:27,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:27,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682502692] [2024-06-28 01:25:27,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:28,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:28,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682502692] [2024-06-28 01:25:28,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682502692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:28,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:28,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:28,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584525585] [2024-06-28 01:25:28,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:28,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:28,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:28,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:28,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:28,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:28,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 557 transitions, 9496 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) [2024-06-28 01:25:28,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:28,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:28,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:29,823 INFO L124 PetriNetUnfolderBase]: 2914/5366 cut-off events. [2024-06-28 01:25:29,824 INFO L125 PetriNetUnfolderBase]: For 275148/275345 co-relation queries the response was YES. [2024-06-28 01:25:29,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45326 conditions, 5366 events. 2914/5366 cut-off events. For 275148/275345 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 39842 event pairs, 697 based on Foata normal form. 68/5354 useless extension candidates. Maximal degree in co-relation 45133. Up to 4253 conditions per place. [2024-06-28 01:25:29,909 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 445 selfloop transitions, 142 changer transitions 0/596 dead transitions. [2024-06-28 01:25:29,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 596 transitions, 10974 flow [2024-06-28 01:25:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:25:29,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-28 01:25:29,910 INFO L175 Difference]: Start difference. First operand has 412 places, 557 transitions, 9496 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:25:29,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 596 transitions, 10974 flow [2024-06-28 01:25:31,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 596 transitions, 10733 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:31,350 INFO L231 Difference]: Finished difference. Result has 412 places, 561 transitions, 9730 flow [2024-06-28 01:25:31,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9255, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9730, PETRI_PLACES=412, PETRI_TRANSITIONS=561} [2024-06-28 01:25:31,351 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-06-28 01:25:31,351 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 561 transitions, 9730 flow [2024-06-28 01:25:31,351 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) [2024-06-28 01:25:31,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:31,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:31,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 01:25:31,352 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:31,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1914834718, now seen corresponding path program 16 times [2024-06-28 01:25:31,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:31,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341577821] [2024-06-28 01:25:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:31,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:31,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341577821] [2024-06-28 01:25:31,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341577821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:31,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:31,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:31,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817288135] [2024-06-28 01:25:31,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:31,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:31,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:31,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:31,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:32,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:32,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 561 transitions, 9730 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) [2024-06-28 01:25:32,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:32,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:32,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:33,506 INFO L124 PetriNetUnfolderBase]: 2980/5452 cut-off events. [2024-06-28 01:25:33,506 INFO L125 PetriNetUnfolderBase]: For 316949/317184 co-relation queries the response was YES. [2024-06-28 01:25:33,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47006 conditions, 5452 events. 2980/5452 cut-off events. For 316949/317184 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 40273 event pairs, 603 based on Foata normal form. 98/5481 useless extension candidates. Maximal degree in co-relation 46812. Up to 4043 conditions per place. [2024-06-28 01:25:33,600 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 467 selfloop transitions, 131 changer transitions 0/607 dead transitions. [2024-06-28 01:25:33,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 607 transitions, 11465 flow [2024-06-28 01:25:33,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:33,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:25:33,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-28 01:25:33,601 INFO L175 Difference]: Start difference. First operand has 412 places, 561 transitions, 9730 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:25:33,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 607 transitions, 11465 flow [2024-06-28 01:25:35,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 607 transitions, 11038 flow, removed 88 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:35,063 INFO L231 Difference]: Finished difference. Result has 414 places, 567 transitions, 9891 flow [2024-06-28 01:25:35,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9303, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9891, PETRI_PLACES=414, PETRI_TRANSITIONS=567} [2024-06-28 01:25:35,063 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 372 predicate places. [2024-06-28 01:25:35,063 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 567 transitions, 9891 flow [2024-06-28 01:25:35,063 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) [2024-06-28 01:25:35,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:35,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:35,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 01:25:35,064 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:35,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1914834470, now seen corresponding path program 16 times [2024-06-28 01:25:35,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:35,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276450975] [2024-06-28 01:25:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:35,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:35,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:35,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276450975] [2024-06-28 01:25:35,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276450975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:35,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:35,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835002862] [2024-06-28 01:25:35,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:35,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:35,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:35,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:35,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:35,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:35,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 567 transitions, 9891 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) [2024-06-28 01:25:35,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:35,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:35,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:37,602 INFO L124 PetriNetUnfolderBase]: 2987/5552 cut-off events. [2024-06-28 01:25:37,602 INFO L125 PetriNetUnfolderBase]: For 295179/295414 co-relation queries the response was YES. [2024-06-28 01:25:37,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47628 conditions, 5552 events. 2987/5552 cut-off events. For 295179/295414 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 41544 event pairs, 637 based on Foata normal form. 91/5573 useless extension candidates. Maximal degree in co-relation 47433. Up to 4227 conditions per place. [2024-06-28 01:25:37,709 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 477 selfloop transitions, 121 changer transitions 0/607 dead transitions. [2024-06-28 01:25:37,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 607 transitions, 11437 flow [2024-06-28 01:25:37,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:37,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:25:37,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-28 01:25:37,710 INFO L175 Difference]: Start difference. First operand has 414 places, 567 transitions, 9891 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:25:37,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 607 transitions, 11437 flow [2024-06-28 01:25:39,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 607 transitions, 10980 flow, removed 113 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:39,178 INFO L231 Difference]: Finished difference. Result has 416 places, 569 transitions, 9837 flow [2024-06-28 01:25:39,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9434, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9837, PETRI_PLACES=416, PETRI_TRANSITIONS=569} [2024-06-28 01:25:39,178 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 374 predicate places. [2024-06-28 01:25:39,178 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 569 transitions, 9837 flow [2024-06-28 01:25:39,179 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) [2024-06-28 01:25:39,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:39,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:39,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 01:25:39,179 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:39,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1990910690, now seen corresponding path program 17 times [2024-06-28 01:25:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:39,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915041835] [2024-06-28 01:25:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:39,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:39,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:39,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:39,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915041835] [2024-06-28 01:25:39,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915041835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:39,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:39,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:39,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107791511] [2024-06-28 01:25:39,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:39,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:39,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:39,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:39,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:40,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:40,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 569 transitions, 9837 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) [2024-06-28 01:25:40,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:40,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:40,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:41,641 INFO L124 PetriNetUnfolderBase]: 3009/5573 cut-off events. [2024-06-28 01:25:41,641 INFO L125 PetriNetUnfolderBase]: For 295094/295263 co-relation queries the response was YES. [2024-06-28 01:25:41,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47244 conditions, 5573 events. 3009/5573 cut-off events. For 295094/295263 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 41618 event pairs, 611 based on Foata normal form. 50/5552 useless extension candidates. Maximal degree in co-relation 47048. Up to 4166 conditions per place. [2024-06-28 01:25:41,743 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 476 selfloop transitions, 127 changer transitions 0/612 dead transitions. [2024-06-28 01:25:41,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 612 transitions, 11467 flow [2024-06-28 01:25:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:41,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:25:41,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-28 01:25:41,745 INFO L175 Difference]: Start difference. First operand has 416 places, 569 transitions, 9837 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:25:41,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 612 transitions, 11467 flow [2024-06-28 01:25:43,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 612 transitions, 11136 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:43,135 INFO L231 Difference]: Finished difference. Result has 418 places, 573 transitions, 9944 flow [2024-06-28 01:25:43,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9506, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9944, PETRI_PLACES=418, PETRI_TRANSITIONS=573} [2024-06-28 01:25:43,135 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 376 predicate places. [2024-06-28 01:25:43,135 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 573 transitions, 9944 flow [2024-06-28 01:25:43,136 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) [2024-06-28 01:25:43,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:43,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:43,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 01:25:43,136 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:43,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:43,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1990910442, now seen corresponding path program 17 times [2024-06-28 01:25:43,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:43,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219766697] [2024-06-28 01:25:43,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:43,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:44,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:44,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219766697] [2024-06-28 01:25:44,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219766697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:44,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:44,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:44,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819074797] [2024-06-28 01:25:44,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:44,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:44,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:44,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:44,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:44,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:44,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 573 transitions, 9944 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) [2024-06-28 01:25:44,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:44,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:44,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:45,673 INFO L124 PetriNetUnfolderBase]: 3020/5613 cut-off events. [2024-06-28 01:25:45,673 INFO L125 PetriNetUnfolderBase]: For 298465/298634 co-relation queries the response was YES. [2024-06-28 01:25:45,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47806 conditions, 5613 events. 3020/5613 cut-off events. For 298465/298634 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 42191 event pairs, 623 based on Foata normal form. 49/5588 useless extension candidates. Maximal degree in co-relation 47609. Up to 4223 conditions per place. [2024-06-28 01:25:45,773 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 482 selfloop transitions, 123 changer transitions 0/614 dead transitions. [2024-06-28 01:25:45,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 614 transitions, 11564 flow [2024-06-28 01:25:45,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:45,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:45,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:25:45,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:25:45,774 INFO L175 Difference]: Start difference. First operand has 418 places, 573 transitions, 9944 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:25:45,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 614 transitions, 11564 flow [2024-06-28 01:25:47,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 614 transitions, 11188 flow, removed 65 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:47,192 INFO L231 Difference]: Finished difference. Result has 419 places, 575 transitions, 9972 flow [2024-06-28 01:25:47,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9568, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9972, PETRI_PLACES=419, PETRI_TRANSITIONS=575} [2024-06-28 01:25:47,192 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 377 predicate places. [2024-06-28 01:25:47,192 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 575 transitions, 9972 flow [2024-06-28 01:25:47,192 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) [2024-06-28 01:25:47,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:47,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:47,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 01:25:47,193 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:47,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:47,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1324822040, now seen corresponding path program 18 times [2024-06-28 01:25:47,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:47,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882658103] [2024-06-28 01:25:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:47,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:47,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:47,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882658103] [2024-06-28 01:25:47,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882658103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:47,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:47,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:47,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162733748] [2024-06-28 01:25:47,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:47,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:47,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:47,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:47,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:48,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:48,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 575 transitions, 9972 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) [2024-06-28 01:25:48,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:48,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:48,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:49,625 INFO L124 PetriNetUnfolderBase]: 3087/5698 cut-off events. [2024-06-28 01:25:49,625 INFO L125 PetriNetUnfolderBase]: For 332009/332236 co-relation queries the response was YES. [2024-06-28 01:25:49,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49267 conditions, 5698 events. 3087/5698 cut-off events. For 332009/332236 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 42687 event pairs, 441 based on Foata normal form. 90/5742 useless extension candidates. Maximal degree in co-relation 49070. Up to 3467 conditions per place. [2024-06-28 01:25:49,725 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 405 selfloop transitions, 208 changer transitions 0/622 dead transitions. [2024-06-28 01:25:49,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 622 transitions, 11985 flow [2024-06-28 01:25:49,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 01:25:49,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:25:49,726 INFO L175 Difference]: Start difference. First operand has 419 places, 575 transitions, 9972 flow. Second operand 10 states and 190 transitions. [2024-06-28 01:25:49,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 622 transitions, 11985 flow [2024-06-28 01:25:51,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 622 transitions, 11573 flow, removed 86 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:51,145 INFO L231 Difference]: Finished difference. Result has 421 places, 582 transitions, 10379 flow [2024-06-28 01:25:51,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9562, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10379, PETRI_PLACES=421, PETRI_TRANSITIONS=582} [2024-06-28 01:25:51,145 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 379 predicate places. [2024-06-28 01:25:51,145 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 582 transitions, 10379 flow [2024-06-28 01:25:51,145 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) [2024-06-28 01:25:51,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:51,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:51,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 01:25:51,146 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:51,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1324830658, now seen corresponding path program 18 times [2024-06-28 01:25:51,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:51,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969872721] [2024-06-28 01:25:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:51,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:52,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:52,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:52,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969872721] [2024-06-28 01:25:52,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969872721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:52,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:52,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:52,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114839326] [2024-06-28 01:25:52,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:52,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:52,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:52,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:52,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:52,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:52,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 582 transitions, 10379 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) [2024-06-28 01:25:52,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:52,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:52,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:54,137 INFO L124 PetriNetUnfolderBase]: 3101/5853 cut-off events. [2024-06-28 01:25:54,137 INFO L125 PetriNetUnfolderBase]: For 330015/330250 co-relation queries the response was YES. [2024-06-28 01:25:54,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50739 conditions, 5853 events. 3101/5853 cut-off events. For 330015/330250 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 44822 event pairs, 543 based on Foata normal form. 94/5884 useless extension candidates. Maximal degree in co-relation 50541. Up to 3993 conditions per place. [2024-06-28 01:25:54,242 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 442 selfloop transitions, 169 changer transitions 0/620 dead transitions. [2024-06-28 01:25:54,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 620 transitions, 11967 flow [2024-06-28 01:25:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:25:54,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:25:54,243 INFO L175 Difference]: Start difference. First operand has 421 places, 582 transitions, 10379 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:25:54,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 620 transitions, 11967 flow [2024-06-28 01:25:55,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 620 transitions, 11537 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:55,882 INFO L231 Difference]: Finished difference. Result has 422 places, 584 transitions, 10451 flow [2024-06-28 01:25:55,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9949, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10451, PETRI_PLACES=422, PETRI_TRANSITIONS=584} [2024-06-28 01:25:55,882 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 380 predicate places. [2024-06-28 01:25:55,882 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 584 transitions, 10451 flow [2024-06-28 01:25:55,883 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) [2024-06-28 01:25:55,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:55,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:55,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 01:25:55,883 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:55,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:55,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1574803440, now seen corresponding path program 19 times [2024-06-28 01:25:55,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:55,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674966720] [2024-06-28 01:25:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:55,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:56,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:56,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674966720] [2024-06-28 01:25:56,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674966720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:56,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:56,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:25:56,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221185454] [2024-06-28 01:25:56,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:56,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:25:56,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:56,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:25:56,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:25:56,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:25:56,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 584 transitions, 10451 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) [2024-06-28 01:25:56,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:56,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:25:56,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:58,298 INFO L124 PetriNetUnfolderBase]: 3118/5688 cut-off events. [2024-06-28 01:25:58,299 INFO L125 PetriNetUnfolderBase]: For 329525/329810 co-relation queries the response was YES. [2024-06-28 01:25:58,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50498 conditions, 5688 events. 3118/5688 cut-off events. For 329525/329810 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 42097 event pairs, 444 based on Foata normal form. 133/5775 useless extension candidates. Maximal degree in co-relation 50301. Up to 3507 conditions per place. [2024-06-28 01:25:58,401 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 420 selfloop transitions, 201 changer transitions 0/630 dead transitions. [2024-06-28 01:25:58,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 630 transitions, 12386 flow [2024-06-28 01:25:58,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:25:58,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:25:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 01:25:58,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026315789473684 [2024-06-28 01:25:58,405 INFO L175 Difference]: Start difference. First operand has 422 places, 584 transitions, 10451 flow. Second operand 10 states and 191 transitions. [2024-06-28 01:25:58,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 630 transitions, 12386 flow [2024-06-28 01:25:59,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 630 transitions, 11829 flow, removed 75 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:59,849 INFO L231 Difference]: Finished difference. Result has 423 places, 588 transitions, 10467 flow [2024-06-28 01:25:59,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9896, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10467, PETRI_PLACES=423, PETRI_TRANSITIONS=588} [2024-06-28 01:25:59,850 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 381 predicate places. [2024-06-28 01:25:59,851 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 588 transitions, 10467 flow [2024-06-28 01:25:59,851 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) [2024-06-28 01:25:59,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:59,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:59,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 01:25:59,853 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:59,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:59,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1215560802, now seen corresponding path program 20 times [2024-06-28 01:25:59,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:59,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064826191] [2024-06-28 01:25:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:59,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:00,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:00,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064826191] [2024-06-28 01:26:00,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064826191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:00,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:00,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:00,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550100382] [2024-06-28 01:26:00,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:00,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:00,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:00,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:00,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:00,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:26:00,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 588 transitions, 10467 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) [2024-06-28 01:26:00,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:00,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:26:00,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:02,403 INFO L124 PetriNetUnfolderBase]: 3158/5887 cut-off events. [2024-06-28 01:26:02,403 INFO L125 PetriNetUnfolderBase]: For 331172/331431 co-relation queries the response was YES. [2024-06-28 01:26:02,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51431 conditions, 5887 events. 3158/5887 cut-off events. For 331172/331431 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 44550 event pairs, 302 based on Foata normal form. 101/5950 useless extension candidates. Maximal degree in co-relation 51234. Up to 3391 conditions per place. [2024-06-28 01:26:02,497 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 376 selfloop transitions, 250 changer transitions 0/635 dead transitions. [2024-06-28 01:26:02,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 635 transitions, 12499 flow [2024-06-28 01:26:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:02,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 01:26:02,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:26:02,499 INFO L175 Difference]: Start difference. First operand has 423 places, 588 transitions, 10467 flow. Second operand 10 states and 190 transitions. [2024-06-28 01:26:02,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 635 transitions, 12499 flow [2024-06-28 01:26:04,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 635 transitions, 12065 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-06-28 01:26:04,054 INFO L231 Difference]: Finished difference. Result has 426 places, 598 transitions, 11016 flow [2024-06-28 01:26:04,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10068, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11016, PETRI_PLACES=426, PETRI_TRANSITIONS=598} [2024-06-28 01:26:04,055 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 384 predicate places. [2024-06-28 01:26:04,055 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 598 transitions, 11016 flow [2024-06-28 01:26:04,055 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) [2024-06-28 01:26:04,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:04,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:04,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 01:26:04,056 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:04,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash -236554334, now seen corresponding path program 2 times [2024-06-28 01:26:04,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:04,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883349620] [2024-06-28 01:26:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:04,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:05,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883349620] [2024-06-28 01:26:05,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883349620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:05,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:05,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:05,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565357660] [2024-06-28 01:26:05,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:05,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:05,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:05,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:05,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:05,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:26:05,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 598 transitions, 11016 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:05,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:05,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:26:05,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:07,004 INFO L124 PetriNetUnfolderBase]: 3020/5610 cut-off events. [2024-06-28 01:26:07,005 INFO L125 PetriNetUnfolderBase]: For 343765/344091 co-relation queries the response was YES. [2024-06-28 01:26:07,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50968 conditions, 5610 events. 3020/5610 cut-off events. For 343765/344091 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 42475 event pairs, 730 based on Foata normal form. 170/5674 useless extension candidates. Maximal degree in co-relation 50770. Up to 4388 conditions per place. [2024-06-28 01:26:07,130 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 530 selfloop transitions, 36 changer transitions 0/634 dead transitions. [2024-06-28 01:26:07,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 634 transitions, 12358 flow [2024-06-28 01:26:07,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:07,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:26:07,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-28 01:26:07,132 INFO L175 Difference]: Start difference. First operand has 426 places, 598 transitions, 11016 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:26:07,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 634 transitions, 12358 flow [2024-06-28 01:26:08,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 634 transitions, 11987 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 01:26:08,720 INFO L231 Difference]: Finished difference. Result has 429 places, 599 transitions, 10757 flow [2024-06-28 01:26:08,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10645, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10757, PETRI_PLACES=429, PETRI_TRANSITIONS=599} [2024-06-28 01:26:08,722 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 387 predicate places. [2024-06-28 01:26:08,722 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 599 transitions, 10757 flow [2024-06-28 01:26:08,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:08,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:08,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:08,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 01:26:08,723 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:08,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:08,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1147140814, now seen corresponding path program 21 times [2024-06-28 01:26:08,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:08,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137236917] [2024-06-28 01:26:08,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:08,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:09,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:09,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137236917] [2024-06-28 01:26:09,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137236917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:09,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:09,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:09,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507869093] [2024-06-28 01:26:09,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:09,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:09,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:09,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:09,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:09,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:26:09,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 599 transitions, 10757 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) [2024-06-28 01:26:09,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:09,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:26:09,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:11,650 INFO L124 PetriNetUnfolderBase]: 3198/6070 cut-off events. [2024-06-28 01:26:11,650 INFO L125 PetriNetUnfolderBase]: For 338477/338710 co-relation queries the response was YES. [2024-06-28 01:26:11,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52882 conditions, 6070 events. 3198/6070 cut-off events. For 338477/338710 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 46944 event pairs, 342 based on Foata normal form. 85/6113 useless extension candidates. Maximal degree in co-relation 52684. Up to 3445 conditions per place. [2024-06-28 01:26:11,746 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 406 selfloop transitions, 227 changer transitions 0/642 dead transitions. [2024-06-28 01:26:11,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 642 transitions, 12827 flow [2024-06-28 01:26:11,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 01:26:11,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-06-28 01:26:11,748 INFO L175 Difference]: Start difference. First operand has 429 places, 599 transitions, 10757 flow. Second operand 10 states and 192 transitions. [2024-06-28 01:26:11,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 642 transitions, 12827 flow [2024-06-28 01:26:13,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 642 transitions, 12702 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 01:26:13,381 INFO L231 Difference]: Finished difference. Result has 431 places, 604 transitions, 11270 flow [2024-06-28 01:26:13,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10636, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11270, PETRI_PLACES=431, PETRI_TRANSITIONS=604} [2024-06-28 01:26:13,382 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 389 predicate places. [2024-06-28 01:26:13,382 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 604 transitions, 11270 flow [2024-06-28 01:26:13,382 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) [2024-06-28 01:26:13,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:13,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:13,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 01:26:13,383 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:13,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:13,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1155423642, now seen corresponding path program 19 times [2024-06-28 01:26:13,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:13,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566131542] [2024-06-28 01:26:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:13,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:14,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:14,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566131542] [2024-06-28 01:26:14,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566131542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:14,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:14,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:14,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934702243] [2024-06-28 01:26:14,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:14,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:14,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:14,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:14,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:14,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:26:14,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 604 transitions, 11270 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) [2024-06-28 01:26:14,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:14,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:26:14,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:16,390 INFO L124 PetriNetUnfolderBase]: 3209/5921 cut-off events. [2024-06-28 01:26:16,390 INFO L125 PetriNetUnfolderBase]: For 349000/349220 co-relation queries the response was YES. [2024-06-28 01:26:16,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53932 conditions, 5921 events. 3209/5921 cut-off events. For 349000/349220 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 44649 event pairs, 503 based on Foata normal form. 46/5884 useless extension candidates. Maximal degree in co-relation 53733. Up to 4482 conditions per place. [2024-06-28 01:26:16,486 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 512 selfloop transitions, 121 changer transitions 0/642 dead transitions. [2024-06-28 01:26:16,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 642 transitions, 12964 flow [2024-06-28 01:26:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:16,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:26:16,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-28 01:26:16,487 INFO L175 Difference]: Start difference. First operand has 431 places, 604 transitions, 11270 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:26:16,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 642 transitions, 12964 flow [2024-06-28 01:26:18,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 642 transitions, 12584 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:26:18,129 INFO L231 Difference]: Finished difference. Result has 434 places, 606 transitions, 11292 flow [2024-06-28 01:26:18,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10890, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11292, PETRI_PLACES=434, PETRI_TRANSITIONS=606} [2024-06-28 01:26:18,129 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 392 predicate places. [2024-06-28 01:26:18,129 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 606 transitions, 11292 flow [2024-06-28 01:26:18,130 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) [2024-06-28 01:26:18,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:18,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:18,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 01:26:18,130 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:18,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:18,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1147149184, now seen corresponding path program 22 times [2024-06-28 01:26:18,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:18,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202229739] [2024-06-28 01:26:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:18,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:19,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:19,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202229739] [2024-06-28 01:26:19,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202229739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:19,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:19,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:19,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737030734] [2024-06-28 01:26:19,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:19,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:19,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:19,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:19,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:19,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:26:19,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 606 transitions, 11292 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) [2024-06-28 01:26:19,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:19,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:26:19,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:20,945 INFO L124 PetriNetUnfolderBase]: 3207/6058 cut-off events. [2024-06-28 01:26:20,945 INFO L125 PetriNetUnfolderBase]: For 347147/347400 co-relation queries the response was YES. [2024-06-28 01:26:21,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53529 conditions, 6058 events. 3207/6058 cut-off events. For 347147/347400 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 46653 event pairs, 342 based on Foata normal form. 87/6101 useless extension candidates. Maximal degree in co-relation 53330. Up to 3460 conditions per place. [2024-06-28 01:26:21,042 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 405 selfloop transitions, 229 changer transitions 0/643 dead transitions. [2024-06-28 01:26:21,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 643 transitions, 12992 flow [2024-06-28 01:26:21,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 01:26:21,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:26:21,043 INFO L175 Difference]: Start difference. First operand has 434 places, 606 transitions, 11292 flow. Second operand 10 states and 190 transitions. [2024-06-28 01:26:21,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 643 transitions, 12992 flow [2024-06-28 01:26:22,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 643 transitions, 12549 flow, removed 102 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:22,721 INFO L231 Difference]: Finished difference. Result has 435 places, 606 transitions, 11317 flow [2024-06-28 01:26:22,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10851, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11317, PETRI_PLACES=435, PETRI_TRANSITIONS=606} [2024-06-28 01:26:22,721 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 393 predicate places. [2024-06-28 01:26:22,721 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 606 transitions, 11317 flow [2024-06-28 01:26:22,722 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) [2024-06-28 01:26:22,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:22,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:22,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 01:26:22,722 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:22,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:22,722 INFO L85 PathProgramCache]: Analyzing trace with hash -236862164, now seen corresponding path program 20 times [2024-06-28 01:26:22,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:22,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419717188] [2024-06-28 01:26:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:22,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:23,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:23,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419717188] [2024-06-28 01:26:23,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419717188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:23,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:23,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:23,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144958397] [2024-06-28 01:26:23,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:23,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:23,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:23,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:23,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:23,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:26:23,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 606 transitions, 11317 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) [2024-06-28 01:26:23,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:23,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:26:23,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:25,679 INFO L124 PetriNetUnfolderBase]: 3231/6076 cut-off events. [2024-06-28 01:26:25,680 INFO L125 PetriNetUnfolderBase]: For 365954/366243 co-relation queries the response was YES. [2024-06-28 01:26:25,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54746 conditions, 6076 events. 3231/6076 cut-off events. For 365954/366243 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 46801 event pairs, 405 based on Foata normal form. 104/6109 useless extension candidates. Maximal degree in co-relation 54547. Up to 3861 conditions per place. [2024-06-28 01:26:25,780 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 438 selfloop transitions, 200 changer transitions 0/647 dead transitions. [2024-06-28 01:26:25,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 647 transitions, 13329 flow [2024-06-28 01:26:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:26:25,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:26:25,782 INFO L175 Difference]: Start difference. First operand has 435 places, 606 transitions, 11317 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:26:25,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 647 transitions, 13329 flow [2024-06-28 01:26:27,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 647 transitions, 13010 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:26:27,585 INFO L231 Difference]: Finished difference. Result has 439 places, 610 transitions, 11714 flow [2024-06-28 01:26:27,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10998, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11714, PETRI_PLACES=439, PETRI_TRANSITIONS=610} [2024-06-28 01:26:27,586 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 397 predicate places. [2024-06-28 01:26:27,586 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 610 transitions, 11714 flow [2024-06-28 01:26:27,586 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) [2024-06-28 01:26:27,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:27,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:27,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 01:26:27,587 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:27,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:27,587 INFO L85 PathProgramCache]: Analyzing trace with hash -245136126, now seen corresponding path program 23 times [2024-06-28 01:26:27,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:27,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606330216] [2024-06-28 01:26:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:27,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:28,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:28,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606330216] [2024-06-28 01:26:28,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606330216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:28,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:28,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:28,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578078737] [2024-06-28 01:26:28,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:28,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:28,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:28,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:28,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:26:28,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 610 transitions, 11714 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) [2024-06-28 01:26:28,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:28,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:26:28,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:30,389 INFO L124 PetriNetUnfolderBase]: 3240/5985 cut-off events. [2024-06-28 01:26:30,390 INFO L125 PetriNetUnfolderBase]: For 372065/372270 co-relation queries the response was YES. [2024-06-28 01:26:30,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54845 conditions, 5985 events. 3240/5985 cut-off events. For 372065/372270 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 45284 event pairs, 507 based on Foata normal form. 47/5947 useless extension candidates. Maximal degree in co-relation 54645. Up to 4508 conditions per place. [2024-06-28 01:26:30,494 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 516 selfloop transitions, 123 changer transitions 0/648 dead transitions. [2024-06-28 01:26:30,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 648 transitions, 13352 flow [2024-06-28 01:26:30,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:30,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:26:30,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:26:30,496 INFO L175 Difference]: Start difference. First operand has 439 places, 610 transitions, 11714 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:26:30,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 648 transitions, 13352 flow [2024-06-28 01:26:32,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 648 transitions, 13050 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-28 01:26:32,580 INFO L231 Difference]: Finished difference. Result has 442 places, 612 transitions, 11752 flow [2024-06-28 01:26:32,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11412, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11752, PETRI_PLACES=442, PETRI_TRANSITIONS=612} [2024-06-28 01:26:32,581 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 400 predicate places. [2024-06-28 01:26:32,581 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 612 transitions, 11752 flow [2024-06-28 01:26:32,581 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) [2024-06-28 01:26:32,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:32,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:32,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 01:26:32,582 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:32,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:32,582 INFO L85 PathProgramCache]: Analyzing trace with hash -244905486, now seen corresponding path program 24 times [2024-06-28 01:26:32,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:32,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821591352] [2024-06-28 01:26:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:32,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:33,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:33,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821591352] [2024-06-28 01:26:33,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821591352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:33,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:33,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:33,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240566937] [2024-06-28 01:26:33,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:33,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:33,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:33,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:33,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:26:33,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 612 transitions, 11752 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) [2024-06-28 01:26:33,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:33,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:26:33,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:35,422 INFO L124 PetriNetUnfolderBase]: 3251/6014 cut-off events. [2024-06-28 01:26:35,423 INFO L125 PetriNetUnfolderBase]: For 357068/357287 co-relation queries the response was YES. [2024-06-28 01:26:35,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55141 conditions, 6014 events. 3251/6014 cut-off events. For 357068/357287 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 45556 event pairs, 489 based on Foata normal form. 54/5987 useless extension candidates. Maximal degree in co-relation 54940. Up to 4402 conditions per place. [2024-06-28 01:26:35,519 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 507 selfloop transitions, 137 changer transitions 0/653 dead transitions. [2024-06-28 01:26:35,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 653 transitions, 13643 flow [2024-06-28 01:26:35,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:35,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:35,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 01:26:35,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:26:35,520 INFO L175 Difference]: Start difference. First operand has 442 places, 612 transitions, 11752 flow. Second operand 10 states and 190 transitions. [2024-06-28 01:26:35,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 653 transitions, 13643 flow [2024-06-28 01:26:37,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 653 transitions, 13269 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:37,436 INFO L231 Difference]: Finished difference. Result has 443 places, 615 transitions, 11781 flow [2024-06-28 01:26:37,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11380, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11781, PETRI_PLACES=443, PETRI_TRANSITIONS=615} [2024-06-28 01:26:37,437 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 401 predicate places. [2024-06-28 01:26:37,437 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 615 transitions, 11781 flow [2024-06-28 01:26:37,437 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) [2024-06-28 01:26:37,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:37,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:37,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 01:26:37,438 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:37,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:37,438 INFO L85 PathProgramCache]: Analyzing trace with hash -244905734, now seen corresponding path program 21 times [2024-06-28 01:26:37,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:37,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145946250] [2024-06-28 01:26:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:37,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:38,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:38,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145946250] [2024-06-28 01:26:38,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145946250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:38,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:38,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803484807] [2024-06-28 01:26:38,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:38,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:38,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:38,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:38,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:38,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:26:38,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 615 transitions, 11781 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) [2024-06-28 01:26:38,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:38,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:26:38,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:40,313 INFO L124 PetriNetUnfolderBase]: 3249/6011 cut-off events. [2024-06-28 01:26:40,313 INFO L125 PetriNetUnfolderBase]: For 346302/346535 co-relation queries the response was YES. [2024-06-28 01:26:40,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54634 conditions, 6011 events. 3249/6011 cut-off events. For 346302/346535 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 45575 event pairs, 497 based on Foata normal form. 56/5983 useless extension candidates. Maximal degree in co-relation 54433. Up to 4470 conditions per place. [2024-06-28 01:26:40,410 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 513 selfloop transitions, 130 changer transitions 0/652 dead transitions. [2024-06-28 01:26:40,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 652 transitions, 13351 flow [2024-06-28 01:26:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:40,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:26:40,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:26:40,411 INFO L175 Difference]: Start difference. First operand has 443 places, 615 transitions, 11781 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:26:40,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 652 transitions, 13351 flow [2024-06-28 01:26:42,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 652 transitions, 13046 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-28 01:26:42,260 INFO L231 Difference]: Finished difference. Result has 446 places, 615 transitions, 11744 flow [2024-06-28 01:26:42,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11476, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11744, PETRI_PLACES=446, PETRI_TRANSITIONS=615} [2024-06-28 01:26:42,261 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 404 predicate places. [2024-06-28 01:26:42,261 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 615 transitions, 11744 flow [2024-06-28 01:26:42,261 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) [2024-06-28 01:26:42,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:42,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:42,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 01:26:42,262 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:42,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:42,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1796456850, now seen corresponding path program 25 times [2024-06-28 01:26:42,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:42,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400604298] [2024-06-28 01:26:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:42,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:43,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:43,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400604298] [2024-06-28 01:26:43,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400604298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:43,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:43,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:43,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173100610] [2024-06-28 01:26:43,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:43,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:43,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:43,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:43,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:43,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:26:43,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 615 transitions, 11744 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) [2024-06-28 01:26:43,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:43,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:26:43,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:45,102 INFO L124 PetriNetUnfolderBase]: 3247/6020 cut-off events. [2024-06-28 01:26:45,102 INFO L125 PetriNetUnfolderBase]: For 332631/332852 co-relation queries the response was YES. [2024-06-28 01:26:45,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54577 conditions, 6020 events. 3247/6020 cut-off events. For 332631/332852 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 45696 event pairs, 485 based on Foata normal form. 56/5995 useless extension candidates. Maximal degree in co-relation 54375. Up to 4397 conditions per place. [2024-06-28 01:26:45,207 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 504 selfloop transitions, 139 changer transitions 0/652 dead transitions. [2024-06-28 01:26:45,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 652 transitions, 13314 flow [2024-06-28 01:26:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 01:26:45,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2024-06-28 01:26:45,208 INFO L175 Difference]: Start difference. First operand has 446 places, 615 transitions, 11744 flow. Second operand 10 states and 189 transitions. [2024-06-28 01:26:45,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 652 transitions, 13314 flow [2024-06-28 01:26:47,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 652 transitions, 12695 flow, removed 64 selfloop flow, removed 11 redundant places. [2024-06-28 01:26:47,026 INFO L231 Difference]: Finished difference. Result has 445 places, 615 transitions, 11411 flow [2024-06-28 01:26:47,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11125, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11411, PETRI_PLACES=445, PETRI_TRANSITIONS=615} [2024-06-28 01:26:47,026 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-28 01:26:47,027 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 615 transitions, 11411 flow [2024-06-28 01:26:47,027 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) [2024-06-28 01:26:47,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:47,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:47,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 01:26:47,027 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:47,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:47,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1155184074, now seen corresponding path program 1 times [2024-06-28 01:26:47,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:47,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014478574] [2024-06-28 01:26:47,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:47,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:47,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:47,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014478574] [2024-06-28 01:26:47,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014478574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:47,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:47,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:26:47,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088751969] [2024-06-28 01:26:47,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:47,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:26:47,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:47,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:26:47,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:26:47,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:26:47,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 615 transitions, 11411 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:47,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:47,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:26:47,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:49,565 INFO L124 PetriNetUnfolderBase]: 3252/5964 cut-off events. [2024-06-28 01:26:49,565 INFO L125 PetriNetUnfolderBase]: For 319315/319535 co-relation queries the response was YES. [2024-06-28 01:26:49,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53199 conditions, 5964 events. 3252/5964 cut-off events. For 319315/319535 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 44973 event pairs, 678 based on Foata normal form. 56/5923 useless extension candidates. Maximal degree in co-relation 52998. Up to 4909 conditions per place. [2024-06-28 01:26:49,683 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 567 selfloop transitions, 67 changer transitions 0/643 dead transitions. [2024-06-28 01:26:49,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 643 transitions, 12823 flow [2024-06-28 01:26:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:26:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:26:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:26:49,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-28 01:26:49,685 INFO L175 Difference]: Start difference. First operand has 445 places, 615 transitions, 11411 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:26:49,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 643 transitions, 12823 flow [2024-06-28 01:26:51,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 643 transitions, 12512 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:51,460 INFO L231 Difference]: Finished difference. Result has 445 places, 615 transitions, 11245 flow [2024-06-28 01:26:51,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11100, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11245, PETRI_PLACES=445, PETRI_TRANSITIONS=615} [2024-06-28 01:26:51,461 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-28 01:26:51,461 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 615 transitions, 11245 flow [2024-06-28 01:26:51,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:51,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:51,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:51,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 01:26:51,461 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:51,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:51,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1302476454, now seen corresponding path program 22 times [2024-06-28 01:26:51,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:51,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817055925] [2024-06-28 01:26:51,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:51,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:52,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:52,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817055925] [2024-06-28 01:26:52,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817055925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:52,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:52,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030961272] [2024-06-28 01:26:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:52,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:52,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:52,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:26:52,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 615 transitions, 11245 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) [2024-06-28 01:26:52,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:52,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:26:52,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:54,382 INFO L124 PetriNetUnfolderBase]: 3255/5974 cut-off events. [2024-06-28 01:26:54,382 INFO L125 PetriNetUnfolderBase]: For 327138/327349 co-relation queries the response was YES. [2024-06-28 01:26:54,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53142 conditions, 5974 events. 3255/5974 cut-off events. For 327138/327349 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 44775 event pairs, 377 based on Foata normal form. 79/6004 useless extension candidates. Maximal degree in co-relation 52940. Up to 4546 conditions per place. [2024-06-28 01:26:54,491 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 527 selfloop transitions, 116 changer transitions 0/652 dead transitions. [2024-06-28 01:26:54,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 652 transitions, 12965 flow [2024-06-28 01:26:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 01:26:54,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-28 01:26:54,492 INFO L175 Difference]: Start difference. First operand has 445 places, 615 transitions, 11245 flow. Second operand 10 states and 183 transitions. [2024-06-28 01:26:54,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 652 transitions, 12965 flow [2024-06-28 01:26:56,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 652 transitions, 12748 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 01:26:56,211 INFO L231 Difference]: Finished difference. Result has 446 places, 617 transitions, 11419 flow [2024-06-28 01:26:56,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11028, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11419, PETRI_PLACES=446, PETRI_TRANSITIONS=617} [2024-06-28 01:26:56,211 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 404 predicate places. [2024-06-28 01:26:56,212 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 617 transitions, 11419 flow [2024-06-28 01:26:56,212 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) [2024-06-28 01:26:56,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:56,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:56,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 01:26:56,212 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:56,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:56,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1302476702, now seen corresponding path program 26 times [2024-06-28 01:26:56,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:56,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953937857] [2024-06-28 01:26:56,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:56,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:56,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:56,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953937857] [2024-06-28 01:26:56,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953937857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:56,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:56,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:56,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311270415] [2024-06-28 01:26:56,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:56,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:56,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:56,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:56,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:57,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:26:57,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 617 transitions, 11419 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) [2024-06-28 01:26:57,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:57,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:26:57,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:58,737 INFO L124 PetriNetUnfolderBase]: 3299/6047 cut-off events. [2024-06-28 01:26:58,738 INFO L125 PetriNetUnfolderBase]: For 362894/363105 co-relation queries the response was YES. [2024-06-28 01:26:58,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54711 conditions, 6047 events. 3299/6047 cut-off events. For 362894/363105 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 45276 event pairs, 377 based on Foata normal form. 82/6080 useless extension candidates. Maximal degree in co-relation 54508. Up to 4581 conditions per place. [2024-06-28 01:26:58,841 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 530 selfloop transitions, 117 changer transitions 0/656 dead transitions. [2024-06-28 01:26:58,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 656 transitions, 13189 flow [2024-06-28 01:26:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:26:58,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:26:58,842 INFO L175 Difference]: Start difference. First operand has 446 places, 617 transitions, 11419 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:26:58,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 656 transitions, 13189 flow [2024-06-28 01:27:00,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 656 transitions, 12814 flow, removed 73 selfloop flow, removed 8 redundant places. [2024-06-28 01:27:00,650 INFO L231 Difference]: Finished difference. Result has 448 places, 620 transitions, 11456 flow [2024-06-28 01:27:00,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11044, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11456, PETRI_PLACES=448, PETRI_TRANSITIONS=620} [2024-06-28 01:27:00,651 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 406 predicate places. [2024-06-28 01:27:00,651 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 620 transitions, 11456 flow [2024-06-28 01:27:00,651 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) [2024-06-28 01:27:00,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:00,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:00,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 01:27:00,651 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:00,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1310750664, now seen corresponding path program 23 times [2024-06-28 01:27:00,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:00,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498003394] [2024-06-28 01:27:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:00,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:01,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:01,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498003394] [2024-06-28 01:27:01,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498003394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:01,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:01,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:01,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827174207] [2024-06-28 01:27:01,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:01,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:01,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:01,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:01,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:01,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:27:01,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 620 transitions, 11456 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) [2024-06-28 01:27:01,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:01,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:27:01,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:03,735 INFO L124 PetriNetUnfolderBase]: 3323/6126 cut-off events. [2024-06-28 01:27:03,736 INFO L125 PetriNetUnfolderBase]: For 370561/370770 co-relation queries the response was YES. [2024-06-28 01:27:03,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55770 conditions, 6126 events. 3323/6126 cut-off events. For 370561/370770 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 46282 event pairs, 376 based on Foata normal form. 82/6162 useless extension candidates. Maximal degree in co-relation 55566. Up to 4575 conditions per place. [2024-06-28 01:27:03,856 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 528 selfloop transitions, 125 changer transitions 0/662 dead transitions. [2024-06-28 01:27:03,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 662 transitions, 13578 flow [2024-06-28 01:27:03,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:27:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:27:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 01:27:03,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:27:03,857 INFO L175 Difference]: Start difference. First operand has 448 places, 620 transitions, 11456 flow. Second operand 10 states and 190 transitions. [2024-06-28 01:27:03,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 662 transitions, 13578 flow [2024-06-28 01:27:05,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 662 transitions, 13202 flow, removed 73 selfloop flow, removed 8 redundant places. [2024-06-28 01:27:05,887 INFO L231 Difference]: Finished difference. Result has 450 places, 624 transitions, 11651 flow [2024-06-28 01:27:05,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11080, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11651, PETRI_PLACES=450, PETRI_TRANSITIONS=624} [2024-06-28 01:27:05,888 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 408 predicate places. [2024-06-28 01:27:05,888 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 624 transitions, 11651 flow [2024-06-28 01:27:05,888 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) [2024-06-28 01:27:05,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:05,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:05,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 01:27:05,889 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:05,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:05,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1849474846, now seen corresponding path program 27 times [2024-06-28 01:27:05,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:05,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697038051] [2024-06-28 01:27:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:05,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:06,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:06,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697038051] [2024-06-28 01:27:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697038051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:06,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:06,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:06,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16012483] [2024-06-28 01:27:06,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:06,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:06,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:06,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:06,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:06,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:27:06,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 624 transitions, 11651 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) [2024-06-28 01:27:06,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:06,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:27:06,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:08,926 INFO L124 PetriNetUnfolderBase]: 3336/6068 cut-off events. [2024-06-28 01:27:08,926 INFO L125 PetriNetUnfolderBase]: For 365942/366144 co-relation queries the response was YES. [2024-06-28 01:27:09,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55194 conditions, 6068 events. 3336/6068 cut-off events. For 365942/366144 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 45322 event pairs, 297 based on Foata normal form. 76/6097 useless extension candidates. Maximal degree in co-relation 54989. Up to 3276 conditions per place. [2024-06-28 01:27:09,038 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 403 selfloop transitions, 258 changer transitions 0/670 dead transitions. [2024-06-28 01:27:09,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 670 transitions, 13897 flow [2024-06-28 01:27:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:27:09,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:27:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 01:27:09,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078947368421053 [2024-06-28 01:27:09,039 INFO L175 Difference]: Start difference. First operand has 450 places, 624 transitions, 11651 flow. Second operand 10 states and 193 transitions. [2024-06-28 01:27:09,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 670 transitions, 13897 flow [2024-06-28 01:27:11,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 670 transitions, 13594 flow, removed 83 selfloop flow, removed 6 redundant places. [2024-06-28 01:27:11,032 INFO L231 Difference]: Finished difference. Result has 455 places, 633 transitions, 12362 flow [2024-06-28 01:27:11,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11348, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12362, PETRI_PLACES=455, PETRI_TRANSITIONS=633} [2024-06-28 01:27:11,033 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 413 predicate places. [2024-06-28 01:27:11,033 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 633 transitions, 12362 flow [2024-06-28 01:27:11,033 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) [2024-06-28 01:27:11,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:11,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:11,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 01:27:11,033 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:11,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:11,034 INFO L85 PathProgramCache]: Analyzing trace with hash 777980644, now seen corresponding path program 28 times [2024-06-28 01:27:11,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:11,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373346527] [2024-06-28 01:27:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:11,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:12,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:12,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373346527] [2024-06-28 01:27:12,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373346527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:12,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:12,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:12,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577173449] [2024-06-28 01:27:12,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:12,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:12,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:12,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:12,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:12,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:27:12,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 633 transitions, 12362 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) [2024-06-28 01:27:12,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:12,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:27:12,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:14,125 INFO L124 PetriNetUnfolderBase]: 3374/6177 cut-off events. [2024-06-28 01:27:14,125 INFO L125 PetriNetUnfolderBase]: For 385788/386002 co-relation queries the response was YES. [2024-06-28 01:27:14,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58394 conditions, 6177 events. 3374/6177 cut-off events. For 385788/386002 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 46380 event pairs, 379 based on Foata normal form. 83/6212 useless extension candidates. Maximal degree in co-relation 58186. Up to 4664 conditions per place. [2024-06-28 01:27:14,247 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 541 selfloop transitions, 124 changer transitions 0/674 dead transitions. [2024-06-28 01:27:14,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 674 transitions, 14345 flow [2024-06-28 01:27:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:27:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:27:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 01:27:14,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2024-06-28 01:27:14,248 INFO L175 Difference]: Start difference. First operand has 455 places, 633 transitions, 12362 flow. Second operand 10 states and 189 transitions. [2024-06-28 01:27:14,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 674 transitions, 14345 flow [2024-06-28 01:27:16,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 674 transitions, 14072 flow, removed 101 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:16,369 INFO L231 Difference]: Finished difference. Result has 461 places, 638 transitions, 12595 flow [2024-06-28 01:27:16,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12141, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12595, PETRI_PLACES=461, PETRI_TRANSITIONS=638} [2024-06-28 01:27:16,374 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 419 predicate places. [2024-06-28 01:27:16,374 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 638 transitions, 12595 flow [2024-06-28 01:27:16,374 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) [2024-06-28 01:27:16,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:16,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:16,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 01:27:16,374 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:16,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:16,375 INFO L85 PathProgramCache]: Analyzing trace with hash -323077542, now seen corresponding path program 24 times [2024-06-28 01:27:16,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:16,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874623308] [2024-06-28 01:27:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:16,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:17,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:17,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:17,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874623308] [2024-06-28 01:27:17,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874623308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:17,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:17,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:17,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507520437] [2024-06-28 01:27:17,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:17,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:17,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:17,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:17,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:17,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:27:17,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 638 transitions, 12595 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) [2024-06-28 01:27:17,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:17,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:27:17,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:19,422 INFO L124 PetriNetUnfolderBase]: 3372/6185 cut-off events. [2024-06-28 01:27:19,422 INFO L125 PetriNetUnfolderBase]: For 375362/375572 co-relation queries the response was YES. [2024-06-28 01:27:19,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57907 conditions, 6185 events. 3372/6185 cut-off events. For 375362/375572 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 46582 event pairs, 382 based on Foata normal form. 84/6222 useless extension candidates. Maximal degree in co-relation 57697. Up to 4695 conditions per place. [2024-06-28 01:27:19,536 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 544 selfloop transitions, 120 changer transitions 0/673 dead transitions. [2024-06-28 01:27:19,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 673 transitions, 14115 flow [2024-06-28 01:27:19,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:27:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:27:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:27:19,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-28 01:27:19,538 INFO L175 Difference]: Start difference. First operand has 461 places, 638 transitions, 12595 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:27:19,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 673 transitions, 14115 flow [2024-06-28 01:27:21,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 673 transitions, 13726 flow, removed 128 selfloop flow, removed 5 redundant places. [2024-06-28 01:27:21,769 INFO L231 Difference]: Finished difference. Result has 466 places, 638 transitions, 12451 flow [2024-06-28 01:27:21,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12206, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12451, PETRI_PLACES=466, PETRI_TRANSITIONS=638} [2024-06-28 01:27:21,769 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 424 predicate places. [2024-06-28 01:27:21,769 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 638 transitions, 12451 flow [2024-06-28 01:27:21,770 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) [2024-06-28 01:27:21,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:21,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:21,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 01:27:21,770 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:21,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:21,770 INFO L85 PathProgramCache]: Analyzing trace with hash -27493224, now seen corresponding path program 2 times [2024-06-28 01:27:21,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:21,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456003003] [2024-06-28 01:27:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:21,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:22,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:22,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456003003] [2024-06-28 01:27:22,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456003003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:22,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:22,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:22,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102223322] [2024-06-28 01:27:22,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:22,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:22,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:22,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:22,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:23,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:27:23,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 638 transitions, 12451 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) [2024-06-28 01:27:23,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:23,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:27:23,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:25,004 INFO L124 PetriNetUnfolderBase]: 3409/6493 cut-off events. [2024-06-28 01:27:25,004 INFO L125 PetriNetUnfolderBase]: For 383927/383996 co-relation queries the response was YES. [2024-06-28 01:27:25,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58866 conditions, 6493 events. 3409/6493 cut-off events. For 383927/383996 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 50927 event pairs, 1026 based on Foata normal form. 18/6475 useless extension candidates. Maximal degree in co-relation 58654. Up to 5234 conditions per place. [2024-06-28 01:27:25,131 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 651 selfloop transitions, 24 changer transitions 0/684 dead transitions. [2024-06-28 01:27:25,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 684 transitions, 14399 flow [2024-06-28 01:27:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:27:25,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:27:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 01:27:25,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-06-28 01:27:25,132 INFO L175 Difference]: Start difference. First operand has 466 places, 638 transitions, 12451 flow. Second operand 11 states and 196 transitions. [2024-06-28 01:27:25,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 684 transitions, 14399 flow [2024-06-28 01:27:27,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 684 transitions, 14119 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 01:27:27,104 INFO L231 Difference]: Finished difference. Result has 469 places, 644 transitions, 12403 flow [2024-06-28 01:27:27,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12171, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12403, PETRI_PLACES=469, PETRI_TRANSITIONS=644} [2024-06-28 01:27:27,105 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 427 predicate places. [2024-06-28 01:27:27,105 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 644 transitions, 12403 flow [2024-06-28 01:27:27,105 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) [2024-06-28 01:27:27,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:27,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:27,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 01:27:27,105 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:27,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:27,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2031249412, now seen corresponding path program 3 times [2024-06-28 01:27:27,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:27,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000202918] [2024-06-28 01:27:27,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:27,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:28,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:28,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000202918] [2024-06-28 01:27:28,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000202918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:28,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:28,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:28,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454797063] [2024-06-28 01:27:28,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:28,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:28,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:28,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:28,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:28,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:27:28,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 644 transitions, 12403 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:28,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:28,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:27:28,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:30,129 INFO L124 PetriNetUnfolderBase]: 3237/6215 cut-off events. [2024-06-28 01:27:30,129 INFO L125 PetriNetUnfolderBase]: For 403090/403381 co-relation queries the response was YES. [2024-06-28 01:27:30,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56698 conditions, 6215 events. 3237/6215 cut-off events. For 403090/403381 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 49006 event pairs, 921 based on Foata normal form. 177/6349 useless extension candidates. Maximal degree in co-relation 56484. Up to 4767 conditions per place. [2024-06-28 01:27:30,248 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 586 selfloop transitions, 19 changer transitions 0/675 dead transitions. [2024-06-28 01:27:30,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 675 transitions, 13803 flow [2024-06-28 01:27:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:27:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:27:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:27:30,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:27:30,249 INFO L175 Difference]: Start difference. First operand has 469 places, 644 transitions, 12403 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:27:30,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 675 transitions, 13803 flow [2024-06-28 01:27:32,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 675 transitions, 13678 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 01:27:32,424 INFO L231 Difference]: Finished difference. Result has 471 places, 645 transitions, 12355 flow [2024-06-28 01:27:32,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12278, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12355, PETRI_PLACES=471, PETRI_TRANSITIONS=645} [2024-06-28 01:27:32,424 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 429 predicate places. [2024-06-28 01:27:32,425 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 645 transitions, 12355 flow [2024-06-28 01:27:32,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:32,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:32,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:32,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 01:27:32,425 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:32,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:32,426 INFO L85 PathProgramCache]: Analyzing trace with hash 777989014, now seen corresponding path program 29 times [2024-06-28 01:27:32,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:32,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675059880] [2024-06-28 01:27:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:32,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:33,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:33,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675059880] [2024-06-28 01:27:33,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675059880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:33,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:33,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:33,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824212877] [2024-06-28 01:27:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:33,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:33,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:33,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:27:33,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 645 transitions, 12355 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) [2024-06-28 01:27:33,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:33,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:27:33,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:35,307 INFO L124 PetriNetUnfolderBase]: 3425/6263 cut-off events. [2024-06-28 01:27:35,307 INFO L125 PetriNetUnfolderBase]: For 375135/375346 co-relation queries the response was YES. [2024-06-28 01:27:35,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57915 conditions, 6263 events. 3425/6263 cut-off events. For 375135/375346 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 47124 event pairs, 384 based on Foata normal form. 81/6292 useless extension candidates. Maximal degree in co-relation 57700. Up to 4745 conditions per place. [2024-06-28 01:27:35,429 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 546 selfloop transitions, 125 changer transitions 0/680 dead transitions. [2024-06-28 01:27:35,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 680 transitions, 13889 flow [2024-06-28 01:27:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:27:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:27:35,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 01:27:35,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-06-28 01:27:35,430 INFO L175 Difference]: Start difference. First operand has 471 places, 645 transitions, 12355 flow. Second operand 10 states and 188 transitions. [2024-06-28 01:27:35,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 680 transitions, 13889 flow [2024-06-28 01:27:37,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 680 transitions, 13772 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 01:27:37,937 INFO L231 Difference]: Finished difference. Result has 474 places, 645 transitions, 12493 flow [2024-06-28 01:27:37,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12238, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12493, PETRI_PLACES=474, PETRI_TRANSITIONS=645} [2024-06-28 01:27:37,938 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 432 predicate places. [2024-06-28 01:27:37,938 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 645 transitions, 12493 flow [2024-06-28 01:27:37,938 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) [2024-06-28 01:27:37,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:37,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:37,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 01:27:37,939 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:37,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:37,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1849167636, now seen corresponding path program 3 times [2024-06-28 01:27:37,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:37,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133903021] [2024-06-28 01:27:37,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:37,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:38,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:38,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133903021] [2024-06-28 01:27:38,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133903021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:38,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:38,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:38,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8770763] [2024-06-28 01:27:38,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:38,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:38,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:38,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:38,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:39,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:27:39,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 645 transitions, 12493 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) [2024-06-28 01:27:39,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:39,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:27:39,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:40,871 INFO L124 PetriNetUnfolderBase]: 3435/6205 cut-off events. [2024-06-28 01:27:40,871 INFO L125 PetriNetUnfolderBase]: For 382201/382378 co-relation queries the response was YES. [2024-06-28 01:27:40,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58216 conditions, 6205 events. 3435/6205 cut-off events. For 382201/382378 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 46244 event pairs, 401 based on Foata normal form. 50/6196 useless extension candidates. Maximal degree in co-relation 58000. Up to 4753 conditions per place. [2024-06-28 01:27:41,004 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 559 selfloop transitions, 116 changer transitions 0/684 dead transitions. [2024-06-28 01:27:41,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 684 transitions, 14417 flow [2024-06-28 01:27:41,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:27:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:27:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:27:41,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:27:41,005 INFO L175 Difference]: Start difference. First operand has 474 places, 645 transitions, 12493 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:27:41,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 684 transitions, 14417 flow [2024-06-28 01:27:43,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 684 transitions, 14172 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 01:27:43,277 INFO L231 Difference]: Finished difference. Result has 476 places, 649 transitions, 12657 flow [2024-06-28 01:27:43,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12248, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12657, PETRI_PLACES=476, PETRI_TRANSITIONS=649} [2024-06-28 01:27:43,277 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 434 predicate places. [2024-06-28 01:27:43,278 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 649 transitions, 12657 flow [2024-06-28 01:27:43,278 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) [2024-06-28 01:27:43,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:43,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:43,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 01:27:43,279 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:43,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:43,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1310750912, now seen corresponding path program 30 times [2024-06-28 01:27:43,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:43,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28948136] [2024-06-28 01:27:43,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:43,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:44,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:44,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28948136] [2024-06-28 01:27:44,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28948136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:44,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:44,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:44,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468918881] [2024-06-28 01:27:44,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:44,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:44,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:44,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:44,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:44,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:27:44,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 649 transitions, 12657 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) [2024-06-28 01:27:44,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:44,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:27:44,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:46,079 INFO L124 PetriNetUnfolderBase]: 3506/6393 cut-off events. [2024-06-28 01:27:46,079 INFO L125 PetriNetUnfolderBase]: For 423300/423511 co-relation queries the response was YES. [2024-06-28 01:27:46,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60759 conditions, 6393 events. 3506/6393 cut-off events. For 423300/423511 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 48122 event pairs, 391 based on Foata normal form. 80/6415 useless extension candidates. Maximal degree in co-relation 60542. Up to 4648 conditions per place. [2024-06-28 01:27:46,210 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 550 selfloop transitions, 139 changer transitions 0/698 dead transitions. [2024-06-28 01:27:46,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 698 transitions, 15355 flow [2024-06-28 01:27:46,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:27:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:27:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-28 01:27:46,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236842105263158 [2024-06-28 01:27:46,211 INFO L175 Difference]: Start difference. First operand has 476 places, 649 transitions, 12657 flow. Second operand 10 states and 199 transitions. [2024-06-28 01:27:46,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 698 transitions, 15355 flow [2024-06-28 01:27:48,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 698 transitions, 15123 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 01:27:48,793 INFO L231 Difference]: Finished difference. Result has 481 places, 658 transitions, 13144 flow [2024-06-28 01:27:48,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12425, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13144, PETRI_PLACES=481, PETRI_TRANSITIONS=658} [2024-06-28 01:27:48,796 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 439 predicate places. [2024-06-28 01:27:48,796 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 658 transitions, 13144 flow [2024-06-28 01:27:48,796 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) [2024-06-28 01:27:48,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:48,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:48,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 01:27:48,796 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:48,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:48,797 INFO L85 PathProgramCache]: Analyzing trace with hash 786032894, now seen corresponding path program 4 times [2024-06-28 01:27:48,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:48,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18297865] [2024-06-28 01:27:48,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:48,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:49,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:49,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18297865] [2024-06-28 01:27:49,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18297865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:49,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:49,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:49,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458816523] [2024-06-28 01:27:49,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:49,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:49,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:49,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:49,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:50,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:27:50,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 658 transitions, 13144 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) [2024-06-28 01:27:50,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:50,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:27:50,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:51,945 INFO L124 PetriNetUnfolderBase]: 3531/6252 cut-off events. [2024-06-28 01:27:51,946 INFO L125 PetriNetUnfolderBase]: For 429707/429916 co-relation queries the response was YES. [2024-06-28 01:27:52,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61483 conditions, 6252 events. 3531/6252 cut-off events. For 429707/429916 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 45998 event pairs, 502 based on Foata normal form. 53/6223 useless extension candidates. Maximal degree in co-relation 61263. Up to 5301 conditions per place. [2024-06-28 01:27:52,068 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 615 selfloop transitions, 69 changer transitions 0/693 dead transitions. [2024-06-28 01:27:52,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 693 transitions, 14786 flow [2024-06-28 01:27:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:27:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:27:52,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:27:52,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-28 01:27:52,070 INFO L175 Difference]: Start difference. First operand has 481 places, 658 transitions, 13144 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:27:52,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 693 transitions, 14786 flow [2024-06-28 01:27:54,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 693 transitions, 14453 flow, removed 101 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:54,758 INFO L231 Difference]: Finished difference. Result has 487 places, 660 transitions, 13052 flow [2024-06-28 01:27:54,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12825, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13052, PETRI_PLACES=487, PETRI_TRANSITIONS=660} [2024-06-28 01:27:54,759 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 445 predicate places. [2024-06-28 01:27:54,759 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 660 transitions, 13052 flow [2024-06-28 01:27:54,759 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) [2024-06-28 01:27:54,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:54,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:54,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 01:27:54,760 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:54,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:54,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1921073334, now seen corresponding path program 4 times [2024-06-28 01:27:54,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:54,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957816772] [2024-06-28 01:27:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:54,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:56,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:56,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957816772] [2024-06-28 01:27:56,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957816772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:56,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:56,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:56,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016845015] [2024-06-28 01:27:56,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:56,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:56,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:56,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:56,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:56,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:27:56,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 660 transitions, 13052 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:56,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:56,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:27:56,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:58,220 INFO L124 PetriNetUnfolderBase]: 3332/6253 cut-off events. [2024-06-28 01:27:58,221 INFO L125 PetriNetUnfolderBase]: For 427661/427879 co-relation queries the response was YES. [2024-06-28 01:27:58,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59258 conditions, 6253 events. 3332/6253 cut-off events. For 427661/427879 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 48487 event pairs, 654 based on Foata normal form. 114/6321 useless extension candidates. Maximal degree in co-relation 59036. Up to 4755 conditions per place. [2024-06-28 01:27:58,343 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 578 selfloop transitions, 44 changer transitions 0/696 dead transitions. [2024-06-28 01:27:58,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 696 transitions, 14516 flow [2024-06-28 01:27:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:27:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:27:58,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 01:27:58,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2024-06-28 01:27:58,344 INFO L175 Difference]: Start difference. First operand has 487 places, 660 transitions, 13052 flow. Second operand 10 states and 189 transitions. [2024-06-28 01:27:58,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 696 transitions, 14516 flow [2024-06-28 01:28:00,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 696 transitions, 14317 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 01:28:00,879 INFO L231 Difference]: Finished difference. Result has 489 places, 661 transitions, 12981 flow [2024-06-28 01:28:00,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12853, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12981, PETRI_PLACES=489, PETRI_TRANSITIONS=661} [2024-06-28 01:28:00,879 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 447 predicate places. [2024-06-28 01:28:00,879 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 661 transitions, 12981 flow [2024-06-28 01:28:00,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:00,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:00,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:00,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 01:28:00,880 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:00,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:00,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1921062422, now seen corresponding path program 31 times [2024-06-28 01:28:00,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:00,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058601586] [2024-06-28 01:28:00,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:00,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:01,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:01,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058601586] [2024-06-28 01:28:01,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058601586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:01,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:01,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:28:01,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625799557] [2024-06-28 01:28:01,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:01,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:28:01,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:01,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:28:01,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:28:01,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:28:01,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 661 transitions, 12981 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) [2024-06-28 01:28:01,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:01,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:28:01,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:04,004 INFO L124 PetriNetUnfolderBase]: 3545/6394 cut-off events. [2024-06-28 01:28:04,005 INFO L125 PetriNetUnfolderBase]: For 424288/424490 co-relation queries the response was YES. [2024-06-28 01:28:04,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61181 conditions, 6394 events. 3545/6394 cut-off events. For 424288/424490 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 47848 event pairs, 302 based on Foata normal form. 76/6411 useless extension candidates. Maximal degree in co-relation 60958. Up to 3573 conditions per place. [2024-06-28 01:28:04,114 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 429 selfloop transitions, 265 changer transitions 0/703 dead transitions. [2024-06-28 01:28:04,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 703 transitions, 15371 flow [2024-06-28 01:28:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 01:28:04,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-06-28 01:28:04,116 INFO L175 Difference]: Start difference. First operand has 489 places, 661 transitions, 12981 flow. Second operand 10 states and 196 transitions. [2024-06-28 01:28:04,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 703 transitions, 15371 flow [2024-06-28 01:28:06,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 703 transitions, 15253 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 01:28:06,994 INFO L231 Difference]: Finished difference. Result has 491 places, 665 transitions, 13522 flow [2024-06-28 01:28:06,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12863, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13522, PETRI_PLACES=491, PETRI_TRANSITIONS=665} [2024-06-28 01:28:06,994 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 449 predicate places. [2024-06-28 01:28:06,994 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 665 transitions, 13522 flow [2024-06-28 01:28:06,995 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) [2024-06-28 01:28:06,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:06,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:06,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 01:28:06,995 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:06,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:06,995 INFO L85 PathProgramCache]: Analyzing trace with hash 786032584, now seen corresponding path program 32 times [2024-06-28 01:28:06,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:06,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474033099] [2024-06-28 01:28:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:06,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:07,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:07,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474033099] [2024-06-28 01:28:07,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474033099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:07,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:07,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:28:07,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657910133] [2024-06-28 01:28:07,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:07,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:28:07,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:07,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:28:07,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:28:07,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:28:07,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 665 transitions, 13522 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) [2024-06-28 01:28:07,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:07,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:28:07,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:10,190 INFO L124 PetriNetUnfolderBase]: 3572/6527 cut-off events. [2024-06-28 01:28:10,191 INFO L125 PetriNetUnfolderBase]: For 445416/445627 co-relation queries the response was YES. [2024-06-28 01:28:10,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63331 conditions, 6527 events. 3572/6527 cut-off events. For 445416/445627 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 49423 event pairs, 391 based on Foata normal form. 79/6548 useless extension candidates. Maximal degree in co-relation 63107. Up to 4872 conditions per place. [2024-06-28 01:28:10,315 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 561 selfloop transitions, 135 changer transitions 0/705 dead transitions. [2024-06-28 01:28:10,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 705 transitions, 15459 flow [2024-06-28 01:28:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:10,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 01:28:10,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-28 01:28:10,316 INFO L175 Difference]: Start difference. First operand has 491 places, 665 transitions, 13522 flow. Second operand 10 states and 194 transitions. [2024-06-28 01:28:10,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 705 transitions, 15459 flow [2024-06-28 01:28:13,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 705 transitions, 14892 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:13,149 INFO L231 Difference]: Finished difference. Result has 495 places, 668 transitions, 13347 flow [2024-06-28 01:28:13,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12961, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13347, PETRI_PLACES=495, PETRI_TRANSITIONS=668} [2024-06-28 01:28:13,150 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 453 predicate places. [2024-06-28 01:28:13,150 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 668 transitions, 13347 flow [2024-06-28 01:28:13,150 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) [2024-06-28 01:28:13,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:13,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:13,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 01:28:13,151 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:13,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:13,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1400754220, now seen corresponding path program 5 times [2024-06-28 01:28:13,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:13,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104286417] [2024-06-28 01:28:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:13,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:14,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:14,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104286417] [2024-06-28 01:28:14,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104286417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:14,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:14,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:28:14,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574667339] [2024-06-28 01:28:14,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:14,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:28:14,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:14,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:28:14,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:28:14,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:28:14,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 668 transitions, 13347 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:14,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:14,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:28:14,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:16,308 INFO L124 PetriNetUnfolderBase]: 3378/6250 cut-off events. [2024-06-28 01:28:16,308 INFO L125 PetriNetUnfolderBase]: For 462953/463213 co-relation queries the response was YES. [2024-06-28 01:28:16,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60796 conditions, 6250 events. 3378/6250 cut-off events. For 462953/463213 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 47799 event pairs, 715 based on Foata normal form. 131/6304 useless extension candidates. Maximal degree in co-relation 60571. Up to 4949 conditions per place. [2024-06-28 01:28:16,435 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 598 selfloop transitions, 31 changer transitions 0/703 dead transitions. [2024-06-28 01:28:16,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 703 transitions, 14823 flow [2024-06-28 01:28:16,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:16,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:28:16,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:28:16,437 INFO L175 Difference]: Start difference. First operand has 495 places, 668 transitions, 13347 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:28:16,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 703 transitions, 14823 flow [2024-06-28 01:28:19,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 703 transitions, 14015 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-28 01:28:19,521 INFO L231 Difference]: Finished difference. Result has 496 places, 669 transitions, 12643 flow [2024-06-28 01:28:19,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12539, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12643, PETRI_PLACES=496, PETRI_TRANSITIONS=669} [2024-06-28 01:28:19,522 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 454 predicate places. [2024-06-28 01:28:19,522 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 669 transitions, 12643 flow [2024-06-28 01:28:19,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:19,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:19,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:19,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 01:28:19,523 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:19,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:19,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1931262414, now seen corresponding path program 6 times [2024-06-28 01:28:19,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:19,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700999326] [2024-06-28 01:28:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:19,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:20,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:20,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700999326] [2024-06-28 01:28:20,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700999326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:20,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:20,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:28:20,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370266843] [2024-06-28 01:28:20,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:20,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:28:20,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:20,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:28:20,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:28:20,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:28:20,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 669 transitions, 12643 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:20,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:20,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:28:20,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:23,277 INFO L124 PetriNetUnfolderBase]: 3372/6421 cut-off events. [2024-06-28 01:28:23,278 INFO L125 PetriNetUnfolderBase]: For 451090/451399 co-relation queries the response was YES. [2024-06-28 01:28:23,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58131 conditions, 6421 events. 3372/6421 cut-off events. For 451090/451399 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 50619 event pairs, 921 based on Foata normal form. 184/6544 useless extension candidates. Maximal degree in co-relation 57907. Up to 4915 conditions per place. [2024-06-28 01:28:23,431 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 611 selfloop transitions, 21 changer transitions 0/706 dead transitions. [2024-06-28 01:28:23,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 706 transitions, 14133 flow [2024-06-28 01:28:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:23,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:23,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:28:23,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:28:23,449 INFO L175 Difference]: Start difference. First operand has 496 places, 669 transitions, 12643 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:28:23,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 706 transitions, 14133 flow [2024-06-28 01:28:26,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 706 transitions, 14029 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 01:28:26,364 INFO L231 Difference]: Finished difference. Result has 498 places, 670 transitions, 12625 flow [2024-06-28 01:28:26,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12539, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12625, PETRI_PLACES=498, PETRI_TRANSITIONS=670} [2024-06-28 01:28:26,365 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 456 predicate places. [2024-06-28 01:28:26,365 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 670 transitions, 12625 flow [2024-06-28 01:28:26,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:26,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:26,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:26,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 01:28:26,366 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:26,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:26,366 INFO L85 PathProgramCache]: Analyzing trace with hash -27839184, now seen corresponding path program 5 times [2024-06-28 01:28:26,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:26,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279364195] [2024-06-28 01:28:26,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:26,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:27,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:27,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279364195] [2024-06-28 01:28:27,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279364195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:27,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:27,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:27,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992258383] [2024-06-28 01:28:27,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:27,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:27,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:27,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:27,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:27,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:28:27,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 670 transitions, 12625 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:27,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:27,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:28:27,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:29,335 INFO L124 PetriNetUnfolderBase]: 3583/6770 cut-off events. [2024-06-28 01:28:29,335 INFO L125 PetriNetUnfolderBase]: For 427661/427746 co-relation queries the response was YES. [2024-06-28 01:28:29,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60083 conditions, 6770 events. 3583/6770 cut-off events. For 427661/427746 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 53085 event pairs, 1042 based on Foata normal form. 22/6748 useless extension candidates. Maximal degree in co-relation 59858. Up to 5511 conditions per place. [2024-06-28 01:28:29,476 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 667 selfloop transitions, 23 changer transitions 0/699 dead transitions. [2024-06-28 01:28:29,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 699 transitions, 14161 flow [2024-06-28 01:28:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 01:28:29,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-06-28 01:28:29,477 INFO L175 Difference]: Start difference. First operand has 498 places, 670 transitions, 12625 flow. Second operand 9 states and 161 transitions. [2024-06-28 01:28:29,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 699 transitions, 14161 flow [2024-06-28 01:28:32,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 699 transitions, 14033 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 01:28:32,116 INFO L231 Difference]: Finished difference. Result has 499 places, 670 transitions, 12553 flow [2024-06-28 01:28:32,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12497, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12553, PETRI_PLACES=499, PETRI_TRANSITIONS=670} [2024-06-28 01:28:32,117 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 457 predicate places. [2024-06-28 01:28:32,117 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 670 transitions, 12553 flow [2024-06-28 01:28:32,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:32,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:32,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:32,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 01:28:32,118 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:32,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:32,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1920765504, now seen corresponding path program 25 times [2024-06-28 01:28:32,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:32,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178030167] [2024-06-28 01:28:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:32,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:33,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:33,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178030167] [2024-06-28 01:28:33,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178030167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:33,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:33,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:28:33,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441788259] [2024-06-28 01:28:33,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:33,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:28:33,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:33,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:28:33,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:28:33,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:28:33,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 670 transitions, 12553 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) [2024-06-28 01:28:33,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:33,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:28:33,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:35,594 INFO L124 PetriNetUnfolderBase]: 3583/6824 cut-off events. [2024-06-28 01:28:35,595 INFO L125 PetriNetUnfolderBase]: For 419884/420052 co-relation queries the response was YES. [2024-06-28 01:28:35,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59703 conditions, 6824 events. 3583/6824 cut-off events. For 419884/420052 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 54212 event pairs, 362 based on Foata normal form. 86/6874 useless extension candidates. Maximal degree in co-relation 59477. Up to 4201 conditions per place. [2024-06-28 01:28:35,744 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 478 selfloop transitions, 220 changer transitions 0/707 dead transitions. [2024-06-28 01:28:35,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 707 transitions, 14297 flow [2024-06-28 01:28:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:28:35,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:28:35,746 INFO L175 Difference]: Start difference. First operand has 499 places, 670 transitions, 12553 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:28:35,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 707 transitions, 14297 flow [2024-06-28 01:28:38,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 707 transitions, 14250 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 01:28:38,862 INFO L231 Difference]: Finished difference. Result has 501 places, 672 transitions, 13115 flow [2024-06-28 01:28:38,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12506, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13115, PETRI_PLACES=501, PETRI_TRANSITIONS=672} [2024-06-28 01:28:38,862 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 459 predicate places. [2024-06-28 01:28:38,863 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 672 transitions, 13115 flow [2024-06-28 01:28:38,863 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) [2024-06-28 01:28:38,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:38,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:38,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 01:28:38,863 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:38,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:38,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1849466166, now seen corresponding path program 6 times [2024-06-28 01:28:38,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:38,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187591991] [2024-06-28 01:28:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:38,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:39,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:39,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187591991] [2024-06-28 01:28:39,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187591991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:39,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:39,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:28:39,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243612304] [2024-06-28 01:28:39,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:39,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:28:39,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:39,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:28:39,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:28:40,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:28:40,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 672 transitions, 13115 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) [2024-06-28 01:28:40,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:40,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:28:40,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:42,030 INFO L124 PetriNetUnfolderBase]: 3581/6441 cut-off events. [2024-06-28 01:28:42,030 INFO L125 PetriNetUnfolderBase]: For 421028/421189 co-relation queries the response was YES. [2024-06-28 01:28:42,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59959 conditions, 6441 events. 3581/6441 cut-off events. For 421028/421189 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 48152 event pairs, 410 based on Foata normal form. 50/6430 useless extension candidates. Maximal degree in co-relation 59733. Up to 5013 conditions per place. [2024-06-28 01:28:42,166 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 585 selfloop transitions, 114 changer transitions 0/708 dead transitions. [2024-06-28 01:28:42,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 708 transitions, 14767 flow [2024-06-28 01:28:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:28:42,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-28 01:28:42,167 INFO L175 Difference]: Start difference. First operand has 501 places, 672 transitions, 13115 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:28:42,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 708 transitions, 14767 flow [2024-06-28 01:28:45,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 708 transitions, 14174 flow, removed 78 selfloop flow, removed 8 redundant places. [2024-06-28 01:28:45,276 INFO L231 Difference]: Finished difference. Result has 503 places, 674 transitions, 12829 flow [2024-06-28 01:28:45,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12522, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12829, PETRI_PLACES=503, PETRI_TRANSITIONS=674} [2024-06-28 01:28:45,277 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 461 predicate places. [2024-06-28 01:28:45,277 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 674 transitions, 12829 flow [2024-06-28 01:28:45,277 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) [2024-06-28 01:28:45,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:45,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:45,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 01:28:45,277 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:45,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:45,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1677511308, now seen corresponding path program 33 times [2024-06-28 01:28:45,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:45,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474840808] [2024-06-28 01:28:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:45,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:46,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:46,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474840808] [2024-06-28 01:28:46,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474840808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:46,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:46,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:28:46,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092814080] [2024-06-28 01:28:46,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:46,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:28:46,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:46,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:28:46,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:28:46,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:28:46,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 674 transitions, 12829 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) [2024-06-28 01:28:46,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:46,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:28:46,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:48,206 INFO L124 PetriNetUnfolderBase]: 3645/6610 cut-off events. [2024-06-28 01:28:48,207 INFO L125 PetriNetUnfolderBase]: For 452610/452796 co-relation queries the response was YES. [2024-06-28 01:28:48,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61269 conditions, 6610 events. 3645/6610 cut-off events. For 452610/452796 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 49823 event pairs, 355 based on Foata normal form. 77/6630 useless extension candidates. Maximal degree in co-relation 61042. Up to 2814 conditions per place. [2024-06-28 01:28:48,340 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 413 selfloop transitions, 299 changer transitions 0/721 dead transitions. [2024-06-28 01:28:48,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 721 transitions, 15641 flow [2024-06-28 01:28:48,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:48,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:48,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 01:28:48,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-28 01:28:48,342 INFO L175 Difference]: Start difference. First operand has 503 places, 674 transitions, 12829 flow. Second operand 10 states and 200 transitions. [2024-06-28 01:28:48,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 721 transitions, 15641 flow [2024-06-28 01:28:51,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 721 transitions, 15306 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-28 01:28:51,342 INFO L231 Difference]: Finished difference. Result has 506 places, 683 transitions, 13776 flow [2024-06-28 01:28:51,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12494, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13776, PETRI_PLACES=506, PETRI_TRANSITIONS=683} [2024-06-28 01:28:51,343 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 464 predicate places. [2024-06-28 01:28:51,343 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 683 transitions, 13776 flow [2024-06-28 01:28:51,343 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) [2024-06-28 01:28:51,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:51,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:51,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 01:28:51,344 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:51,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:51,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1400753848, now seen corresponding path program 7 times [2024-06-28 01:28:51,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:51,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353721697] [2024-06-28 01:28:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:51,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:52,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:52,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353721697] [2024-06-28 01:28:52,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353721697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:52,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:52,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:28:52,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324242165] [2024-06-28 01:28:52,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:52,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:28:52,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:52,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:28:52,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:28:52,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:28:52,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 683 transitions, 13776 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) [2024-06-28 01:28:52,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:52,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:28:52,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:54,561 INFO L124 PetriNetUnfolderBase]: 3662/6471 cut-off events. [2024-06-28 01:28:54,561 INFO L125 PetriNetUnfolderBase]: For 467351/467544 co-relation queries the response was YES. [2024-06-28 01:28:54,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63333 conditions, 6471 events. 3662/6471 cut-off events. For 467351/467544 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 47743 event pairs, 524 based on Foata normal form. 54/6445 useless extension candidates. Maximal degree in co-relation 63104. Up to 5472 conditions per place. [2024-06-28 01:28:54,693 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 636 selfloop transitions, 76 changer transitions 0/721 dead transitions. [2024-06-28 01:28:54,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 721 transitions, 15408 flow [2024-06-28 01:28:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:28:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:28:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 01:28:54,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-06-28 01:28:54,694 INFO L175 Difference]: Start difference. First operand has 506 places, 683 transitions, 13776 flow. Second operand 11 states and 199 transitions. [2024-06-28 01:28:54,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 721 transitions, 15408 flow [2024-06-28 01:28:58,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 721 transitions, 15057 flow, removed 105 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:58,154 INFO L231 Difference]: Finished difference. Result has 513 places, 683 transitions, 13583 flow [2024-06-28 01:28:58,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13425, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13583, PETRI_PLACES=513, PETRI_TRANSITIONS=683} [2024-06-28 01:28:58,155 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 471 predicate places. [2024-06-28 01:28:58,155 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 683 transitions, 13583 flow [2024-06-28 01:28:58,155 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) [2024-06-28 01:28:58,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:58,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:58,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 01:28:58,155 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:58,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:58,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1311047582, now seen corresponding path program 34 times [2024-06-28 01:28:58,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:58,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584965312] [2024-06-28 01:28:58,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:58,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:58,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:58,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584965312] [2024-06-28 01:28:58,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584965312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:58,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:58,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:28:58,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237519629] [2024-06-28 01:28:58,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:58,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:28:58,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:58,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:28:58,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:28:59,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:28:59,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 683 transitions, 13583 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) [2024-06-28 01:28:59,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:59,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:28:59,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:01,362 INFO L124 PetriNetUnfolderBase]: 3648/6645 cut-off events. [2024-06-28 01:29:01,363 INFO L125 PetriNetUnfolderBase]: For 443766/443961 co-relation queries the response was YES. [2024-06-28 01:29:01,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62692 conditions, 6645 events. 3648/6645 cut-off events. For 443766/443961 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 50435 event pairs, 407 based on Foata normal form. 81/6671 useless extension candidates. Maximal degree in co-relation 62461. Up to 4999 conditions per place. [2024-06-28 01:29:01,494 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 572 selfloop transitions, 138 changer transitions 0/719 dead transitions. [2024-06-28 01:29:01,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 719 transitions, 15199 flow [2024-06-28 01:29:01,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 01:29:01,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-06-28 01:29:01,496 INFO L175 Difference]: Start difference. First operand has 513 places, 683 transitions, 13583 flow. Second operand 10 states and 192 transitions. [2024-06-28 01:29:01,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 719 transitions, 15199 flow [2024-06-28 01:29:04,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 719 transitions, 14975 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-28 01:29:04,705 INFO L231 Difference]: Finished difference. Result has 513 places, 683 transitions, 13640 flow [2024-06-28 01:29:04,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13359, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13640, PETRI_PLACES=513, PETRI_TRANSITIONS=683} [2024-06-28 01:29:04,706 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 471 predicate places. [2024-06-28 01:29:04,706 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 683 transitions, 13640 flow [2024-06-28 01:29:04,706 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) [2024-06-28 01:29:04,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:04,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:04,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 01:29:04,706 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:04,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:04,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2031606284, now seen corresponding path program 35 times [2024-06-28 01:29:04,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:04,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411019051] [2024-06-28 01:29:04,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:04,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:05,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:05,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411019051] [2024-06-28 01:29:05,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411019051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:05,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:05,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:29:05,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966898824] [2024-06-28 01:29:05,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:05,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:29:05,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:05,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:29:05,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:29:05,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:29:05,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 683 transitions, 13640 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) [2024-06-28 01:29:05,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:05,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:29:05,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:08,159 INFO L124 PetriNetUnfolderBase]: 3642/6868 cut-off events. [2024-06-28 01:29:08,160 INFO L125 PetriNetUnfolderBase]: For 447407/447468 co-relation queries the response was YES. [2024-06-28 01:29:08,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63044 conditions, 6868 events. 3642/6868 cut-off events. For 447407/447468 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 54018 event pairs, 1052 based on Foata normal form. 20/6845 useless extension candidates. Maximal degree in co-relation 62813. Up to 5656 conditions per place. [2024-06-28 01:29:08,293 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 690 selfloop transitions, 18 changer transitions 0/717 dead transitions. [2024-06-28 01:29:08,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 717 transitions, 15240 flow [2024-06-28 01:29:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:08,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:29:08,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-28 01:29:08,295 INFO L175 Difference]: Start difference. First operand has 513 places, 683 transitions, 13640 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:29:08,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 717 transitions, 15240 flow [2024-06-28 01:29:11,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 717 transitions, 14903 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 01:29:11,323 INFO L231 Difference]: Finished difference. Result has 514 places, 683 transitions, 13344 flow [2024-06-28 01:29:11,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13303, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13344, PETRI_PLACES=514, PETRI_TRANSITIONS=683} [2024-06-28 01:29:11,324 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 472 predicate places. [2024-06-28 01:29:11,324 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 683 transitions, 13344 flow [2024-06-28 01:29:11,325 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) [2024-06-28 01:29:11,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:11,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:11,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 01:29:11,325 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:11,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:11,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1849177866, now seen corresponding path program 8 times [2024-06-28 01:29:11,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:11,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723077439] [2024-06-28 01:29:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:11,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:12,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:12,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723077439] [2024-06-28 01:29:12,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723077439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:12,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:12,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:29:12,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775444902] [2024-06-28 01:29:12,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:12,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:29:12,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:12,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:29:12,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:29:12,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:29:12,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 683 transitions, 13344 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) [2024-06-28 01:29:12,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:12,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:29:12,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:14,641 INFO L124 PetriNetUnfolderBase]: 3627/6492 cut-off events. [2024-06-28 01:29:14,641 INFO L125 PetriNetUnfolderBase]: For 427424/427585 co-relation queries the response was YES. [2024-06-28 01:29:14,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61030 conditions, 6492 events. 3627/6492 cut-off events. For 427424/427585 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 48528 event pairs, 411 based on Foata normal form. 50/6481 useless extension candidates. Maximal degree in co-relation 60798. Up to 5085 conditions per place. [2024-06-28 01:29:14,769 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 595 selfloop transitions, 113 changer transitions 0/717 dead transitions. [2024-06-28 01:29:14,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 717 transitions, 14944 flow [2024-06-28 01:29:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:29:14,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:29:14,770 INFO L175 Difference]: Start difference. First operand has 514 places, 683 transitions, 13344 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:29:14,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 717 transitions, 14944 flow [2024-06-28 01:29:18,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 717 transitions, 14845 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 01:29:18,153 INFO L231 Difference]: Finished difference. Result has 515 places, 683 transitions, 13476 flow [2024-06-28 01:29:18,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13245, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13476, PETRI_PLACES=515, PETRI_TRANSITIONS=683} [2024-06-28 01:29:18,154 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 473 predicate places. [2024-06-28 01:29:18,154 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 683 transitions, 13476 flow [2024-06-28 01:29:18,154 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) [2024-06-28 01:29:18,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:18,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:18,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 01:29:18,155 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:18,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:18,155 INFO L85 PathProgramCache]: Analyzing trace with hash 796057138, now seen corresponding path program 1 times [2024-06-28 01:29:18,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:18,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915105299] [2024-06-28 01:29:18,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:18,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:18,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:18,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915105299] [2024-06-28 01:29:18,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915105299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:18,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:18,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:29:18,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212256134] [2024-06-28 01:29:18,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:18,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:29:18,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:18,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:29:18,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:29:19,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:29:19,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 683 transitions, 13476 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) [2024-06-28 01:29:19,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:19,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:29:19,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:21,458 INFO L124 PetriNetUnfolderBase]: 3697/6717 cut-off events. [2024-06-28 01:29:21,458 INFO L125 PetriNetUnfolderBase]: For 456240/456579 co-relation queries the response was YES. [2024-06-28 01:29:21,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62957 conditions, 6717 events. 3697/6717 cut-off events. For 456240/456579 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 51379 event pairs, 877 based on Foata normal form. 70/6662 useless extension candidates. Maximal degree in co-relation 62724. Up to 5532 conditions per place. [2024-06-28 01:29:21,612 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 631 selfloop transitions, 100 changer transitions 0/740 dead transitions. [2024-06-28 01:29:21,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 740 transitions, 15387 flow [2024-06-28 01:29:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:29:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:29:21,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:29:21,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-28 01:29:21,613 INFO L175 Difference]: Start difference. First operand has 515 places, 683 transitions, 13476 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:29:21,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 740 transitions, 15387 flow [2024-06-28 01:29:24,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 740 transitions, 15149 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 01:29:24,876 INFO L231 Difference]: Finished difference. Result has 520 places, 699 transitions, 13801 flow [2024-06-28 01:29:24,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13238, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13801, PETRI_PLACES=520, PETRI_TRANSITIONS=699} [2024-06-28 01:29:24,877 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 478 predicate places. [2024-06-28 01:29:24,877 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 699 transitions, 13801 flow [2024-06-28 01:29:24,877 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) [2024-06-28 01:29:24,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:24,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:24,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 01:29:24,877 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:24,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:24,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1931939280, now seen corresponding path program 2 times [2024-06-28 01:29:24,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:24,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253248181] [2024-06-28 01:29:24,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:24,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:25,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:25,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253248181] [2024-06-28 01:29:25,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253248181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:25,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:25,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:29:25,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590613667] [2024-06-28 01:29:25,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:25,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:29:25,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:25,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:29:25,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:29:25,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:29:25,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 699 transitions, 13801 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) [2024-06-28 01:29:25,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:25,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:29:25,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:28,262 INFO L124 PetriNetUnfolderBase]: 3731/6786 cut-off events. [2024-06-28 01:29:28,263 INFO L125 PetriNetUnfolderBase]: For 469538/469895 co-relation queries the response was YES. [2024-06-28 01:29:28,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63395 conditions, 6786 events. 3731/6786 cut-off events. For 469538/469895 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 52057 event pairs, 876 based on Foata normal form. 78/6739 useless extension candidates. Maximal degree in co-relation 63158. Up to 5598 conditions per place. [2024-06-28 01:29:28,406 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 638 selfloop transitions, 99 changer transitions 0/746 dead transitions. [2024-06-28 01:29:28,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 746 transitions, 15520 flow [2024-06-28 01:29:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:29:28,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:29:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:29:28,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-28 01:29:28,407 INFO L175 Difference]: Start difference. First operand has 520 places, 699 transitions, 13801 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:29:28,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 746 transitions, 15520 flow [2024-06-28 01:29:31,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 746 transitions, 15352 flow, removed 74 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:31,725 INFO L231 Difference]: Finished difference. Result has 529 places, 702 transitions, 13907 flow [2024-06-28 01:29:31,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13633, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13907, PETRI_PLACES=529, PETRI_TRANSITIONS=702} [2024-06-28 01:29:31,725 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 487 predicate places. [2024-06-28 01:29:31,725 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 702 transitions, 13907 flow [2024-06-28 01:29:31,725 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) [2024-06-28 01:29:31,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:31,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:31,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 01:29:31,726 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:31,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:31,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2022498030, now seen corresponding path program 3 times [2024-06-28 01:29:31,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:31,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377332417] [2024-06-28 01:29:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:31,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:32,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:32,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377332417] [2024-06-28 01:29:32,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377332417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:32,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:32,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:29:32,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630710621] [2024-06-28 01:29:32,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:32,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:29:32,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:32,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:29:32,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:29:32,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:29:32,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 702 transitions, 13907 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) [2024-06-28 01:29:32,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:32,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:29:32,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:34,880 INFO L124 PetriNetUnfolderBase]: 3758/6858 cut-off events. [2024-06-28 01:29:34,880 INFO L125 PetriNetUnfolderBase]: For 471787/472134 co-relation queries the response was YES. [2024-06-28 01:29:34,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64277 conditions, 6858 events. 3758/6858 cut-off events. For 471787/472134 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 52851 event pairs, 897 based on Foata normal form. 73/6798 useless extension candidates. Maximal degree in co-relation 64037. Up to 5623 conditions per place. [2024-06-28 01:29:35,013 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 629 selfloop transitions, 110 changer transitions 0/748 dead transitions. [2024-06-28 01:29:35,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 748 transitions, 15645 flow [2024-06-28 01:29:35,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:29:35,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:29:35,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 01:29:35,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2024-06-28 01:29:35,014 INFO L175 Difference]: Start difference. First operand has 529 places, 702 transitions, 13907 flow. Second operand 11 states and 204 transitions. [2024-06-28 01:29:35,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 748 transitions, 15645 flow [2024-06-28 01:29:38,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 748 transitions, 15455 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:38,267 INFO L231 Difference]: Finished difference. Result has 533 places, 704 transitions, 14008 flow [2024-06-28 01:29:38,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13717, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14008, PETRI_PLACES=533, PETRI_TRANSITIONS=704} [2024-06-28 01:29:38,268 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 491 predicate places. [2024-06-28 01:29:38,268 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 704 transitions, 14008 flow [2024-06-28 01:29:38,268 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) [2024-06-28 01:29:38,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:38,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:38,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 01:29:38,268 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:38,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:38,269 INFO L85 PathProgramCache]: Analyzing trace with hash 675451732, now seen corresponding path program 4 times [2024-06-28 01:29:38,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:38,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500102684] [2024-06-28 01:29:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:38,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:39,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:39,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500102684] [2024-06-28 01:29:39,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500102684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:39,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:39,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:29:39,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412479937] [2024-06-28 01:29:39,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:39,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:29:39,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:39,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:29:39,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:29:39,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:29:39,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 704 transitions, 14008 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) [2024-06-28 01:29:39,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:39,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:29:39,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:41,541 INFO L124 PetriNetUnfolderBase]: 3815/6957 cut-off events. [2024-06-28 01:29:41,541 INFO L125 PetriNetUnfolderBase]: For 482448/482805 co-relation queries the response was YES. [2024-06-28 01:29:41,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64907 conditions, 6957 events. 3815/6957 cut-off events. For 482448/482805 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 53659 event pairs, 850 based on Foata normal form. 78/6902 useless extension candidates. Maximal degree in co-relation 64666. Up to 5652 conditions per place. [2024-06-28 01:29:41,676 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 643 selfloop transitions, 103 changer transitions 0/755 dead transitions. [2024-06-28 01:29:41,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 755 transitions, 15790 flow [2024-06-28 01:29:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:29:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:29:41,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:29:41,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-28 01:29:41,678 INFO L175 Difference]: Start difference. First operand has 533 places, 704 transitions, 14008 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:29:41,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 755 transitions, 15790 flow [2024-06-28 01:29:44,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 755 transitions, 15542 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 01:29:44,929 INFO L231 Difference]: Finished difference. Result has 537 places, 713 transitions, 14132 flow [2024-06-28 01:29:44,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13760, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14132, PETRI_PLACES=537, PETRI_TRANSITIONS=713} [2024-06-28 01:29:44,929 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 495 predicate places. [2024-06-28 01:29:44,929 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 713 transitions, 14132 flow [2024-06-28 01:29:44,930 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) [2024-06-28 01:29:44,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:44,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:44,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 01:29:44,930 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:44,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:44,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2021523762, now seen corresponding path program 1 times [2024-06-28 01:29:44,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:44,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645376985] [2024-06-28 01:29:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:44,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:45,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:45,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645376985] [2024-06-28 01:29:45,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645376985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:45,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:45,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:29:45,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702799941] [2024-06-28 01:29:45,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:45,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:29:45,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:45,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:29:45,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:29:45,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:29:45,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 713 transitions, 14132 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:45,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:45,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:29:45,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:48,371 INFO L124 PetriNetUnfolderBase]: 3833/7006 cut-off events. [2024-06-28 01:29:48,372 INFO L125 PetriNetUnfolderBase]: For 499836/500195 co-relation queries the response was YES. [2024-06-28 01:29:48,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66491 conditions, 7006 events. 3833/7006 cut-off events. For 499836/500195 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 54168 event pairs, 909 based on Foata normal form. 85/6965 useless extension candidates. Maximal degree in co-relation 66247. Up to 5719 conditions per place. [2024-06-28 01:29:48,524 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 635 selfloop transitions, 120 changer transitions 0/764 dead transitions. [2024-06-28 01:29:48,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 764 transitions, 16053 flow [2024-06-28 01:29:48,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:29:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:29:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-06-28 01:29:48,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:29:48,526 INFO L175 Difference]: Start difference. First operand has 537 places, 713 transitions, 14132 flow. Second operand 12 states and 222 transitions. [2024-06-28 01:29:48,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 764 transitions, 16053 flow [2024-06-28 01:29:51,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 764 transitions, 15857 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:51,996 INFO L231 Difference]: Finished difference. Result has 542 places, 715 transitions, 14315 flow [2024-06-28 01:29:51,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13936, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14315, PETRI_PLACES=542, PETRI_TRANSITIONS=715} [2024-06-28 01:29:51,997 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 500 predicate places. [2024-06-28 01:29:51,997 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 715 transitions, 14315 flow [2024-06-28 01:29:51,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:51,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:51,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:51,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 01:29:51,998 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:51,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:51,998 INFO L85 PathProgramCache]: Analyzing trace with hash -526966874, now seen corresponding path program 5 times [2024-06-28 01:29:51,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:51,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421946953] [2024-06-28 01:29:51,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:51,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:52,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:52,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421946953] [2024-06-28 01:29:52,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421946953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:52,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:52,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:29:52,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396848236] [2024-06-28 01:29:52,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:52,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:29:52,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:52,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:29:52,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:29:52,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:29:52,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 715 transitions, 14315 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) [2024-06-28 01:29:52,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:52,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:29:52,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:55,424 INFO L124 PetriNetUnfolderBase]: 3910/7119 cut-off events. [2024-06-28 01:29:55,424 INFO L125 PetriNetUnfolderBase]: For 507326/507683 co-relation queries the response was YES. [2024-06-28 01:29:55,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67531 conditions, 7119 events. 3910/7119 cut-off events. For 507326/507683 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 55013 event pairs, 958 based on Foata normal form. 78/7060 useless extension candidates. Maximal degree in co-relation 67286. Up to 5914 conditions per place. [2024-06-28 01:29:55,580 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 644 selfloop transitions, 108 changer transitions 0/761 dead transitions. [2024-06-28 01:29:55,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 761 transitions, 16107 flow [2024-06-28 01:29:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:29:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:29:55,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 01:29:55,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-06-28 01:29:55,582 INFO L175 Difference]: Start difference. First operand has 542 places, 715 transitions, 14315 flow. Second operand 11 states and 201 transitions. [2024-06-28 01:29:55,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 761 transitions, 16107 flow [2024-06-28 01:29:59,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 761 transitions, 15754 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-28 01:29:59,431 INFO L231 Difference]: Finished difference. Result has 544 places, 724 transitions, 14344 flow [2024-06-28 01:29:59,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13962, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14344, PETRI_PLACES=544, PETRI_TRANSITIONS=724} [2024-06-28 01:29:59,432 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 502 predicate places. [2024-06-28 01:29:59,432 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 724 transitions, 14344 flow [2024-06-28 01:29:59,432 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) [2024-06-28 01:29:59,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:59,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:59,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 01:29:59,432 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:59,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:59,433 INFO L85 PathProgramCache]: Analyzing trace with hash -437388344, now seen corresponding path program 6 times [2024-06-28 01:29:59,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:59,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173288215] [2024-06-28 01:29:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:59,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:00,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:00,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:00,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173288215] [2024-06-28 01:30:00,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173288215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:00,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:00,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:00,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673671469] [2024-06-28 01:30:00,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:00,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:00,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:00,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:00,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:00,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:30:00,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 724 transitions, 14344 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) [2024-06-28 01:30:00,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:00,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:30:00,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:02,835 INFO L124 PetriNetUnfolderBase]: 3958/7197 cut-off events. [2024-06-28 01:30:02,835 INFO L125 PetriNetUnfolderBase]: For 508836/509193 co-relation queries the response was YES. [2024-06-28 01:30:02,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67815 conditions, 7197 events. 3958/7197 cut-off events. For 508836/509193 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 55642 event pairs, 975 based on Foata normal form. 78/7126 useless extension candidates. Maximal degree in co-relation 67568. Up to 5996 conditions per place. [2024-06-28 01:30:02,997 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 644 selfloop transitions, 110 changer transitions 0/763 dead transitions. [2024-06-28 01:30:02,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 763 transitions, 16091 flow [2024-06-28 01:30:02,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:02,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 01:30:02,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-06-28 01:30:02,998 INFO L175 Difference]: Start difference. First operand has 544 places, 724 transitions, 14344 flow. Second operand 11 states and 201 transitions. [2024-06-28 01:30:02,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 763 transitions, 16091 flow [2024-06-28 01:30:06,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 763 transitions, 15849 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:06,941 INFO L231 Difference]: Finished difference. Result has 547 places, 727 transitions, 14414 flow [2024-06-28 01:30:06,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14102, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14414, PETRI_PLACES=547, PETRI_TRANSITIONS=727} [2024-06-28 01:30:06,942 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 505 predicate places. [2024-06-28 01:30:06,942 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 727 transitions, 14414 flow [2024-06-28 01:30:06,942 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) [2024-06-28 01:30:06,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:06,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:06,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 01:30:06,942 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:06,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:06,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1160116830, now seen corresponding path program 7 times [2024-06-28 01:30:06,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:06,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500931159] [2024-06-28 01:30:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:06,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:07,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:07,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500931159] [2024-06-28 01:30:07,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500931159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:07,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:07,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:07,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558004117] [2024-06-28 01:30:07,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:07,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:07,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:07,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:07,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:30:07,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 727 transitions, 14414 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) [2024-06-28 01:30:07,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:07,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:30:07,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:10,440 INFO L124 PetriNetUnfolderBase]: 3978/7263 cut-off events. [2024-06-28 01:30:10,440 INFO L125 PetriNetUnfolderBase]: For 515639/515976 co-relation queries the response was YES. [2024-06-28 01:30:10,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68246 conditions, 7263 events. 3978/7263 cut-off events. For 515639/515976 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 56372 event pairs, 985 based on Foata normal form. 70/7196 useless extension candidates. Maximal degree in co-relation 67998. Up to 6078 conditions per place. [2024-06-28 01:30:10,587 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 679 selfloop transitions, 84 changer transitions 0/772 dead transitions. [2024-06-28 01:30:10,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 772 transitions, 16344 flow [2024-06-28 01:30:10,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:10,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:10,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 01:30:10,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-06-28 01:30:10,589 INFO L175 Difference]: Start difference. First operand has 547 places, 727 transitions, 14414 flow. Second operand 11 states and 199 transitions. [2024-06-28 01:30:10,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 772 transitions, 16344 flow [2024-06-28 01:30:14,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 772 transitions, 16091 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 01:30:14,252 INFO L231 Difference]: Finished difference. Result has 550 places, 733 transitions, 14547 flow [2024-06-28 01:30:14,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14161, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14547, PETRI_PLACES=550, PETRI_TRANSITIONS=733} [2024-06-28 01:30:14,253 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 508 predicate places. [2024-06-28 01:30:14,253 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 733 transitions, 14547 flow [2024-06-28 01:30:14,253 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) [2024-06-28 01:30:14,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:14,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 01:30:14,254 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:14,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash -472237862, now seen corresponding path program 2 times [2024-06-28 01:30:14,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:14,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5047739] [2024-06-28 01:30:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:15,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5047739] [2024-06-28 01:30:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5047739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:15,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:15,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:30:15,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397983939] [2024-06-28 01:30:15,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:15,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:30:15,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:15,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:30:15,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:30:15,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:30:15,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 733 transitions, 14547 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:15,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:15,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:30:15,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:18,358 INFO L124 PetriNetUnfolderBase]: 4024/7357 cut-off events. [2024-06-28 01:30:18,358 INFO L125 PetriNetUnfolderBase]: For 521737/522119 co-relation queries the response was YES. [2024-06-28 01:30:18,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69201 conditions, 7357 events. 4024/7357 cut-off events. For 521737/522119 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 57375 event pairs, 985 based on Foata normal form. 89/7310 useless extension candidates. Maximal degree in co-relation 68951. Up to 6017 conditions per place. [2024-06-28 01:30:18,520 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 661 selfloop transitions, 126 changer transitions 0/796 dead transitions. [2024-06-28 01:30:18,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 796 transitions, 16935 flow [2024-06-28 01:30:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:30:18,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:30:18,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 221 transitions. [2024-06-28 01:30:18,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48464912280701755 [2024-06-28 01:30:18,522 INFO L175 Difference]: Start difference. First operand has 550 places, 733 transitions, 14547 flow. Second operand 12 states and 221 transitions. [2024-06-28 01:30:18,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 796 transitions, 16935 flow [2024-06-28 01:30:22,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 796 transitions, 16742 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:22,776 INFO L231 Difference]: Finished difference. Result has 558 places, 753 transitions, 15319 flow [2024-06-28 01:30:22,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14354, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15319, PETRI_PLACES=558, PETRI_TRANSITIONS=753} [2024-06-28 01:30:22,777 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 516 predicate places. [2024-06-28 01:30:22,777 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 753 transitions, 15319 flow [2024-06-28 01:30:22,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:22,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:22,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:22,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 01:30:22,777 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:22,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:22,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1159909068, now seen corresponding path program 3 times [2024-06-28 01:30:22,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:22,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378490540] [2024-06-28 01:30:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:22,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:23,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:23,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378490540] [2024-06-28 01:30:23,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378490540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:23,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:23,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:30:23,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800759521] [2024-06-28 01:30:23,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:23,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:30:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:23,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:30:23,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:30:23,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:30:23,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 753 transitions, 15319 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:23,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:23,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:30:23,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:26,844 INFO L124 PetriNetUnfolderBase]: 4051/7424 cut-off events. [2024-06-28 01:30:26,844 INFO L125 PetriNetUnfolderBase]: For 547299/547649 co-relation queries the response was YES. [2024-06-28 01:30:26,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70532 conditions, 7424 events. 4051/7424 cut-off events. For 547299/547649 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 58215 event pairs, 974 based on Foata normal form. 77/7367 useless extension candidates. Maximal degree in co-relation 70278. Up to 6054 conditions per place. [2024-06-28 01:30:26,986 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 686 selfloop transitions, 106 changer transitions 0/801 dead transitions. [2024-06-28 01:30:26,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 801 transitions, 17661 flow [2024-06-28 01:30:26,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:30:26,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:30:26,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 221 transitions. [2024-06-28 01:30:26,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48464912280701755 [2024-06-28 01:30:26,987 INFO L175 Difference]: Start difference. First operand has 558 places, 753 transitions, 15319 flow. Second operand 12 states and 221 transitions. [2024-06-28 01:30:26,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 801 transitions, 17661 flow [2024-06-28 01:30:31,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 801 transitions, 17227 flow, removed 196 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:31,283 INFO L231 Difference]: Finished difference. Result has 566 places, 757 transitions, 15356 flow [2024-06-28 01:30:31,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14885, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15356, PETRI_PLACES=566, PETRI_TRANSITIONS=757} [2024-06-28 01:30:31,284 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 524 predicate places. [2024-06-28 01:30:31,284 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 757 transitions, 15356 flow [2024-06-28 01:30:31,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:31,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:31,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:31,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 01:30:31,285 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:31,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:31,285 INFO L85 PathProgramCache]: Analyzing trace with hash 765270796, now seen corresponding path program 4 times [2024-06-28 01:30:31,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:31,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309660191] [2024-06-28 01:30:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:31,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:32,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:32,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:32,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309660191] [2024-06-28 01:30:32,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309660191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:32,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:32,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:30:32,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200872105] [2024-06-28 01:30:32,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:32,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:30:32,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:32,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:30:32,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:30:32,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:30:32,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 757 transitions, 15356 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:32,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:32,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:30:32,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:35,082 INFO L124 PetriNetUnfolderBase]: 4084/7440 cut-off events. [2024-06-28 01:30:35,082 INFO L125 PetriNetUnfolderBase]: For 568320/568688 co-relation queries the response was YES. [2024-06-28 01:30:35,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71264 conditions, 7440 events. 4084/7440 cut-off events. For 568320/568688 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 58048 event pairs, 961 based on Foata normal form. 90/7395 useless extension candidates. Maximal degree in co-relation 71008. Up to 6029 conditions per place. [2024-06-28 01:30:35,249 INFO L140 encePairwiseOnDemand]: 22/38 looper letters, 686 selfloop transitions, 113 changer transitions 0/808 dead transitions. [2024-06-28 01:30:35,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 808 transitions, 17799 flow [2024-06-28 01:30:35,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:30:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:30:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-06-28 01:30:35,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:30:35,251 INFO L175 Difference]: Start difference. First operand has 566 places, 757 transitions, 15356 flow. Second operand 12 states and 222 transitions. [2024-06-28 01:30:35,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 808 transitions, 17799 flow [2024-06-28 01:30:39,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 808 transitions, 17443 flow, removed 115 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:39,119 INFO L231 Difference]: Finished difference. Result has 571 places, 764 transitions, 15602 flow [2024-06-28 01:30:39,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15000, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15602, PETRI_PLACES=571, PETRI_TRANSITIONS=764} [2024-06-28 01:30:39,119 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 529 predicate places. [2024-06-28 01:30:39,119 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 764 transitions, 15602 flow [2024-06-28 01:30:39,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:39,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:39,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:39,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 01:30:39,120 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:39,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:39,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1382970160, now seen corresponding path program 8 times [2024-06-28 01:30:39,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:39,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103022139] [2024-06-28 01:30:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:39,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:39,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:39,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103022139] [2024-06-28 01:30:39,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103022139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:39,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:39,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:39,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256223145] [2024-06-28 01:30:39,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:39,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:39,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:39,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:39,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:39,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:30:39,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 764 transitions, 15602 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) [2024-06-28 01:30:39,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:39,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:30:39,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:42,663 INFO L124 PetriNetUnfolderBase]: 4188/7684 cut-off events. [2024-06-28 01:30:42,663 INFO L125 PetriNetUnfolderBase]: For 574269/574629 co-relation queries the response was YES. [2024-06-28 01:30:42,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72597 conditions, 7684 events. 4188/7684 cut-off events. For 574269/574629 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 60542 event pairs, 1041 based on Foata normal form. 78/7627 useless extension candidates. Maximal degree in co-relation 72338. Up to 6265 conditions per place. [2024-06-28 01:30:42,833 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 702 selfloop transitions, 105 changer transitions 0/816 dead transitions. [2024-06-28 01:30:42,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 816 transitions, 17570 flow [2024-06-28 01:30:42,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:42,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 01:30:42,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2024-06-28 01:30:42,859 INFO L175 Difference]: Start difference. First operand has 571 places, 764 transitions, 15602 flow. Second operand 11 states and 206 transitions. [2024-06-28 01:30:42,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 816 transitions, 17570 flow [2024-06-28 01:30:47,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 816 transitions, 17292 flow, removed 77 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:47,318 INFO L231 Difference]: Finished difference. Result has 575 places, 776 transitions, 15773 flow [2024-06-28 01:30:47,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15324, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15773, PETRI_PLACES=575, PETRI_TRANSITIONS=776} [2024-06-28 01:30:47,318 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 533 predicate places. [2024-06-28 01:30:47,319 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 776 transitions, 15773 flow [2024-06-28 01:30:47,319 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) [2024-06-28 01:30:47,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:47,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:47,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 01:30:47,319 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:47,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:47,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2016120116, now seen corresponding path program 9 times [2024-06-28 01:30:47,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:47,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763023480] [2024-06-28 01:30:47,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:47,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:48,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:48,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763023480] [2024-06-28 01:30:48,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763023480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:48,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:48,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:48,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889503991] [2024-06-28 01:30:48,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:48,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:48,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:48,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:48,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:48,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:30:48,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 776 transitions, 15773 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) [2024-06-28 01:30:48,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:48,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:30:48,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:51,207 INFO L124 PetriNetUnfolderBase]: 4222/7714 cut-off events. [2024-06-28 01:30:51,207 INFO L125 PetriNetUnfolderBase]: For 577981/578327 co-relation queries the response was YES. [2024-06-28 01:30:51,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73218 conditions, 7714 events. 4222/7714 cut-off events. For 577981/578327 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 60701 event pairs, 1070 based on Foata normal form. 71/7641 useless extension candidates. Maximal degree in co-relation 72956. Up to 6459 conditions per place. [2024-06-28 01:30:51,361 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 727 selfloop transitions, 84 changer transitions 0/820 dead transitions. [2024-06-28 01:30:51,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 820 transitions, 17773 flow [2024-06-28 01:30:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:51,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:51,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 01:30:51,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-06-28 01:30:51,363 INFO L175 Difference]: Start difference. First operand has 575 places, 776 transitions, 15773 flow. Second operand 11 states and 199 transitions. [2024-06-28 01:30:51,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 820 transitions, 17773 flow [2024-06-28 01:30:55,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 820 transitions, 17538 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:55,461 INFO L231 Difference]: Finished difference. Result has 579 places, 783 transitions, 15918 flow [2024-06-28 01:30:55,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15538, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15918, PETRI_PLACES=579, PETRI_TRANSITIONS=783} [2024-06-28 01:30:55,462 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 537 predicate places. [2024-06-28 01:30:55,462 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 783 transitions, 15918 flow [2024-06-28 01:30:55,462 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) [2024-06-28 01:30:55,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:55,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:55,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 01:30:55,462 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:55,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1941617838, now seen corresponding path program 5 times [2024-06-28 01:30:55,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:55,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340775882] [2024-06-28 01:30:55,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:55,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:56,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:56,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340775882] [2024-06-28 01:30:56,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340775882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:56,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:56,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:30:56,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63666401] [2024-06-28 01:30:56,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:56,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:30:56,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:56,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:30:56,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:30:56,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:30:56,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 783 transitions, 15918 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:56,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:56,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:30:56,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:59,475 INFO L124 PetriNetUnfolderBase]: 4265/7790 cut-off events. [2024-06-28 01:30:59,476 INFO L125 PetriNetUnfolderBase]: For 591674/592050 co-relation queries the response was YES. [2024-06-28 01:30:59,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74105 conditions, 7790 events. 4265/7790 cut-off events. For 591674/592050 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 61325 event pairs, 1079 based on Foata normal form. 94/7750 useless extension candidates. Maximal degree in co-relation 73841. Up to 6457 conditions per place. [2024-06-28 01:30:59,680 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 704 selfloop transitions, 117 changer transitions 0/830 dead transitions. [2024-06-28 01:30:59,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 830 transitions, 17962 flow [2024-06-28 01:30:59,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:30:59,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:30:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2024-06-28 01:30:59,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-28 01:30:59,681 INFO L175 Difference]: Start difference. First operand has 579 places, 783 transitions, 15918 flow. Second operand 12 states and 219 transitions. [2024-06-28 01:30:59,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 830 transitions, 17962 flow [2024-06-28 01:31:04,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 830 transitions, 17778 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:04,086 INFO L231 Difference]: Finished difference. Result has 584 places, 788 transitions, 16150 flow [2024-06-28 01:31:04,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15734, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16150, PETRI_PLACES=584, PETRI_TRANSITIONS=788} [2024-06-28 01:31:04,087 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 542 predicate places. [2024-06-28 01:31:04,087 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 788 transitions, 16150 flow [2024-06-28 01:31:04,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:04,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:04,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:04,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 01:31:04,088 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:04,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:04,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2015904914, now seen corresponding path program 6 times [2024-06-28 01:31:04,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:04,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502515608] [2024-06-28 01:31:04,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:04,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:05,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:05,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502515608] [2024-06-28 01:31:05,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502515608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:05,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:05,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:31:05,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185359105] [2024-06-28 01:31:05,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:05,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:31:05,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:05,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:31:05,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:31:05,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:31:05,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 788 transitions, 16150 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:05,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:05,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:31:05,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:08,312 INFO L124 PetriNetUnfolderBase]: 4341/7934 cut-off events. [2024-06-28 01:31:08,313 INFO L125 PetriNetUnfolderBase]: For 645552/645908 co-relation queries the response was YES. [2024-06-28 01:31:08,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76659 conditions, 7934 events. 4341/7934 cut-off events. For 645552/645908 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 62747 event pairs, 1059 based on Foata normal form. 79/7880 useless extension candidates. Maximal degree in co-relation 76394. Up to 6418 conditions per place. [2024-06-28 01:31:08,490 INFO L140 encePairwiseOnDemand]: 22/38 looper letters, 721 selfloop transitions, 116 changer transitions 0/846 dead transitions. [2024-06-28 01:31:08,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 846 transitions, 18885 flow [2024-06-28 01:31:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:31:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:31:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-06-28 01:31:08,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:31:08,492 INFO L175 Difference]: Start difference. First operand has 584 places, 788 transitions, 16150 flow. Second operand 12 states and 222 transitions. [2024-06-28 01:31:08,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 846 transitions, 18885 flow [2024-06-28 01:31:13,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 846 transitions, 18540 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-28 01:31:13,655 INFO L231 Difference]: Finished difference. Result has 587 places, 800 transitions, 16569 flow [2024-06-28 01:31:13,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15805, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16569, PETRI_PLACES=587, PETRI_TRANSITIONS=800} [2024-06-28 01:31:13,656 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 545 predicate places. [2024-06-28 01:31:13,656 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 800 transitions, 16569 flow [2024-06-28 01:31:13,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:13,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:13,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:13,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 01:31:13,656 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:13,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:13,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2115060318, now seen corresponding path program 7 times [2024-06-28 01:31:13,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:13,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191181991] [2024-06-28 01:31:13,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:13,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:14,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191181991] [2024-06-28 01:31:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191181991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:14,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:14,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:31:14,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581707126] [2024-06-28 01:31:14,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:14,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:31:14,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:14,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:31:14,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:31:14,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:31:14,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 800 transitions, 16569 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:14,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:14,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:31:14,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:18,147 INFO L124 PetriNetUnfolderBase]: 4339/7907 cut-off events. [2024-06-28 01:31:18,147 INFO L125 PetriNetUnfolderBase]: For 623771/624141 co-relation queries the response was YES. [2024-06-28 01:31:18,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76259 conditions, 7907 events. 4339/7907 cut-off events. For 623771/624141 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 62222 event pairs, 1056 based on Foata normal form. 90/7864 useless extension candidates. Maximal degree in co-relation 75992. Up to 6417 conditions per place. [2024-06-28 01:31:18,318 INFO L140 encePairwiseOnDemand]: 22/38 looper letters, 719 selfloop transitions, 119 changer transitions 0/847 dead transitions. [2024-06-28 01:31:18,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 847 transitions, 18942 flow [2024-06-28 01:31:18,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:31:18,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:31:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-28 01:31:18,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48903508771929827 [2024-06-28 01:31:18,320 INFO L175 Difference]: Start difference. First operand has 587 places, 800 transitions, 16569 flow. Second operand 12 states and 223 transitions. [2024-06-28 01:31:18,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 847 transitions, 18942 flow [2024-06-28 01:31:23,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 847 transitions, 18638 flow, removed 92 selfloop flow, removed 8 redundant places. [2024-06-28 01:31:23,725 INFO L231 Difference]: Finished difference. Result has 591 places, 803 transitions, 16658 flow [2024-06-28 01:31:23,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16275, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16658, PETRI_PLACES=591, PETRI_TRANSITIONS=803} [2024-06-28 01:31:23,726 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 549 predicate places. [2024-06-28 01:31:23,726 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 803 transitions, 16658 flow [2024-06-28 01:31:23,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:23,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:23,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:23,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 01:31:23,727 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:23,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:23,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1203979888, now seen corresponding path program 10 times [2024-06-28 01:31:23,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:23,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023507735] [2024-06-28 01:31:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:23,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:24,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:24,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023507735] [2024-06-28 01:31:24,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023507735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:24,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:24,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:24,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495542825] [2024-06-28 01:31:24,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:24,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:24,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:24,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:24,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:24,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:31:24,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 803 transitions, 16658 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) [2024-06-28 01:31:24,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:24,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:31:24,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:27,515 INFO L124 PetriNetUnfolderBase]: 4359/7987 cut-off events. [2024-06-28 01:31:27,515 INFO L125 PetriNetUnfolderBase]: For 630213/630536 co-relation queries the response was YES. [2024-06-28 01:31:27,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76501 conditions, 7987 events. 4359/7987 cut-off events. For 630213/630536 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 63294 event pairs, 1067 based on Foata normal form. 64/7914 useless extension candidates. Maximal degree in co-relation 76232. Up to 6580 conditions per place. [2024-06-28 01:31:27,706 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 734 selfloop transitions, 103 changer transitions 0/846 dead transitions. [2024-06-28 01:31:27,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 846 transitions, 18714 flow [2024-06-28 01:31:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:27,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 01:31:27,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-06-28 01:31:27,708 INFO L175 Difference]: Start difference. First operand has 591 places, 803 transitions, 16658 flow. Second operand 11 states and 201 transitions. [2024-06-28 01:31:27,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 846 transitions, 18714 flow [2024-06-28 01:31:32,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 846 transitions, 18403 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-28 01:31:32,123 INFO L231 Difference]: Finished difference. Result has 593 places, 807 transitions, 16723 flow [2024-06-28 01:31:32,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16347, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16723, PETRI_PLACES=593, PETRI_TRANSITIONS=807} [2024-06-28 01:31:32,124 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 551 predicate places. [2024-06-28 01:31:32,124 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 807 transitions, 16723 flow [2024-06-28 01:31:32,124 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) [2024-06-28 01:31:32,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:32,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:32,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 01:31:32,125 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:32,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:32,125 INFO L85 PathProgramCache]: Analyzing trace with hash -281442766, now seen corresponding path program 8 times [2024-06-28 01:31:32,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:32,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675862394] [2024-06-28 01:31:32,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:32,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:33,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:33,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675862394] [2024-06-28 01:31:33,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675862394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:33,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:33,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:31:33,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838176812] [2024-06-28 01:31:33,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:33,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:31:33,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:33,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:31:33,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:31:33,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:31:33,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 807 transitions, 16723 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:33,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:33,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:31:33,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:36,585 INFO L124 PetriNetUnfolderBase]: 4409/8071 cut-off events. [2024-06-28 01:31:36,586 INFO L125 PetriNetUnfolderBase]: For 683027/683362 co-relation queries the response was YES. [2024-06-28 01:31:36,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78726 conditions, 8071 events. 4409/8071 cut-off events. For 683027/683362 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 64043 event pairs, 1041 based on Foata normal form. 71/8009 useless extension candidates. Maximal degree in co-relation 78456. Up to 6497 conditions per place. [2024-06-28 01:31:36,792 INFO L140 encePairwiseOnDemand]: 22/38 looper letters, 727 selfloop transitions, 123 changer transitions 0/859 dead transitions. [2024-06-28 01:31:36,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 859 transitions, 19713 flow [2024-06-28 01:31:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:31:36,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:31:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 226 transitions. [2024-06-28 01:31:36,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956140350877193 [2024-06-28 01:31:36,793 INFO L175 Difference]: Start difference. First operand has 593 places, 807 transitions, 16723 flow. Second operand 12 states and 226 transitions. [2024-06-28 01:31:36,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 859 transitions, 19713 flow [2024-06-28 01:31:42,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 859 transitions, 19410 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 01:31:42,363 INFO L231 Difference]: Finished difference. Result has 596 places, 814 transitions, 17142 flow [2024-06-28 01:31:42,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16420, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17142, PETRI_PLACES=596, PETRI_TRANSITIONS=814} [2024-06-28 01:31:42,363 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 554 predicate places. [2024-06-28 01:31:42,363 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 814 transitions, 17142 flow [2024-06-28 01:31:42,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:42,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:42,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:42,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 01:31:42,364 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:42,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:42,365 INFO L85 PathProgramCache]: Analyzing trace with hash 335921590, now seen corresponding path program 9 times [2024-06-28 01:31:42,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:42,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564696958] [2024-06-28 01:31:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:42,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:43,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:43,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564696958] [2024-06-28 01:31:43,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564696958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:43,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:43,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:31:43,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286509964] [2024-06-28 01:31:43,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:43,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:31:43,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:43,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:31:43,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:31:43,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:31:43,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 814 transitions, 17142 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:43,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:43,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:31:43,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:46,640 INFO L124 PetriNetUnfolderBase]: 4446/8279 cut-off events. [2024-06-28 01:31:46,640 INFO L125 PetriNetUnfolderBase]: For 734733/735083 co-relation queries the response was YES. [2024-06-28 01:31:46,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80615 conditions, 8279 events. 4446/8279 cut-off events. For 734733/735083 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 66896 event pairs, 903 based on Foata normal form. 87/8247 useless extension candidates. Maximal degree in co-relation 80344. Up to 6143 conditions per place. [2024-06-28 01:31:46,822 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 694 selfloop transitions, 166 changer transitions 0/869 dead transitions. [2024-06-28 01:31:46,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 869 transitions, 20549 flow [2024-06-28 01:31:46,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:31:46,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:31:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 227 transitions. [2024-06-28 01:31:46,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49780701754385964 [2024-06-28 01:31:46,823 INFO L175 Difference]: Start difference. First operand has 596 places, 814 transitions, 17142 flow. Second operand 12 states and 227 transitions. [2024-06-28 01:31:46,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 869 transitions, 20549 flow [2024-06-28 01:31:51,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 869 transitions, 20200 flow, removed 111 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:51,673 INFO L231 Difference]: Finished difference. Result has 602 places, 823 transitions, 17781 flow [2024-06-28 01:31:51,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16815, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17781, PETRI_PLACES=602, PETRI_TRANSITIONS=823} [2024-06-28 01:31:51,674 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 560 predicate places. [2024-06-28 01:31:51,674 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 823 transitions, 17781 flow [2024-06-28 01:31:51,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:51,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:51,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:51,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 01:31:51,674 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:51,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:51,675 INFO L85 PathProgramCache]: Analyzing trace with hash 374044770, now seen corresponding path program 1 times [2024-06-28 01:31:51,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:51,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733493959] [2024-06-28 01:31:51,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:51,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:52,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:52,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733493959] [2024-06-28 01:31:52,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733493959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:52,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:52,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:52,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254010863] [2024-06-28 01:31:52,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:52,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:52,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:52,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:52,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:52,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:31:52,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 823 transitions, 17781 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:52,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:52,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:31:52,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:55,673 INFO L124 PetriNetUnfolderBase]: 4466/8156 cut-off events. [2024-06-28 01:31:55,673 INFO L125 PetriNetUnfolderBase]: For 739275/739618 co-relation queries the response was YES. [2024-06-28 01:31:55,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81218 conditions, 8156 events. 4466/8156 cut-off events. For 739275/739618 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 64644 event pairs, 1181 based on Foata normal form. 78/8092 useless extension candidates. Maximal degree in co-relation 80944. Up to 6889 conditions per place. [2024-06-28 01:31:55,879 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 798 selfloop transitions, 55 changer transitions 0/862 dead transitions. [2024-06-28 01:31:55,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 862 transitions, 19757 flow [2024-06-28 01:31:55,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:55,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:55,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-28 01:31:55,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47129186602870815 [2024-06-28 01:31:55,880 INFO L175 Difference]: Start difference. First operand has 602 places, 823 transitions, 17781 flow. Second operand 11 states and 197 transitions. [2024-06-28 01:31:55,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 862 transitions, 19757 flow [2024-06-28 01:32:01,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 862 transitions, 19444 flow, removed 96 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:01,737 INFO L231 Difference]: Finished difference. Result has 607 places, 824 transitions, 17638 flow [2024-06-28 01:32:01,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17468, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=768, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17638, PETRI_PLACES=607, PETRI_TRANSITIONS=824} [2024-06-28 01:32:01,738 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 565 predicate places. [2024-06-28 01:32:01,738 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 824 transitions, 17638 flow [2024-06-28 01:32:01,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:01,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:01,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:01,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 01:32:01,739 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:01,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:01,739 INFO L85 PathProgramCache]: Analyzing trace with hash -317184526, now seen corresponding path program 10 times [2024-06-28 01:32:01,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:01,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766396661] [2024-06-28 01:32:01,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:01,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:02,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:02,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766396661] [2024-06-28 01:32:02,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766396661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:02,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:02,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:02,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089750194] [2024-06-28 01:32:02,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:02,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:02,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:02,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:02,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:02,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:32:02,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 824 transitions, 17638 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:02,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:02,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:32:02,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:06,348 INFO L124 PetriNetUnfolderBase]: 4464/8197 cut-off events. [2024-06-28 01:32:06,348 INFO L125 PetriNetUnfolderBase]: For 712014/712343 co-relation queries the response was YES. [2024-06-28 01:32:06,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80695 conditions, 8197 events. 4464/8197 cut-off events. For 712014/712343 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 65278 event pairs, 1062 based on Foata normal form. 67/8127 useless extension candidates. Maximal degree in co-relation 80419. Up to 6645 conditions per place. [2024-06-28 01:32:06,526 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 739 selfloop transitions, 119 changer transitions 0/867 dead transitions. [2024-06-28 01:32:06,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 867 transitions, 19608 flow [2024-06-28 01:32:06,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:32:06,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:32:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 221 transitions. [2024-06-28 01:32:06,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48464912280701755 [2024-06-28 01:32:06,527 INFO L175 Difference]: Start difference. First operand has 607 places, 824 transitions, 17638 flow. Second operand 12 states and 221 transitions. [2024-06-28 01:32:06,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 867 transitions, 19608 flow [2024-06-28 01:32:12,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 867 transitions, 19413 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:12,113 INFO L231 Difference]: Finished difference. Result has 612 places, 824 transitions, 17687 flow [2024-06-28 01:32:12,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17443, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=705, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17687, PETRI_PLACES=612, PETRI_TRANSITIONS=824} [2024-06-28 01:32:12,114 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 570 predicate places. [2024-06-28 01:32:12,114 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 824 transitions, 17687 flow [2024-06-28 01:32:12,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:12,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:12,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:12,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 01:32:12,115 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:12,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:12,115 INFO L85 PathProgramCache]: Analyzing trace with hash -88397086, now seen corresponding path program 11 times [2024-06-28 01:32:12,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:12,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892575147] [2024-06-28 01:32:12,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:12,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:13,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:13,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892575147] [2024-06-28 01:32:13,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892575147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:13,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:13,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:13,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406554077] [2024-06-28 01:32:13,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:13,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:13,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:13,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:13,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:13,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:32:13,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 824 transitions, 17687 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:13,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:13,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:32:13,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:16,596 INFO L124 PetriNetUnfolderBase]: 4462/8188 cut-off events. [2024-06-28 01:32:16,596 INFO L125 PetriNetUnfolderBase]: For 701025/701415 co-relation queries the response was YES. [2024-06-28 01:32:16,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80241 conditions, 8188 events. 4462/8188 cut-off events. For 701025/701415 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 65115 event pairs, 876 based on Foata normal form. 117/8182 useless extension candidates. Maximal degree in co-relation 79964. Up to 6171 conditions per place. [2024-06-28 01:32:16,803 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 691 selfloop transitions, 168 changer transitions 0/868 dead transitions. [2024-06-28 01:32:16,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 868 transitions, 19953 flow [2024-06-28 01:32:16,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:32:16,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:32:16,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 224 transitions. [2024-06-28 01:32:16,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:32:16,804 INFO L175 Difference]: Start difference. First operand has 612 places, 824 transitions, 17687 flow. Second operand 12 states and 224 transitions. [2024-06-28 01:32:16,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 868 transitions, 19953 flow [2024-06-28 01:32:22,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 868 transitions, 19579 flow, removed 76 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:22,746 INFO L231 Difference]: Finished difference. Result has 615 places, 824 transitions, 17655 flow [2024-06-28 01:32:22,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17313, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17655, PETRI_PLACES=615, PETRI_TRANSITIONS=824} [2024-06-28 01:32:22,747 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 573 predicate places. [2024-06-28 01:32:22,747 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 824 transitions, 17655 flow [2024-06-28 01:32:22,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:22,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:22,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:22,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 01:32:22,748 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:22,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:22,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1914298804, now seen corresponding path program 12 times [2024-06-28 01:32:22,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:22,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082774211] [2024-06-28 01:32:22,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:22,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:23,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:23,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082774211] [2024-06-28 01:32:23,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082774211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:23,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:23,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:23,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392814231] [2024-06-28 01:32:23,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:23,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:23,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:23,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:23,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:23,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:32:23,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 824 transitions, 17655 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:23,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:23,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:32:23,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:27,094 INFO L124 PetriNetUnfolderBase]: 4460/8236 cut-off events. [2024-06-28 01:32:27,095 INFO L125 PetriNetUnfolderBase]: For 690988/691356 co-relation queries the response was YES. [2024-06-28 01:32:27,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80027 conditions, 8236 events. 4460/8236 cut-off events. For 690988/691356 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 66038 event pairs, 890 based on Foata normal form. 89/8201 useless extension candidates. Maximal degree in co-relation 79749. Up to 6169 conditions per place. [2024-06-28 01:32:27,307 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 678 selfloop transitions, 180 changer transitions 0/867 dead transitions. [2024-06-28 01:32:27,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 867 transitions, 19625 flow [2024-06-28 01:32:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:32:27,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:32:27,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-06-28 01:32:27,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:32:27,309 INFO L175 Difference]: Start difference. First operand has 615 places, 824 transitions, 17655 flow. Second operand 12 states and 222 transitions. [2024-06-28 01:32:27,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 867 transitions, 19625 flow [2024-06-28 01:32:34,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 867 transitions, 19200 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-28 01:32:34,248 INFO L231 Difference]: Finished difference. Result has 619 places, 824 transitions, 17596 flow [2024-06-28 01:32:34,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17230, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17596, PETRI_PLACES=619, PETRI_TRANSITIONS=824} [2024-06-28 01:32:34,248 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 577 predicate places. [2024-06-28 01:32:34,248 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 824 transitions, 17596 flow [2024-06-28 01:32:34,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:34,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:34,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:34,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 01:32:34,249 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:34,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash -303221628, now seen corresponding path program 11 times [2024-06-28 01:32:34,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:34,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469344361] [2024-06-28 01:32:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:34,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:35,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:35,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469344361] [2024-06-28 01:32:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469344361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:35,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:35,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:32:35,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618445700] [2024-06-28 01:32:35,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:35,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:32:35,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:35,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:32:35,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:32:35,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:32:35,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 824 transitions, 17596 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) [2024-06-28 01:32:35,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:35,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:32:35,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:39,042 INFO L124 PetriNetUnfolderBase]: 4564/8370 cut-off events. [2024-06-28 01:32:39,042 INFO L125 PetriNetUnfolderBase]: For 710781/711131 co-relation queries the response was YES. [2024-06-28 01:32:39,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81526 conditions, 8370 events. 4564/8370 cut-off events. For 710781/711131 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 66950 event pairs, 1080 based on Foata normal form. 75/8280 useless extension candidates. Maximal degree in co-relation 81247. Up to 6855 conditions per place. [2024-06-28 01:32:39,218 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 759 selfloop transitions, 126 changer transitions 0/894 dead transitions. [2024-06-28 01:32:39,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 894 transitions, 20176 flow [2024-06-28 01:32:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:32:39,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-28 01:32:39,219 INFO L175 Difference]: Start difference. First operand has 619 places, 824 transitions, 17596 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:32:39,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 894 transitions, 20176 flow [2024-06-28 01:32:44,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 894 transitions, 19845 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 01:32:45,014 INFO L231 Difference]: Finished difference. Result has 623 places, 856 transitions, 18306 flow [2024-06-28 01:32:45,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17265, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18306, PETRI_PLACES=623, PETRI_TRANSITIONS=856} [2024-06-28 01:32:45,015 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 581 predicate places. [2024-06-28 01:32:45,015 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 856 transitions, 18306 flow [2024-06-28 01:32:45,015 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) [2024-06-28 01:32:45,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:45,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:45,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 01:32:45,016 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:45,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:45,016 INFO L85 PathProgramCache]: Analyzing trace with hash -306108348, now seen corresponding path program 12 times [2024-06-28 01:32:45,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:45,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386448304] [2024-06-28 01:32:45,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:45,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:45,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:45,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386448304] [2024-06-28 01:32:45,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386448304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:45,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:45,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:32:45,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296235289] [2024-06-28 01:32:45,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:45,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:32:45,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:45,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:32:45,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:32:45,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:32:45,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 856 transitions, 18306 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) [2024-06-28 01:32:45,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:45,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:32:45,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:49,776 INFO L124 PetriNetUnfolderBase]: 4677/8544 cut-off events. [2024-06-28 01:32:49,777 INFO L125 PetriNetUnfolderBase]: For 728803/729188 co-relation queries the response was YES. [2024-06-28 01:32:49,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83150 conditions, 8544 events. 4677/8544 cut-off events. For 728803/729188 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 68232 event pairs, 1124 based on Foata normal form. 85/8463 useless extension candidates. Maximal degree in co-relation 82866. Up to 7096 conditions per place. [2024-06-28 01:32:49,977 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 787 selfloop transitions, 108 changer transitions 0/904 dead transitions. [2024-06-28 01:32:49,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 904 transitions, 20488 flow [2024-06-28 01:32:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 01:32:49,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-06-28 01:32:49,979 INFO L175 Difference]: Start difference. First operand has 623 places, 856 transitions, 18306 flow. Second operand 11 states and 201 transitions. [2024-06-28 01:32:49,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 904 transitions, 20488 flow [2024-06-28 01:32:55,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 904 transitions, 20284 flow, removed 98 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:55,911 INFO L231 Difference]: Finished difference. Result has 633 places, 871 transitions, 18636 flow [2024-06-28 01:32:55,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18102, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=856, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18636, PETRI_PLACES=633, PETRI_TRANSITIONS=871} [2024-06-28 01:32:55,912 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 591 predicate places. [2024-06-28 01:32:55,912 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 871 transitions, 18636 flow [2024-06-28 01:32:55,913 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) [2024-06-28 01:32:55,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:55,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:55,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 01:32:55,913 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:55,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:55,914 INFO L85 PathProgramCache]: Analyzing trace with hash -187036728, now seen corresponding path program 13 times [2024-06-28 01:32:55,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:55,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711050291] [2024-06-28 01:32:55,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:55,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:56,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:56,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711050291] [2024-06-28 01:32:56,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711050291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:56,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:56,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:32:56,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233095741] [2024-06-28 01:32:56,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:56,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:32:56,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:56,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:32:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:32:56,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:32:56,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 871 transitions, 18636 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) [2024-06-28 01:32:56,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:56,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:32:56,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:00,946 INFO L124 PetriNetUnfolderBase]: 4725/8623 cut-off events. [2024-06-28 01:33:00,946 INFO L125 PetriNetUnfolderBase]: For 732154/732521 co-relation queries the response was YES. [2024-06-28 01:33:01,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84011 conditions, 8623 events. 4725/8623 cut-off events. For 732154/732521 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 68942 event pairs, 1163 based on Foata normal form. 79/8522 useless extension candidates. Maximal degree in co-relation 83724. Up to 7244 conditions per place. [2024-06-28 01:33:01,135 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 821 selfloop transitions, 84 changer transitions 0/914 dead transitions. [2024-06-28 01:33:01,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 914 transitions, 20804 flow [2024-06-28 01:33:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:01,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:01,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 01:33:01,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-06-28 01:33:01,137 INFO L175 Difference]: Start difference. First operand has 633 places, 871 transitions, 18636 flow. Second operand 11 states and 199 transitions. [2024-06-28 01:33:01,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 914 transitions, 20804 flow [2024-06-28 01:33:07,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 636 places, 914 transitions, 20603 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:07,040 INFO L231 Difference]: Finished difference. Result has 638 places, 879 transitions, 18815 flow [2024-06-28 01:33:07,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18435, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=871, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=789, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18815, PETRI_PLACES=638, PETRI_TRANSITIONS=879} [2024-06-28 01:33:07,040 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 596 predicate places. [2024-06-28 01:33:07,040 INFO L495 AbstractCegarLoop]: Abstraction has has 638 places, 879 transitions, 18815 flow [2024-06-28 01:33:07,041 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) [2024-06-28 01:33:07,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:07,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:07,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 01:33:07,041 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:07,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:07,041 INFO L85 PathProgramCache]: Analyzing trace with hash 121095560, now seen corresponding path program 13 times [2024-06-28 01:33:07,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:07,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073809202] [2024-06-28 01:33:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:07,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:08,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:08,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073809202] [2024-06-28 01:33:08,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073809202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:08,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:08,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:08,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943016209] [2024-06-28 01:33:08,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:08,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:08,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:08,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:08,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:08,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:33:08,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 879 transitions, 18815 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:08,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:08,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:33:08,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:12,396 INFO L124 PetriNetUnfolderBase]: 4757/8706 cut-off events. [2024-06-28 01:33:12,397 INFO L125 PetriNetUnfolderBase]: For 736073/736441 co-relation queries the response was YES. [2024-06-28 01:33:12,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84646 conditions, 8706 events. 4757/8706 cut-off events. For 736073/736441 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 69891 event pairs, 1158 based on Foata normal form. 78/8621 useless extension candidates. Maximal degree in co-relation 84357. Up to 7254 conditions per place. [2024-06-28 01:33:12,576 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 799 selfloop transitions, 115 changer transitions 0/923 dead transitions. [2024-06-28 01:33:12,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 923 transitions, 21027 flow [2024-06-28 01:33:12,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:33:12,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:33:12,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-28 01:33:12,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2024-06-28 01:33:12,577 INFO L175 Difference]: Start difference. First operand has 638 places, 879 transitions, 18815 flow. Second operand 12 states and 218 transitions. [2024-06-28 01:33:12,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 923 transitions, 21027 flow [2024-06-28 01:33:18,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 923 transitions, 20798 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 01:33:18,714 INFO L231 Difference]: Finished difference. Result has 641 places, 885 transitions, 19032 flow [2024-06-28 01:33:18,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18586, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=879, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=764, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=19032, PETRI_PLACES=641, PETRI_TRANSITIONS=885} [2024-06-28 01:33:18,715 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 599 predicate places. [2024-06-28 01:33:18,715 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 885 transitions, 19032 flow [2024-06-28 01:33:18,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:18,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:18,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:18,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 01:33:18,715 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:18,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash -186821526, now seen corresponding path program 14 times [2024-06-28 01:33:18,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:18,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167176802] [2024-06-28 01:33:18,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:18,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:19,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:19,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:19,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167176802] [2024-06-28 01:33:19,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167176802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:19,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:19,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:19,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465226861] [2024-06-28 01:33:19,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:19,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:19,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:19,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:19,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:33:19,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 885 transitions, 19032 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:19,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:19,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:33:19,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:24,351 INFO L124 PetriNetUnfolderBase]: 4809/8800 cut-off events. [2024-06-28 01:33:24,351 INFO L125 PetriNetUnfolderBase]: For 762154/762536 co-relation queries the response was YES. [2024-06-28 01:33:24,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86031 conditions, 8800 events. 4809/8800 cut-off events. For 762154/762536 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 70800 event pairs, 1162 based on Foata normal form. 86/8721 useless extension candidates. Maximal degree in co-relation 85741. Up to 7245 conditions per place. [2024-06-28 01:33:24,548 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 817 selfloop transitions, 111 changer transitions 0/937 dead transitions. [2024-06-28 01:33:24,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 937 transitions, 21814 flow [2024-06-28 01:33:24,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:33:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:33:24,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 220 transitions. [2024-06-28 01:33:24,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-28 01:33:24,550 INFO L175 Difference]: Start difference. First operand has 641 places, 885 transitions, 19032 flow. Second operand 12 states and 220 transitions. [2024-06-28 01:33:24,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 937 transitions, 21814 flow [2024-06-28 01:33:31,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 937 transitions, 21479 flow, removed 75 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:31,185 INFO L231 Difference]: Finished difference. Result has 646 places, 897 transitions, 19379 flow [2024-06-28 01:33:31,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18697, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=885, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=19379, PETRI_PLACES=646, PETRI_TRANSITIONS=897} [2024-06-28 01:33:31,186 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 604 predicate places. [2024-06-28 01:33:31,186 INFO L495 AbstractCegarLoop]: Abstraction has has 646 places, 897 transitions, 19379 flow [2024-06-28 01:33:31,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:31,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:31,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:31,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 01:33:31,187 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:31,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:31,187 INFO L85 PathProgramCache]: Analyzing trace with hash -186828966, now seen corresponding path program 15 times [2024-06-28 01:33:31,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:31,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694983830] [2024-06-28 01:33:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:31,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:32,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:32,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694983830] [2024-06-28 01:33:32,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694983830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:32,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:32,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:32,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620104884] [2024-06-28 01:33:32,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:32,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:32,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:32,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:32,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:32,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:33:32,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 897 transitions, 19379 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:32,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:32,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:33:32,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:36,611 INFO L124 PetriNetUnfolderBase]: 4807/8809 cut-off events. [2024-06-28 01:33:36,612 INFO L125 PetriNetUnfolderBase]: For 752083/752465 co-relation queries the response was YES.