./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix010.oepc.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/mix010.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix010.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:57:05,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:57:05,496 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:57:05,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:57:05,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:57:05,529 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:57:05,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:57:05,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:57:05,531 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:57:05,531 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:57:05,531 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:57:05,532 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:57:05,532 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:57:05,533 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:57:05,533 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:57:05,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:57:05,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:57:05,534 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:57:05,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:57:05,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:57:05,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:57:05,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:57:05,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:57:05,535 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:57:05,536 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:57:05,536 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:57:05,536 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:57:05,536 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:57:05,537 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:57:05,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:57:05,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:57:05,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:57:05,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:57:05,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:57:05,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:57:05,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:57:05,539 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:57:05,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:57:05,539 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:57:05,539 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:57:05,539 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:57:05,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:57:05,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:57:05,540 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:57:05,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:57:05,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:57:05,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:57:05,716 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:57:05,718 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:57:05,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix010.oepc.yml/witness.yml [2024-06-28 02:57:05,922 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:57:05,922 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:57:05,923 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2024-06-28 02:57:06,929 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:57:07,139 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:57:07,140 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2024-06-28 02:57:07,153 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2788ced5d/520fc2b4ca914efb8b0bc224cdc4975a/FLAG70ca0c1ff [2024-06-28 02:57:07,163 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2788ced5d/520fc2b4ca914efb8b0bc224cdc4975a [2024-06-28 02:57:07,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:57:07,165 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:57:07,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:57:07,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:57:07,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:57:07,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:57:05" (1/2) ... [2024-06-28 02:57:07,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3d5504 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:07, skipping insertion in model container [2024-06-28 02:57:07,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:57:05" (1/2) ... [2024-06-28 02:57:07,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4084f26b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:57:07, skipping insertion in model container [2024-06-28 02:57:07,173 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:57:07" (2/2) ... [2024-06-28 02:57:07,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3d5504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07, skipping insertion in model container [2024-06-28 02:57:07,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:57:07" (2/2) ... [2024-06-28 02:57:07,173 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:57:07,256 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:57:07,257 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((! multithreaded || a$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) [2024-06-28 02:57:07,257 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((! multithreaded || a$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) [2024-06-28 02:57:07,257 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || a$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) [2024-06-28 02:57:07,257 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:57:07,257 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-28 02:57:07,294 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:57:07,585 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:57:07,592 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:57:07,687 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:57:07,723 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:57:07,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07 WrapperNode [2024-06-28 02:57:07,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:57:07,725 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:57:07,725 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:57:07,725 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:57:07,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07" (1/1) ... [2024-06-28 02:57:07,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07" (1/1) ... [2024-06-28 02:57:07,791 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 129 [2024-06-28 02:57:07,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:57:07,792 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:57:07,792 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:57:07,792 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:57:07,804 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07" (1/1) ... [2024-06-28 02:57:07,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07" (1/1) ... [2024-06-28 02:57:07,813 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07" (1/1) ... [2024-06-28 02:57:07,829 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 02:57:07,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07" (1/1) ... [2024-06-28 02:57:07,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07" (1/1) ... [2024-06-28 02:57:07,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07" (1/1) ... [2024-06-28 02:57:07,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07" (1/1) ... [2024-06-28 02:57:07,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07" (1/1) ... [2024-06-28 02:57:07,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07" (1/1) ... [2024-06-28 02:57:07,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:57:07,887 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:57:07,887 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:57:07,887 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:57:07,888 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07" (1/1) ... [2024-06-28 02:57:07,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:57:07,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:57:07,941 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 02:57:07,949 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 02:57:07,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:57:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:57:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:57:07,982 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:57:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:57:07,982 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:57:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:57:07,983 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:57:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:57:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:57:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:57:07,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:57:07,985 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 02:57:08,095 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:57:08,097 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:57:08,381 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:57:08,381 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:57:08,504 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:57:08,505 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:57:08,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:57:08 BoogieIcfgContainer [2024-06-28 02:57:08,505 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:57:08,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:57:08,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:57:08,511 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:57:08,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:57:05" (1/4) ... [2024-06-28 02:57:08,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24be017a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:57:08, skipping insertion in model container [2024-06-28 02:57:08,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:57:07" (2/4) ... [2024-06-28 02:57:08,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24be017a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:57:08, skipping insertion in model container [2024-06-28 02:57:08,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:57:07" (3/4) ... [2024-06-28 02:57:08,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24be017a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:57:08, skipping insertion in model container [2024-06-28 02:57:08,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:57:08" (4/4) ... [2024-06-28 02:57:08,514 INFO L112 eAbstractionObserver]: Analyzing ICFG mix010.oepc.i [2024-06-28 02:57:08,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:57:08,528 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 02:57:08,528 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:57:08,576 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:57:08,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 43 transitions, 98 flow [2024-06-28 02:57:08,639 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-06-28 02:57:08,639 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:57:08,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:57:08,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 43 transitions, 98 flow [2024-06-28 02:57:08,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-06-28 02:57:08,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:57:08,657 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;@35398780, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:57:08,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 02:57:08,661 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:57:08,661 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 02:57:08,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:57:08,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:08,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:57:08,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:08,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:08,667 INFO L85 PathProgramCache]: Analyzing trace with hash 382731927, now seen corresponding path program 1 times [2024-06-28 02:57:08,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:08,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615185421] [2024-06-28 02:57:08,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:08,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:09,826 INFO 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 02:57:09,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:09,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615185421] [2024-06-28 02:57:09,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615185421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:09,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:09,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:57:09,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260424927] [2024-06-28 02:57:09,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:09,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:57:09,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:09,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:57:09,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:57:09,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-28 02:57:09,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 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 02:57:09,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:09,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-28 02:57:09,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:10,288 INFO L124 PetriNetUnfolderBase]: 1359/2139 cut-off events. [2024-06-28 02:57:10,289 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 02:57:10,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4253 conditions, 2139 events. 1359/2139 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10850 event pairs, 941 based on Foata normal form. 1/2097 useless extension candidates. Maximal degree in co-relation 4241. Up to 2029 conditions per place. [2024-06-28 02:57:10,307 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 32 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 02:57:10,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 175 flow [2024-06-28 02:57:10,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:57:10,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:57:10,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-28 02:57:10,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-06-28 02:57:10,318 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 81 transitions. [2024-06-28 02:57:10,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 175 flow [2024-06-28 02:57:10,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:10,324 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 104 flow [2024-06-28 02:57:10,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 02:57:10,328 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2024-06-28 02:57:10,328 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 104 flow [2024-06-28 02:57:10,328 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 02:57:10,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:10,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:10,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:57:10,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:10,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:10,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1561535066, now seen corresponding path program 1 times [2024-06-28 02:57:10,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:10,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123947132] [2024-06-28 02:57:10,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:10,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:11,093 INFO 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 02:57:11,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:11,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123947132] [2024-06-28 02:57:11,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123947132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:11,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:11,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:57:11,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112178320] [2024-06-28 02:57:11,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:11,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:57:11,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:11,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:57:11,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:57:11,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-28 02:57:11,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:11,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:11,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-28 02:57:11,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:11,447 INFO L124 PetriNetUnfolderBase]: 1353/2136 cut-off events. [2024-06-28 02:57:11,448 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2024-06-28 02:57:11,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4792 conditions, 2136 events. 1353/2136 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10853 event pairs, 795 based on Foata normal form. 3/2132 useless extension candidates. Maximal degree in co-relation 4780. Up to 2005 conditions per place. [2024-06-28 02:57:11,456 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 39 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 02:57:11,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 242 flow [2024-06-28 02:57:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:57:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:57:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-06-28 02:57:11,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-06-28 02:57:11,458 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 104 flow. Second operand 4 states and 105 transitions. [2024-06-28 02:57:11,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 242 flow [2024-06-28 02:57:11,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:57:11,461 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 140 flow [2024-06-28 02:57:11,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-28 02:57:11,462 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2024-06-28 02:57:11,462 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 140 flow [2024-06-28 02:57:11,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:11,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:11,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:11,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:57:11,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:11,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:11,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1691570235, now seen corresponding path program 1 times [2024-06-28 02:57:11,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:11,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857132051] [2024-06-28 02:57:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:11,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:12,934 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 02:57:12,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:12,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857132051] [2024-06-28 02:57:12,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857132051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:12,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:12,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:57:12,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665079133] [2024-06-28 02:57:12,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:12,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:57:12,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:12,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:57:12,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:57:13,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 02:57:13,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:13,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:13,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 02:57:13,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:13,450 INFO L124 PetriNetUnfolderBase]: 1641/2562 cut-off events. [2024-06-28 02:57:13,451 INFO L125 PetriNetUnfolderBase]: For 1353/1353 co-relation queries the response was YES. [2024-06-28 02:57:13,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6345 conditions, 2562 events. 1641/2562 cut-off events. For 1353/1353 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12927 event pairs, 746 based on Foata normal form. 3/2555 useless extension candidates. Maximal degree in co-relation 6331. Up to 2393 conditions per place. [2024-06-28 02:57:13,463 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 54 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-28 02:57:13,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 376 flow [2024-06-28 02:57:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:57:13,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:57:13,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 02:57:13,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2024-06-28 02:57:13,466 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 140 flow. Second operand 6 states and 148 transitions. [2024-06-28 02:57:13,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 376 flow [2024-06-28 02:57:13,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 356 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 02:57:13,468 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 198 flow [2024-06-28 02:57:13,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, 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=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 02:57:13,469 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2024-06-28 02:57:13,469 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 198 flow [2024-06-28 02:57:13,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:13,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:13,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:13,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:57:13,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:13,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:13,470 INFO L85 PathProgramCache]: Analyzing trace with hash 819869989, now seen corresponding path program 1 times [2024-06-28 02:57:13,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:13,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437905892] [2024-06-28 02:57:13,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:13,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:15,008 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 02:57:15,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:15,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437905892] [2024-06-28 02:57:15,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437905892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:15,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:15,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:57:15,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931043175] [2024-06-28 02:57:15,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:15,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:57:15,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:15,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:57:15,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:57:15,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 02:57:15,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 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 02:57:15,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:15,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 02:57:15,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:15,598 INFO L124 PetriNetUnfolderBase]: 1632/2543 cut-off events. [2024-06-28 02:57:15,598 INFO L125 PetriNetUnfolderBase]: For 2668/2668 co-relation queries the response was YES. [2024-06-28 02:57:15,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7020 conditions, 2543 events. 1632/2543 cut-off events. For 2668/2668 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12833 event pairs, 582 based on Foata normal form. 6/2537 useless extension candidates. Maximal degree in co-relation 7004. Up to 2348 conditions per place. [2024-06-28 02:57:15,610 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 58 selfloop transitions, 15 changer transitions 0/80 dead transitions. [2024-06-28 02:57:15,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 80 transitions, 436 flow [2024-06-28 02:57:15,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 02:57:15,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5548172757475083 [2024-06-28 02:57:15,612 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 198 flow. Second operand 7 states and 167 transitions. [2024-06-28 02:57:15,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 80 transitions, 436 flow [2024-06-28 02:57:15,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 80 transitions, 408 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:15,615 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 219 flow [2024-06-28 02:57:15,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=219, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-28 02:57:15,615 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2024-06-28 02:57:15,616 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 219 flow [2024-06-28 02:57:15,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 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 02:57:15,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:15,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:15,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:57:15,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:15,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:15,617 INFO L85 PathProgramCache]: Analyzing trace with hash 40153126, now seen corresponding path program 1 times [2024-06-28 02:57:15,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:15,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312801892] [2024-06-28 02:57:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:15,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:16,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:16,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312801892] [2024-06-28 02:57:16,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312801892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:16,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:16,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:57:16,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059396263] [2024-06-28 02:57:16,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:16,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:57:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:16,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:57:16,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:57:16,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:16,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:16,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:16,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:16,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:16,819 INFO L124 PetriNetUnfolderBase]: 1627/2536 cut-off events. [2024-06-28 02:57:16,820 INFO L125 PetriNetUnfolderBase]: For 4003/4003 co-relation queries the response was YES. [2024-06-28 02:57:16,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7444 conditions, 2536 events. 1627/2536 cut-off events. For 4003/4003 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12762 event pairs, 689 based on Foata normal form. 2/2526 useless extension candidates. Maximal degree in co-relation 7426. Up to 2407 conditions per place. [2024-06-28 02:57:16,832 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 47 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2024-06-28 02:57:16,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 373 flow [2024-06-28 02:57:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:57:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:57:16,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-06-28 02:57:16,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697674418604651 [2024-06-28 02:57:16,835 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 219 flow. Second operand 5 states and 101 transitions. [2024-06-28 02:57:16,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 373 flow [2024-06-28 02:57:16,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 334 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:16,841 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 226 flow [2024-06-28 02:57:16,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-28 02:57:16,843 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2024-06-28 02:57:16,844 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 226 flow [2024-06-28 02:57:16,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:16,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:16,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:16,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:57:16,848 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:16,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:16,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1244748280, now seen corresponding path program 1 times [2024-06-28 02:57:16,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:16,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509054194] [2024-06-28 02:57:16,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:16,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:17,598 INFO 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 02:57:17,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:17,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509054194] [2024-06-28 02:57:17,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509054194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:17,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:17,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:57:17,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781320601] [2024-06-28 02:57:17,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:17,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:57:17,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:17,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:57:17,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:57:17,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:17,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:17,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:17,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:17,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:18,300 INFO L124 PetriNetUnfolderBase]: 1918/2984 cut-off events. [2024-06-28 02:57:18,300 INFO L125 PetriNetUnfolderBase]: For 6278/6278 co-relation queries the response was YES. [2024-06-28 02:57:18,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9217 conditions, 2984 events. 1918/2984 cut-off events. For 6278/6278 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14898 event pairs, 825 based on Foata normal form. 2/2986 useless extension candidates. Maximal degree in co-relation 9197. Up to 2819 conditions per place. [2024-06-28 02:57:18,322 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 52 selfloop transitions, 11 changer transitions 0/68 dead transitions. [2024-06-28 02:57:18,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 410 flow [2024-06-28 02:57:18,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:57:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:57:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-28 02:57:18,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 02:57:18,323 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 226 flow. Second operand 6 states and 114 transitions. [2024-06-28 02:57:18,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 410 flow [2024-06-28 02:57:18,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 388 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:18,328 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 260 flow [2024-06-28 02:57:18,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-28 02:57:18,331 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2024-06-28 02:57:18,331 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 260 flow [2024-06-28 02:57:18,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:18,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:18,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:18,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:57:18,331 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:18,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:18,332 INFO L85 PathProgramCache]: Analyzing trace with hash -34881571, now seen corresponding path program 1 times [2024-06-28 02:57:18,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:18,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061736717] [2024-06-28 02:57:18,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:18,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:19,221 INFO 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 02:57:19,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:19,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061736717] [2024-06-28 02:57:19,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061736717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:19,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:19,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:57:19,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180312813] [2024-06-28 02:57:19,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:19,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:57:19,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:19,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:57:19,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:57:19,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:19,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 260 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 02:57:19,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:19,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:19,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:19,709 INFO L124 PetriNetUnfolderBase]: 1814/2880 cut-off events. [2024-06-28 02:57:19,709 INFO L125 PetriNetUnfolderBase]: For 8574/8578 co-relation queries the response was YES. [2024-06-28 02:57:19,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9536 conditions, 2880 events. 1814/2880 cut-off events. For 8574/8578 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14820 event pairs, 746 based on Foata normal form. 6/2886 useless extension candidates. Maximal degree in co-relation 9515. Up to 2635 conditions per place. [2024-06-28 02:57:19,720 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 56 selfloop transitions, 16 changer transitions 0/79 dead transitions. [2024-06-28 02:57:19,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 522 flow [2024-06-28 02:57:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:57:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:57:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-28 02:57:19,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 02:57:19,722 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 260 flow. Second operand 6 states and 126 transitions. [2024-06-28 02:57:19,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 522 flow [2024-06-28 02:57:19,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 490 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:19,726 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 318 flow [2024-06-28 02:57:19,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-06-28 02:57:19,727 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2024-06-28 02:57:19,727 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 318 flow [2024-06-28 02:57:19,727 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 02:57:19,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:19,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:19,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:57:19,728 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:19,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:19,728 INFO L85 PathProgramCache]: Analyzing trace with hash 5889629, now seen corresponding path program 2 times [2024-06-28 02:57:19,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:19,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536747101] [2024-06-28 02:57:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:19,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:20,380 INFO 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 02:57:20,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:20,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536747101] [2024-06-28 02:57:20,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536747101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:20,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:20,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:57:20,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261687976] [2024-06-28 02:57:20,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:20,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:57:20,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:20,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:57:20,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:57:20,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:20,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 318 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 02:57:20,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:20,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:20,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:20,889 INFO L124 PetriNetUnfolderBase]: 1809/2872 cut-off events. [2024-06-28 02:57:20,889 INFO L125 PetriNetUnfolderBase]: For 11074/11074 co-relation queries the response was YES. [2024-06-28 02:57:20,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10147 conditions, 2872 events. 1809/2872 cut-off events. For 11074/11074 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14786 event pairs, 742 based on Foata normal form. 2/2874 useless extension candidates. Maximal degree in co-relation 10125. Up to 2654 conditions per place. [2024-06-28 02:57:20,901 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 56 selfloop transitions, 11 changer transitions 0/74 dead transitions. [2024-06-28 02:57:20,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 490 flow [2024-06-28 02:57:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:57:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:57:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-28 02:57:20,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-06-28 02:57:20,906 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 318 flow. Second operand 6 states and 119 transitions. [2024-06-28 02:57:20,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 490 flow [2024-06-28 02:57:20,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 452 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 02:57:20,912 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 310 flow [2024-06-28 02:57:20,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-28 02:57:20,914 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-06-28 02:57:20,914 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 310 flow [2024-06-28 02:57:20,914 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 02:57:20,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:20,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:20,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:57:20,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:20,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:20,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1151540141, now seen corresponding path program 1 times [2024-06-28 02:57:20,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:20,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834542701] [2024-06-28 02:57:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:20,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:21,638 INFO 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 02:57:21,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:21,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834542701] [2024-06-28 02:57:21,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834542701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:21,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:21,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:21,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280759074] [2024-06-28 02:57:21,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:21,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:21,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:21,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:21,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:21,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:21,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 310 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 02:57:21,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:21,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:21,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:22,343 INFO L124 PetriNetUnfolderBase]: 1914/2959 cut-off events. [2024-06-28 02:57:22,343 INFO L125 PetriNetUnfolderBase]: For 12932/12932 co-relation queries the response was YES. [2024-06-28 02:57:22,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10591 conditions, 2959 events. 1914/2959 cut-off events. For 12932/12932 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14712 event pairs, 771 based on Foata normal form. 4/2963 useless extension candidates. Maximal degree in co-relation 10567. Up to 2796 conditions per place. [2024-06-28 02:57:22,356 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 63 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2024-06-28 02:57:22,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 540 flow [2024-06-28 02:57:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 02:57:22,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43853820598006643 [2024-06-28 02:57:22,358 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 310 flow. Second operand 7 states and 132 transitions. [2024-06-28 02:57:22,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 540 flow [2024-06-28 02:57:22,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 506 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:22,368 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 344 flow [2024-06-28 02:57:22,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=344, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-06-28 02:57:22,369 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 21 predicate places. [2024-06-28 02:57:22,369 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 344 flow [2024-06-28 02:57:22,370 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 02:57:22,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:22,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:22,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:57:22,370 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:22,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:22,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1910825921, now seen corresponding path program 1 times [2024-06-28 02:57:22,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:22,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027811411] [2024-06-28 02:57:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:22,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:23,417 INFO 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 02:57:23,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:23,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027811411] [2024-06-28 02:57:23,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027811411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:23,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:23,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:23,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392849870] [2024-06-28 02:57:23,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:23,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:23,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:23,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:23,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:23,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:23,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 344 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 02:57:23,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:23,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:23,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:24,104 INFO L124 PetriNetUnfolderBase]: 1810/2859 cut-off events. [2024-06-28 02:57:24,104 INFO L125 PetriNetUnfolderBase]: For 15856/15856 co-relation queries the response was YES. [2024-06-28 02:57:24,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10885 conditions, 2859 events. 1810/2859 cut-off events. For 15856/15856 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14686 event pairs, 703 based on Foata normal form. 2/2861 useless extension candidates. Maximal degree in co-relation 10861. Up to 2635 conditions per place. [2024-06-28 02:57:24,117 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 69 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2024-06-28 02:57:24,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 90 transitions, 602 flow [2024-06-28 02:57:24,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:24,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 02:57:24,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750830564784053 [2024-06-28 02:57:24,119 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 344 flow. Second operand 7 states and 143 transitions. [2024-06-28 02:57:24,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 90 transitions, 602 flow [2024-06-28 02:57:24,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 558 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:24,125 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 370 flow [2024-06-28 02:57:24,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=370, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2024-06-28 02:57:24,126 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2024-06-28 02:57:24,126 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 370 flow [2024-06-28 02:57:24,126 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 02:57:24,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:24,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:24,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:57:24,126 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:24,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:24,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1910821271, now seen corresponding path program 2 times [2024-06-28 02:57:24,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:24,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460536328] [2024-06-28 02:57:24,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:24,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:25,063 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 02:57:25,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:25,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460536328] [2024-06-28 02:57:25,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460536328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:25,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:25,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:25,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495393262] [2024-06-28 02:57:25,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:25,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:25,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:25,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:25,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:25,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:25,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 370 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 02:57:25,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:25,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:25,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:25,580 INFO L124 PetriNetUnfolderBase]: 1821/2876 cut-off events. [2024-06-28 02:57:25,580 INFO L125 PetriNetUnfolderBase]: For 19311/19315 co-relation queries the response was YES. [2024-06-28 02:57:25,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11547 conditions, 2876 events. 1821/2876 cut-off events. For 19311/19315 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14736 event pairs, 707 based on Foata normal form. 6/2882 useless extension candidates. Maximal degree in co-relation 11522. Up to 2604 conditions per place. [2024-06-28 02:57:25,595 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 62 selfloop transitions, 26 changer transitions 0/95 dead transitions. [2024-06-28 02:57:25,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 95 transitions, 714 flow [2024-06-28 02:57:25,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:25,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:25,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-28 02:57:25,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4850498338870432 [2024-06-28 02:57:25,597 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 370 flow. Second operand 7 states and 146 transitions. [2024-06-28 02:57:25,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 95 transitions, 714 flow [2024-06-28 02:57:25,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 668 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:25,605 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 458 flow [2024-06-28 02:57:25,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=458, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-06-28 02:57:25,606 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2024-06-28 02:57:25,606 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 458 flow [2024-06-28 02:57:25,606 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 02:57:25,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:25,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:25,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:57:25,607 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:25,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:25,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1081327327, now seen corresponding path program 1 times [2024-06-28 02:57:25,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:25,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969655564] [2024-06-28 02:57:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:25,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:26,549 INFO 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 02:57:26,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:26,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969655564] [2024-06-28 02:57:26,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969655564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:26,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:26,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:26,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089348177] [2024-06-28 02:57:26,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:26,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:26,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:26,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:26,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:26,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 458 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 02:57:26,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:26,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:26,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:27,088 INFO L124 PetriNetUnfolderBase]: 1947/3037 cut-off events. [2024-06-28 02:57:27,089 INFO L125 PetriNetUnfolderBase]: For 23072/23076 co-relation queries the response was YES. [2024-06-28 02:57:27,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12680 conditions, 3037 events. 1947/3037 cut-off events. For 23072/23076 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15251 event pairs, 758 based on Foata normal form. 6/3043 useless extension candidates. Maximal degree in co-relation 12654. Up to 2804 conditions per place. [2024-06-28 02:57:27,104 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 73 selfloop transitions, 23 changer transitions 0/101 dead transitions. [2024-06-28 02:57:27,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 101 transitions, 814 flow [2024-06-28 02:57:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:27,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 02:57:27,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 02:57:27,106 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 458 flow. Second operand 7 states and 140 transitions. [2024-06-28 02:57:27,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 101 transitions, 814 flow [2024-06-28 02:57:27,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 101 transitions, 770 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:27,118 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 534 flow [2024-06-28 02:57:27,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=534, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2024-06-28 02:57:27,118 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2024-06-28 02:57:27,119 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 534 flow [2024-06-28 02:57:27,119 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 02:57:27,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:27,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:27,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:57:27,119 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:27,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:27,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1710215435, now seen corresponding path program 2 times [2024-06-28 02:57:27,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:27,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123740841] [2024-06-28 02:57:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:27,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:27,893 INFO 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 02:57:27,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:27,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123740841] [2024-06-28 02:57:27,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123740841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:27,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:27,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:27,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491541616] [2024-06-28 02:57:27,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:27,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:27,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:27,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:27,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:28,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:28,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 534 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 02:57:28,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:28,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:28,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:28,493 INFO L124 PetriNetUnfolderBase]: 1958/3051 cut-off events. [2024-06-28 02:57:28,493 INFO L125 PetriNetUnfolderBase]: For 27017/27017 co-relation queries the response was YES. [2024-06-28 02:57:28,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13417 conditions, 3051 events. 1958/3051 cut-off events. For 27017/27017 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15283 event pairs, 750 based on Foata normal form. 2/3053 useless extension candidates. Maximal degree in co-relation 13389. Up to 2869 conditions per place. [2024-06-28 02:57:28,508 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 80 selfloop transitions, 14 changer transitions 0/99 dead transitions. [2024-06-28 02:57:28,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 99 transitions, 806 flow [2024-06-28 02:57:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:28,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 02:57:28,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43521594684385384 [2024-06-28 02:57:28,510 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 534 flow. Second operand 7 states and 131 transitions. [2024-06-28 02:57:28,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 99 transitions, 806 flow [2024-06-28 02:57:28,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 768 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:28,524 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 574 flow [2024-06-28 02:57:28,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=574, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2024-06-28 02:57:28,525 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-06-28 02:57:28,525 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 574 flow [2024-06-28 02:57:28,525 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 02:57:28,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:28,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:28,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:57:28,526 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:28,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:28,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2092979777, now seen corresponding path program 3 times [2024-06-28 02:57:28,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:28,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382810424] [2024-06-28 02:57:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:28,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:29,368 INFO 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 02:57:29,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:29,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382810424] [2024-06-28 02:57:29,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382810424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:29,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:29,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:29,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027325385] [2024-06-28 02:57:29,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:29,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:29,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:29,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:29,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:29,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:29,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 574 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 02:57:29,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:29,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:29,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:29,934 INFO L124 PetriNetUnfolderBase]: 1844/2935 cut-off events. [2024-06-28 02:57:29,934 INFO L125 PetriNetUnfolderBase]: For 30193/30193 co-relation queries the response was YES. [2024-06-28 02:57:29,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13212 conditions, 2935 events. 1844/2935 cut-off events. For 30193/30193 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15134 event pairs, 697 based on Foata normal form. 2/2937 useless extension candidates. Maximal degree in co-relation 13182. Up to 2683 conditions per place. [2024-06-28 02:57:29,947 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 75 selfloop transitions, 14 changer transitions 0/99 dead transitions. [2024-06-28 02:57:29,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 99 transitions, 800 flow [2024-06-28 02:57:29,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:29,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:29,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 02:57:29,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45514950166112955 [2024-06-28 02:57:29,949 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 574 flow. Second operand 7 states and 137 transitions. [2024-06-28 02:57:29,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 99 transitions, 800 flow [2024-06-28 02:57:29,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 99 transitions, 732 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:29,965 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 542 flow [2024-06-28 02:57:29,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-06-28 02:57:29,966 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2024-06-28 02:57:29,967 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 542 flow [2024-06-28 02:57:29,967 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 02:57:29,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:29,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:29,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:57:29,967 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:29,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:29,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1337761361, now seen corresponding path program 3 times [2024-06-28 02:57:29,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:29,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724293590] [2024-06-28 02:57:29,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:29,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:30,772 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 02:57:30,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:30,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724293590] [2024-06-28 02:57:30,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724293590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:30,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:30,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:57:30,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294648928] [2024-06-28 02:57:30,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:30,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:57:30,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:30,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:57:30,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:57:30,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:30,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 542 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 02:57:30,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:30,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:30,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:31,267 INFO L124 PetriNetUnfolderBase]: 1948/3037 cut-off events. [2024-06-28 02:57:31,267 INFO L125 PetriNetUnfolderBase]: For 33301/33301 co-relation queries the response was YES. [2024-06-28 02:57:31,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13835 conditions, 3037 events. 1948/3037 cut-off events. For 33301/33301 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15231 event pairs, 750 based on Foata normal form. 2/3039 useless extension candidates. Maximal degree in co-relation 13804. Up to 2837 conditions per place. [2024-06-28 02:57:31,281 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 75 selfloop transitions, 19 changer transitions 0/99 dead transitions. [2024-06-28 02:57:31,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 99 transitions, 778 flow [2024-06-28 02:57:31,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:57:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:57:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 02:57:31,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 02:57:31,283 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 542 flow. Second operand 7 states and 133 transitions. [2024-06-28 02:57:31,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 99 transitions, 778 flow [2024-06-28 02:57:31,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 99 transitions, 718 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:31,300 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 528 flow [2024-06-28 02:57:31,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=528, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2024-06-28 02:57:31,301 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2024-06-28 02:57:31,301 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 528 flow [2024-06-28 02:57:31,301 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 02:57:31,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:31,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:31,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:57:31,301 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:31,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1358766179, now seen corresponding path program 1 times [2024-06-28 02:57:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755636597] [2024-06-28 02:57:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:31,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:31,800 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 02:57:31,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755636597] [2024-06-28 02:57:31,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755636597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:31,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:31,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:57:31,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797969620] [2024-06-28 02:57:31,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:31,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:57:31,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:31,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:57:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:57:31,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:31,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 528 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:31,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:31,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:31,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:32,321 INFO L124 PetriNetUnfolderBase]: 2285/3504 cut-off events. [2024-06-28 02:57:32,321 INFO L125 PetriNetUnfolderBase]: For 48038/48038 co-relation queries the response was YES. [2024-06-28 02:57:32,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16635 conditions, 3504 events. 2285/3504 cut-off events. For 48038/48038 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 17473 event pairs, 997 based on Foata normal form. 1/3505 useless extension candidates. Maximal degree in co-relation 16603. Up to 3360 conditions per place. [2024-06-28 02:57:32,339 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 68 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2024-06-28 02:57:32,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 91 transitions, 722 flow [2024-06-28 02:57:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:57:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:57:32,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-28 02:57:32,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325581395348837 [2024-06-28 02:57:32,341 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 528 flow. Second operand 5 states and 93 transitions. [2024-06-28 02:57:32,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 91 transitions, 722 flow [2024-06-28 02:57:32,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 91 transitions, 660 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:32,362 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 516 flow [2024-06-28 02:57:32,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=516, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2024-06-28 02:57:32,362 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2024-06-28 02:57:32,363 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 516 flow [2024-06-28 02:57:32,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:32,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:32,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:32,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:57:32,363 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:32,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:32,364 INFO L85 PathProgramCache]: Analyzing trace with hash 834777404, now seen corresponding path program 1 times [2024-06-28 02:57:32,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:32,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683925337] [2024-06-28 02:57:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:32,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:33,601 INFO 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 02:57:33,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:33,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683925337] [2024-06-28 02:57:33,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683925337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:33,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:33,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:33,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545219095] [2024-06-28 02:57:33,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:33,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:33,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:33,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:33,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:33,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:33,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 516 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 02:57:33,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:33,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:33,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:34,381 INFO L124 PetriNetUnfolderBase]: 1944/3050 cut-off events. [2024-06-28 02:57:34,382 INFO L125 PetriNetUnfolderBase]: For 47455/47455 co-relation queries the response was YES. [2024-06-28 02:57:34,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15280 conditions, 3050 events. 1944/3050 cut-off events. For 47455/47455 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15690 event pairs, 722 based on Foata normal form. 2/3052 useless extension candidates. Maximal degree in co-relation 15247. Up to 2745 conditions per place. [2024-06-28 02:57:34,398 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 91 selfloop transitions, 20 changer transitions 0/122 dead transitions. [2024-06-28 02:57:34,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 122 transitions, 868 flow [2024-06-28 02:57:34,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:34,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:34,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 02:57:34,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702842377260982 [2024-06-28 02:57:34,400 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 516 flow. Second operand 9 states and 182 transitions. [2024-06-28 02:57:34,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 122 transitions, 868 flow [2024-06-28 02:57:34,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 122 transitions, 840 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:34,418 INFO L231 Difference]: Finished difference. Result has 85 places, 86 transitions, 581 flow [2024-06-28 02:57:34,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=581, PETRI_PLACES=85, PETRI_TRANSITIONS=86} [2024-06-28 02:57:34,419 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 41 predicate places. [2024-06-28 02:57:34,419 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 581 flow [2024-06-28 02:57:34,419 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 02:57:34,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:34,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:34,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:57:34,420 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:34,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash 834867769, now seen corresponding path program 1 times [2024-06-28 02:57:34,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:34,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755219832] [2024-06-28 02:57:34,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:34,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:35,542 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 02:57:35,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:35,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755219832] [2024-06-28 02:57:35,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755219832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:35,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:35,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:35,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134737486] [2024-06-28 02:57:35,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:35,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:35,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:35,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:35,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 86 transitions, 581 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 02:57:35,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:35,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:35,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:36,315 INFO L124 PetriNetUnfolderBase]: 2066/3177 cut-off events. [2024-06-28 02:57:36,316 INFO L125 PetriNetUnfolderBase]: For 53516/53516 co-relation queries the response was YES. [2024-06-28 02:57:36,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16554 conditions, 3177 events. 2066/3177 cut-off events. For 53516/53516 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15856 event pairs, 757 based on Foata normal form. 2/3179 useless extension candidates. Maximal degree in co-relation 16520. Up to 2962 conditions per place. [2024-06-28 02:57:36,332 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 95 selfloop transitions, 17 changer transitions 0/118 dead transitions. [2024-06-28 02:57:36,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 118 transitions, 919 flow [2024-06-28 02:57:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 02:57:36,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-28 02:57:36,334 INFO L175 Difference]: Start difference. First operand has 85 places, 86 transitions, 581 flow. Second operand 8 states and 154 transitions. [2024-06-28 02:57:36,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 118 transitions, 919 flow [2024-06-28 02:57:36,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 118 transitions, 852 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:36,355 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 602 flow [2024-06-28 02:57:36,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=602, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2024-06-28 02:57:36,356 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 42 predicate places. [2024-06-28 02:57:36,356 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 602 flow [2024-06-28 02:57:36,356 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 02:57:36,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:36,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:36,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:57:36,356 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:36,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:36,357 INFO L85 PathProgramCache]: Analyzing trace with hash 838592636, now seen corresponding path program 1 times [2024-06-28 02:57:36,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:36,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509000297] [2024-06-28 02:57:36,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:36,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:37,379 INFO 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 02:57:37,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:37,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509000297] [2024-06-28 02:57:37,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509000297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:37,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:37,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:37,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654880144] [2024-06-28 02:57:37,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:37,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:37,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:37,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:37,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:37,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:37,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 602 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 02:57:37,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:37,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:37,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:37,965 INFO L124 PetriNetUnfolderBase]: 2168/3342 cut-off events. [2024-06-28 02:57:37,965 INFO L125 PetriNetUnfolderBase]: For 64555/64568 co-relation queries the response was YES. [2024-06-28 02:57:37,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18066 conditions, 3342 events. 2168/3342 cut-off events. For 64555/64568 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16866 event pairs, 1085 based on Foata normal form. 5/3332 useless extension candidates. Maximal degree in co-relation 18031. Up to 3026 conditions per place. [2024-06-28 02:57:37,982 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 96 selfloop transitions, 34 changer transitions 0/136 dead transitions. [2024-06-28 02:57:37,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 136 transitions, 1159 flow [2024-06-28 02:57:37,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:37,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:37,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 02:57:37,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392764857881137 [2024-06-28 02:57:37,985 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 602 flow. Second operand 9 states and 170 transitions. [2024-06-28 02:57:37,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 136 transitions, 1159 flow [2024-06-28 02:57:38,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 1087 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:38,016 INFO L231 Difference]: Finished difference. Result has 94 places, 109 transitions, 834 flow [2024-06-28 02:57:38,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=834, PETRI_PLACES=94, PETRI_TRANSITIONS=109} [2024-06-28 02:57:38,016 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2024-06-28 02:57:38,016 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 109 transitions, 834 flow [2024-06-28 02:57:38,016 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 02:57:38,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:38,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:38,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:57:38,017 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:38,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:38,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1447932600, now seen corresponding path program 2 times [2024-06-28 02:57:38,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:38,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909362910] [2024-06-28 02:57:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:38,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:38,758 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 02:57:38,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909362910] [2024-06-28 02:57:38,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909362910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:38,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:38,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:38,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613766438] [2024-06-28 02:57:38,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:38,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:38,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:38,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:38,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:38,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:38,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 109 transitions, 834 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 02:57:38,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:38,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:38,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:39,724 INFO L124 PetriNetUnfolderBase]: 2300/3530 cut-off events. [2024-06-28 02:57:39,724 INFO L125 PetriNetUnfolderBase]: For 75265/75296 co-relation queries the response was YES. [2024-06-28 02:57:39,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20240 conditions, 3530 events. 2300/3530 cut-off events. For 75265/75296 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17960 event pairs, 985 based on Foata normal form. 4/3508 useless extension candidates. Maximal degree in co-relation 20199. Up to 3128 conditions per place. [2024-06-28 02:57:39,745 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 108 selfloop transitions, 72 changer transitions 0/186 dead transitions. [2024-06-28 02:57:39,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 186 transitions, 1893 flow [2024-06-28 02:57:39,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:39,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:39,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 02:57:39,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2024-06-28 02:57:39,747 INFO L175 Difference]: Start difference. First operand has 94 places, 109 transitions, 834 flow. Second operand 9 states and 183 transitions. [2024-06-28 02:57:39,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 186 transitions, 1893 flow [2024-06-28 02:57:39,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 186 transitions, 1765 flow, removed 63 selfloop flow, removed 1 redundant places. [2024-06-28 02:57:39,783 INFO L231 Difference]: Finished difference. Result has 106 places, 148 transitions, 1417 flow [2024-06-28 02:57:39,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1417, PETRI_PLACES=106, PETRI_TRANSITIONS=148} [2024-06-28 02:57:39,784 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 62 predicate places. [2024-06-28 02:57:39,784 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 148 transitions, 1417 flow [2024-06-28 02:57:39,784 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 02:57:39,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:39,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:39,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:57:39,784 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:39,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:39,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1407708953, now seen corresponding path program 2 times [2024-06-28 02:57:39,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:39,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511080189] [2024-06-28 02:57:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:39,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:40,585 INFO 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 02:57:40,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:40,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511080189] [2024-06-28 02:57:40,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511080189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:40,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:40,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:40,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566631881] [2024-06-28 02:57:40,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:40,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:40,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:40,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:40,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:40,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:40,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 148 transitions, 1417 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 02:57:40,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:40,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:40,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:41,467 INFO L124 PetriNetUnfolderBase]: 2426/3714 cut-off events. [2024-06-28 02:57:41,468 INFO L125 PetriNetUnfolderBase]: For 83882/83918 co-relation queries the response was YES. [2024-06-28 02:57:41,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22375 conditions, 3714 events. 2426/3714 cut-off events. For 83882/83918 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 18882 event pairs, 937 based on Foata normal form. 4/3691 useless extension candidates. Maximal degree in co-relation 22327. Up to 3217 conditions per place. [2024-06-28 02:57:41,492 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 131 selfloop transitions, 88 changer transitions 0/225 dead transitions. [2024-06-28 02:57:41,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 225 transitions, 2529 flow [2024-06-28 02:57:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 02:57:41,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-28 02:57:41,495 INFO L175 Difference]: Start difference. First operand has 106 places, 148 transitions, 1417 flow. Second operand 9 states and 185 transitions. [2024-06-28 02:57:41,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 225 transitions, 2529 flow [2024-06-28 02:57:41,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 225 transitions, 2449 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:41,545 INFO L231 Difference]: Finished difference. Result has 114 places, 186 transitions, 1949 flow [2024-06-28 02:57:41,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1949, PETRI_PLACES=114, PETRI_TRANSITIONS=186} [2024-06-28 02:57:41,545 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 70 predicate places. [2024-06-28 02:57:41,546 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 186 transitions, 1949 flow [2024-06-28 02:57:41,546 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 02:57:41,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:41,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:41,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:57:41,546 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:41,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1407714533, now seen corresponding path program 3 times [2024-06-28 02:57:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:41,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098150621] [2024-06-28 02:57:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:41,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:42,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:42,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098150621] [2024-06-28 02:57:42,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098150621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:42,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:42,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:42,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406956684] [2024-06-28 02:57:42,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:42,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:42,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:42,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:42,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:42,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:42,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 186 transitions, 1949 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 02:57:42,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:42,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:42,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:43,231 INFO L124 PetriNetUnfolderBase]: 2421/3702 cut-off events. [2024-06-28 02:57:43,231 INFO L125 PetriNetUnfolderBase]: For 92397/92433 co-relation queries the response was YES. [2024-06-28 02:57:43,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23417 conditions, 3702 events. 2421/3702 cut-off events. For 92397/92433 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 18757 event pairs, 937 based on Foata normal form. 4/3679 useless extension candidates. Maximal degree in co-relation 23364. Up to 3212 conditions per place. [2024-06-28 02:57:43,257 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 128 selfloop transitions, 89 changer transitions 0/223 dead transitions. [2024-06-28 02:57:43,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 223 transitions, 2653 flow [2024-06-28 02:57:43,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:43,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:43,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 02:57:43,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702842377260982 [2024-06-28 02:57:43,259 INFO L175 Difference]: Start difference. First operand has 114 places, 186 transitions, 1949 flow. Second operand 9 states and 182 transitions. [2024-06-28 02:57:43,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 223 transitions, 2653 flow [2024-06-28 02:57:43,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 223 transitions, 2544 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-28 02:57:43,330 INFO L231 Difference]: Finished difference. Result has 121 places, 187 transitions, 2049 flow [2024-06-28 02:57:43,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2049, PETRI_PLACES=121, PETRI_TRANSITIONS=187} [2024-06-28 02:57:43,330 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 77 predicate places. [2024-06-28 02:57:43,331 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 187 transitions, 2049 flow [2024-06-28 02:57:43,331 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 02:57:43,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:43,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:43,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:57:43,331 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:43,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:43,332 INFO L85 PathProgramCache]: Analyzing trace with hash 188661078, now seen corresponding path program 2 times [2024-06-28 02:57:43,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:43,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908233730] [2024-06-28 02:57:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:43,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:44,322 INFO 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 02:57:44,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:44,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908233730] [2024-06-28 02:57:44,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908233730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:44,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:44,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:44,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084446319] [2024-06-28 02:57:44,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:44,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:44,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:44,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:44,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:44,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:44,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 187 transitions, 2049 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 02:57:44,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:44,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:44,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:45,306 INFO L124 PetriNetUnfolderBase]: 2306/3584 cut-off events. [2024-06-28 02:57:45,306 INFO L125 PetriNetUnfolderBase]: For 98888/98928 co-relation queries the response was YES. [2024-06-28 02:57:45,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23395 conditions, 3584 events. 2306/3584 cut-off events. For 98888/98928 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18595 event pairs, 872 based on Foata normal form. 4/3557 useless extension candidates. Maximal degree in co-relation 23340. Up to 3121 conditions per place. [2024-06-28 02:57:45,328 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 139 selfloop transitions, 63 changer transitions 0/225 dead transitions. [2024-06-28 02:57:45,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 225 transitions, 2662 flow [2024-06-28 02:57:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 02:57:45,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2024-06-28 02:57:45,330 INFO L175 Difference]: Start difference. First operand has 121 places, 187 transitions, 2049 flow. Second operand 9 states and 183 transitions. [2024-06-28 02:57:45,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 225 transitions, 2662 flow [2024-06-28 02:57:45,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 225 transitions, 2543 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:45,402 INFO L231 Difference]: Finished difference. Result has 127 places, 197 transitions, 2212 flow [2024-06-28 02:57:45,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1932, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2212, PETRI_PLACES=127, PETRI_TRANSITIONS=197} [2024-06-28 02:57:45,403 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 83 predicate places. [2024-06-28 02:57:45,403 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 197 transitions, 2212 flow [2024-06-28 02:57:45,403 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 02:57:45,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:45,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:45,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:57:45,404 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:45,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:45,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1653966517, now seen corresponding path program 4 times [2024-06-28 02:57:45,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:45,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980599202] [2024-06-28 02:57:45,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:45,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:46,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:46,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980599202] [2024-06-28 02:57:46,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980599202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:46,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:46,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:46,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635347714] [2024-06-28 02:57:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:46,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:46,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:46,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:46,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 197 transitions, 2212 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 02:57:46,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:46,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:46,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:47,119 INFO L124 PetriNetUnfolderBase]: 2476/3786 cut-off events. [2024-06-28 02:57:47,120 INFO L125 PetriNetUnfolderBase]: For 111718/111760 co-relation queries the response was YES. [2024-06-28 02:57:47,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25383 conditions, 3786 events. 2476/3786 cut-off events. For 111718/111760 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 19265 event pairs, 939 based on Foata normal form. 5/3764 useless extension candidates. Maximal degree in co-relation 25326. Up to 3276 conditions per place. [2024-06-28 02:57:47,146 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 129 selfloop transitions, 107 changer transitions 0/242 dead transitions. [2024-06-28 02:57:47,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 242 transitions, 3257 flow [2024-06-28 02:57:47,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 02:57:47,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2024-06-28 02:57:47,148 INFO L175 Difference]: Start difference. First operand has 127 places, 197 transitions, 2212 flow. Second operand 8 states and 162 transitions. [2024-06-28 02:57:47,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 242 transitions, 3257 flow [2024-06-28 02:57:47,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 242 transitions, 3087 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:47,215 INFO L231 Difference]: Finished difference. Result has 127 places, 209 transitions, 2515 flow [2024-06-28 02:57:47,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2515, PETRI_PLACES=127, PETRI_TRANSITIONS=209} [2024-06-28 02:57:47,215 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 83 predicate places. [2024-06-28 02:57:47,215 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 209 transitions, 2515 flow [2024-06-28 02:57:47,216 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 02:57:47,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:47,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:47,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:57:47,216 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:47,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1653972252, now seen corresponding path program 3 times [2024-06-28 02:57:47,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:47,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352999871] [2024-06-28 02:57:47,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:47,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:48,632 INFO 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 02:57:48,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:48,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352999871] [2024-06-28 02:57:48,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352999871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:48,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:48,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:48,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813087223] [2024-06-28 02:57:48,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:48,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:48,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:48,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:48,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:48,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:48,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 209 transitions, 2515 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 02:57:48,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:48,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:48,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:49,462 INFO L124 PetriNetUnfolderBase]: 2350/3662 cut-off events. [2024-06-28 02:57:49,462 INFO L125 PetriNetUnfolderBase]: For 120225/120271 co-relation queries the response was YES. [2024-06-28 02:57:49,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25128 conditions, 3662 events. 2350/3662 cut-off events. For 120225/120271 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 19111 event pairs, 870 based on Foata normal form. 4/3635 useless extension candidates. Maximal degree in co-relation 25073. Up to 3166 conditions per place. [2024-06-28 02:57:49,486 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 146 selfloop transitions, 66 changer transitions 0/239 dead transitions. [2024-06-28 02:57:49,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 239 transitions, 3117 flow [2024-06-28 02:57:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:49,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 02:57:49,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2024-06-28 02:57:49,488 INFO L175 Difference]: Start difference. First operand has 127 places, 209 transitions, 2515 flow. Second operand 8 states and 162 transitions. [2024-06-28 02:57:49,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 239 transitions, 3117 flow [2024-06-28 02:57:49,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 239 transitions, 2883 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 02:57:49,576 INFO L231 Difference]: Finished difference. Result has 130 places, 212 transitions, 2490 flow [2024-06-28 02:57:49,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2490, PETRI_PLACES=130, PETRI_TRANSITIONS=212} [2024-06-28 02:57:49,576 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 86 predicate places. [2024-06-28 02:57:49,576 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 212 transitions, 2490 flow [2024-06-28 02:57:49,577 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 02:57:49,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:49,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:49,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:57:49,577 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:49,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:49,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1653972097, now seen corresponding path program 5 times [2024-06-28 02:57:49,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:49,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766648269] [2024-06-28 02:57:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:49,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:50,501 INFO 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 02:57:50,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:50,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766648269] [2024-06-28 02:57:50,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766648269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:50,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:50,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:50,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502945912] [2024-06-28 02:57:50,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:50,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:50,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:50,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:50,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:50,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:50,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 212 transitions, 2490 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 02:57:50,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:50,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:50,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:51,256 INFO L124 PetriNetUnfolderBase]: 2479/3791 cut-off events. [2024-06-28 02:57:51,256 INFO L125 PetriNetUnfolderBase]: For 121742/121790 co-relation queries the response was YES. [2024-06-28 02:57:51,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25881 conditions, 3791 events. 2479/3791 cut-off events. For 121742/121790 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 19234 event pairs, 939 based on Foata normal form. 5/3769 useless extension candidates. Maximal degree in co-relation 25826. Up to 3284 conditions per place. [2024-06-28 02:57:51,287 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 135 selfloop transitions, 104 changer transitions 0/245 dead transitions. [2024-06-28 02:57:51,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 245 transitions, 3232 flow [2024-06-28 02:57:51,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:51,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-28 02:57:51,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2024-06-28 02:57:51,289 INFO L175 Difference]: Start difference. First operand has 130 places, 212 transitions, 2490 flow. Second operand 8 states and 161 transitions. [2024-06-28 02:57:51,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 245 transitions, 3232 flow [2024-06-28 02:57:51,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 245 transitions, 2997 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:51,381 INFO L231 Difference]: Finished difference. Result has 132 places, 212 transitions, 2483 flow [2024-06-28 02:57:51,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2483, PETRI_PLACES=132, PETRI_TRANSITIONS=212} [2024-06-28 02:57:51,383 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 88 predicate places. [2024-06-28 02:57:51,383 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 212 transitions, 2483 flow [2024-06-28 02:57:51,383 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 02:57:51,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:51,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:51,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:57:51,384 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:51,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash -431607238, now seen corresponding path program 3 times [2024-06-28 02:57:51,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:51,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95028318] [2024-06-28 02:57:51,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:51,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:52,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:52,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:52,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95028318] [2024-06-28 02:57:52,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95028318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:52,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:52,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:52,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983798083] [2024-06-28 02:57:52,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:52,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:52,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:52,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:52,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:52,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:52,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 212 transitions, 2483 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 02:57:52,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:52,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:52,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:52,980 INFO L124 PetriNetUnfolderBase]: 2513/3846 cut-off events. [2024-06-28 02:57:52,980 INFO L125 PetriNetUnfolderBase]: For 122719/122756 co-relation queries the response was YES. [2024-06-28 02:57:52,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26040 conditions, 3846 events. 2513/3846 cut-off events. For 122719/122756 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 19605 event pairs, 1082 based on Foata normal form. 6/3824 useless extension candidates. Maximal degree in co-relation 25984. Up to 3525 conditions per place. [2024-06-28 02:57:53,007 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 201 selfloop transitions, 45 changer transitions 0/252 dead transitions. [2024-06-28 02:57:53,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 252 transitions, 3376 flow [2024-06-28 02:57:53,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 02:57:53,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-28 02:57:53,008 INFO L175 Difference]: Start difference. First operand has 132 places, 212 transitions, 2483 flow. Second operand 8 states and 156 transitions. [2024-06-28 02:57:53,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 252 transitions, 3376 flow [2024-06-28 02:57:53,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 252 transitions, 3140 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:53,087 INFO L231 Difference]: Finished difference. Result has 133 places, 220 transitions, 2510 flow [2024-06-28 02:57:53,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2510, PETRI_PLACES=133, PETRI_TRANSITIONS=220} [2024-06-28 02:57:53,088 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 89 predicate places. [2024-06-28 02:57:53,088 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 220 transitions, 2510 flow [2024-06-28 02:57:53,088 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 02:57:53,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:53,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:53,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:57:53,089 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:53,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:53,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1471717714, now seen corresponding path program 4 times [2024-06-28 02:57:53,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:53,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651017486] [2024-06-28 02:57:53,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:53,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:53,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:53,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651017486] [2024-06-28 02:57:53,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651017486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:53,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:53,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:53,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36445352] [2024-06-28 02:57:53,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:53,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:53,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:53,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:53,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:54,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:54,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 220 transitions, 2510 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 02:57:54,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:54,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:54,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:54,727 INFO L124 PetriNetUnfolderBase]: 2549/3898 cut-off events. [2024-06-28 02:57:54,728 INFO L125 PetriNetUnfolderBase]: For 123761/123798 co-relation queries the response was YES. [2024-06-28 02:57:54,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26253 conditions, 3898 events. 2549/3898 cut-off events. For 123761/123798 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 19842 event pairs, 1092 based on Foata normal form. 6/3876 useless extension candidates. Maximal degree in co-relation 26197. Up to 3610 conditions per place. [2024-06-28 02:57:54,756 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 217 selfloop transitions, 36 changer transitions 0/259 dead transitions. [2024-06-28 02:57:54,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 259 transitions, 3412 flow [2024-06-28 02:57:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 02:57:54,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-28 02:57:54,757 INFO L175 Difference]: Start difference. First operand has 133 places, 220 transitions, 2510 flow. Second operand 8 states and 154 transitions. [2024-06-28 02:57:54,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 259 transitions, 3412 flow [2024-06-28 02:57:54,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 259 transitions, 3259 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-28 02:57:54,888 INFO L231 Difference]: Finished difference. Result has 137 places, 228 transitions, 2614 flow [2024-06-28 02:57:54,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2614, PETRI_PLACES=137, PETRI_TRANSITIONS=228} [2024-06-28 02:57:54,901 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 93 predicate places. [2024-06-28 02:57:54,901 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 228 transitions, 2614 flow [2024-06-28 02:57:54,901 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 02:57:54,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:54,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:54,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:57:54,902 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:54,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:54,903 INFO L85 PathProgramCache]: Analyzing trace with hash -457862428, now seen corresponding path program 4 times [2024-06-28 02:57:54,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:54,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194538720] [2024-06-28 02:57:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:54,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:55,928 INFO 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 02:57:55,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:55,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194538720] [2024-06-28 02:57:55,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194538720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:55,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:55,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:55,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997957807] [2024-06-28 02:57:55,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:55,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:55,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:55,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:55,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:56,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:57:56,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 228 transitions, 2614 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 02:57:56,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:56,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:57:56,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:56,705 INFO L124 PetriNetUnfolderBase]: 2428/3774 cut-off events. [2024-06-28 02:57:56,705 INFO L125 PetriNetUnfolderBase]: For 134349/134409 co-relation queries the response was YES. [2024-06-28 02:57:56,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25930 conditions, 3774 events. 2428/3774 cut-off events. For 134349/134409 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19741 event pairs, 1011 based on Foata normal form. 6/3733 useless extension candidates. Maximal degree in co-relation 25873. Up to 3417 conditions per place. [2024-06-28 02:57:56,732 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 202 selfloop transitions, 24 changer transitions 0/253 dead transitions. [2024-06-28 02:57:56,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 253 transitions, 3214 flow [2024-06-28 02:57:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:56,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:56,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 02:57:56,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-28 02:57:56,733 INFO L175 Difference]: Start difference. First operand has 137 places, 228 transitions, 2614 flow. Second operand 8 states and 155 transitions. [2024-06-28 02:57:56,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 253 transitions, 3214 flow [2024-06-28 02:57:56,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 253 transitions, 3025 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:56,832 INFO L231 Difference]: Finished difference. Result has 139 places, 231 transitions, 2546 flow [2024-06-28 02:57:56,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2546, PETRI_PLACES=139, PETRI_TRANSITIONS=231} [2024-06-28 02:57:56,834 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 95 predicate places. [2024-06-28 02:57:56,834 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 231 transitions, 2546 flow [2024-06-28 02:57:56,834 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 02:57:56,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:56,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:56,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:57:56,835 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:56,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:56,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1471717931, now seen corresponding path program 6 times [2024-06-28 02:57:56,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:56,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871384431] [2024-06-28 02:57:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:56,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:57,710 INFO 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 02:57:57,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:57,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871384431] [2024-06-28 02:57:57,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871384431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:57,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:57,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:57,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81619763] [2024-06-28 02:57:57,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:57,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:57,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:57,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:57,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:57,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:57,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 231 transitions, 2546 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 02:57:57,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:57,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:57,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:58,475 INFO L124 PetriNetUnfolderBase]: 2562/3918 cut-off events. [2024-06-28 02:57:58,475 INFO L125 PetriNetUnfolderBase]: For 139254/139297 co-relation queries the response was YES. [2024-06-28 02:57:58,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26991 conditions, 3918 events. 2562/3918 cut-off events. For 139254/139297 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19935 event pairs, 1092 based on Foata normal form. 3/3893 useless extension candidates. Maximal degree in co-relation 26933. Up to 3686 conditions per place. [2024-06-28 02:57:58,503 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 229 selfloop transitions, 24 changer transitions 0/259 dead transitions. [2024-06-28 02:57:58,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 259 transitions, 3273 flow [2024-06-28 02:57:58,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:57:58,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:57:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 02:57:58,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-28 02:57:58,505 INFO L175 Difference]: Start difference. First operand has 139 places, 231 transitions, 2546 flow. Second operand 8 states and 148 transitions. [2024-06-28 02:57:58,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 259 transitions, 3273 flow [2024-06-28 02:57:58,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 259 transitions, 3178 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:58,600 INFO L231 Difference]: Finished difference. Result has 141 places, 237 transitions, 2656 flow [2024-06-28 02:57:58,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2451, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2656, PETRI_PLACES=141, PETRI_TRANSITIONS=237} [2024-06-28 02:57:58,601 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 97 predicate places. [2024-06-28 02:57:58,601 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 237 transitions, 2656 flow [2024-06-28 02:57:58,601 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 02:57:58,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:58,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:58,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:57:58,602 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:58,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:58,602 INFO L85 PathProgramCache]: Analyzing trace with hash -457862273, now seen corresponding path program 7 times [2024-06-28 02:57:58,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:58,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868233605] [2024-06-28 02:57:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:58,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:59,552 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 02:57:59,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:59,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868233605] [2024-06-28 02:57:59,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868233605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:59,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:59,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:59,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481593291] [2024-06-28 02:57:59,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:59,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:59,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:59,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:57:59,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 237 transitions, 2656 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 02:57:59,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:59,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:57:59,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:00,278 INFO L124 PetriNetUnfolderBase]: 2580/3946 cut-off events. [2024-06-28 02:58:00,278 INFO L125 PetriNetUnfolderBase]: For 149575/149618 co-relation queries the response was YES. [2024-06-28 02:58:00,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27541 conditions, 3946 events. 2580/3946 cut-off events. For 149575/149618 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20129 event pairs, 1084 based on Foata normal form. 3/3921 useless extension candidates. Maximal degree in co-relation 27482. Up to 3642 conditions per place. [2024-06-28 02:58:00,309 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 212 selfloop transitions, 51 changer transitions 0/269 dead transitions. [2024-06-28 02:58:00,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 269 transitions, 3556 flow [2024-06-28 02:58:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 02:58:00,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44476744186046513 [2024-06-28 02:58:00,311 INFO L175 Difference]: Start difference. First operand has 141 places, 237 transitions, 2656 flow. Second operand 8 states and 153 transitions. [2024-06-28 02:58:00,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 269 transitions, 3556 flow [2024-06-28 02:58:00,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 269 transitions, 3428 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:00,421 INFO L231 Difference]: Finished difference. Result has 143 places, 243 transitions, 2787 flow [2024-06-28 02:58:00,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2787, PETRI_PLACES=143, PETRI_TRANSITIONS=243} [2024-06-28 02:58:00,421 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 99 predicate places. [2024-06-28 02:58:00,421 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 243 transitions, 2787 flow [2024-06-28 02:58:00,422 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 02:58:00,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:00,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:00,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:58:00,422 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:00,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:00,422 INFO L85 PathProgramCache]: Analyzing trace with hash -457856693, now seen corresponding path program 8 times [2024-06-28 02:58:00,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:00,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590910979] [2024-06-28 02:58:00,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:00,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:01,345 INFO 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 02:58:01,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:01,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590910979] [2024-06-28 02:58:01,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590910979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:01,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:01,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:01,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524793856] [2024-06-28 02:58:01,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:01,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:01,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:01,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:01,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:01,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:01,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 243 transitions, 2787 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 02:58:01,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:01,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:01,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:02,113 INFO L124 PetriNetUnfolderBase]: 2572/3935 cut-off events. [2024-06-28 02:58:02,113 INFO L125 PetriNetUnfolderBase]: For 157201/157244 co-relation queries the response was YES. [2024-06-28 02:58:02,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27694 conditions, 3935 events. 2572/3935 cut-off events. For 157201/157244 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20111 event pairs, 1084 based on Foata normal form. 3/3910 useless extension candidates. Maximal degree in co-relation 27634. Up to 3634 conditions per place. [2024-06-28 02:58:02,141 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 214 selfloop transitions, 49 changer transitions 0/269 dead transitions. [2024-06-28 02:58:02,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 269 transitions, 3456 flow [2024-06-28 02:58:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 02:58:02,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 02:58:02,143 INFO L175 Difference]: Start difference. First operand has 143 places, 243 transitions, 2787 flow. Second operand 8 states and 152 transitions. [2024-06-28 02:58:02,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 269 transitions, 3456 flow [2024-06-28 02:58:02,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 269 transitions, 3110 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:02,290 INFO L231 Difference]: Finished difference. Result has 144 places, 243 transitions, 2551 flow [2024-06-28 02:58:02,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2551, PETRI_PLACES=144, PETRI_TRANSITIONS=243} [2024-06-28 02:58:02,291 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 100 predicate places. [2024-06-28 02:58:02,291 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 243 transitions, 2551 flow [2024-06-28 02:58:02,291 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 02:58:02,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:02,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:02,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:58:02,292 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:02,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:02,292 INFO L85 PathProgramCache]: Analyzing trace with hash -450237916, now seen corresponding path program 5 times [2024-06-28 02:58:02,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:02,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346654756] [2024-06-28 02:58:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:02,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:02,978 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 02:58:02,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:02,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346654756] [2024-06-28 02:58:02,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346654756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:02,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:02,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:02,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587458311] [2024-06-28 02:58:02,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:02,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:02,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:02,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:02,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:03,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:03,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 243 transitions, 2551 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 02:58:03,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:03,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:03,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:03,775 INFO L124 PetriNetUnfolderBase]: 2556/3911 cut-off events. [2024-06-28 02:58:03,776 INFO L125 PetriNetUnfolderBase]: For 161990/162033 co-relation queries the response was YES. [2024-06-28 02:58:03,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27469 conditions, 3911 events. 2556/3911 cut-off events. For 161990/162033 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19929 event pairs, 1091 based on Foata normal form. 6/3889 useless extension candidates. Maximal degree in co-relation 27408. Up to 3670 conditions per place. [2024-06-28 02:58:03,807 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 239 selfloop transitions, 23 changer transitions 0/268 dead transitions. [2024-06-28 02:58:03,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 268 transitions, 3170 flow [2024-06-28 02:58:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:58:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:58:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 02:58:03,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-28 02:58:03,809 INFO L175 Difference]: Start difference. First operand has 144 places, 243 transitions, 2551 flow. Second operand 8 states and 149 transitions. [2024-06-28 02:58:03,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 268 transitions, 3170 flow [2024-06-28 02:58:03,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 268 transitions, 2927 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:03,951 INFO L231 Difference]: Finished difference. Result has 144 places, 243 transitions, 2367 flow [2024-06-28 02:58:03,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2308, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2367, PETRI_PLACES=144, PETRI_TRANSITIONS=243} [2024-06-28 02:58:03,952 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 100 predicate places. [2024-06-28 02:58:03,952 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 243 transitions, 2367 flow [2024-06-28 02:58:03,952 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 02:58:03,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:03,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:03,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:58:03,953 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:03,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash -813620679, now seen corresponding path program 1 times [2024-06-28 02:58:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:03,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576702985] [2024-06-28 02:58:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:03,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:04,572 INFO 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 02:58:04,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:04,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576702985] [2024-06-28 02:58:04,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576702985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:04,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:04,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:58:04,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041089046] [2024-06-28 02:58:04,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:04,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:58:04,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:04,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:58:04,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:58:04,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:04,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 243 transitions, 2367 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:04,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:04,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:04,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:05,358 INFO L124 PetriNetUnfolderBase]: 2760/4238 cut-off events. [2024-06-28 02:58:05,358 INFO L125 PetriNetUnfolderBase]: For 182772/182812 co-relation queries the response was YES. [2024-06-28 02:58:05,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29142 conditions, 4238 events. 2760/4238 cut-off events. For 182772/182812 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 21662 event pairs, 1347 based on Foata normal form. 10/4224 useless extension candidates. Maximal degree in co-relation 29080. Up to 3903 conditions per place. [2024-06-28 02:58:05,389 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 183 selfloop transitions, 12 changer transitions 0/256 dead transitions. [2024-06-28 02:58:05,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 256 transitions, 2811 flow [2024-06-28 02:58:05,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:58:05,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:58:05,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 02:58:05,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42248062015503873 [2024-06-28 02:58:05,390 INFO L175 Difference]: Start difference. First operand has 144 places, 243 transitions, 2367 flow. Second operand 6 states and 109 transitions. [2024-06-28 02:58:05,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 256 transitions, 2811 flow [2024-06-28 02:58:05,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 256 transitions, 2744 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:05,506 INFO L231 Difference]: Finished difference. Result has 143 places, 246 transitions, 2362 flow [2024-06-28 02:58:05,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2300, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2362, PETRI_PLACES=143, PETRI_TRANSITIONS=246} [2024-06-28 02:58:05,506 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 99 predicate places. [2024-06-28 02:58:05,506 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 246 transitions, 2362 flow [2024-06-28 02:58:05,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:05,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:05,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:05,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:58:05,507 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:05,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:05,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1170859258, now seen corresponding path program 1 times [2024-06-28 02:58:05,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:05,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402879965] [2024-06-28 02:58:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:05,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:06,224 INFO 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 02:58:06,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:06,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402879965] [2024-06-28 02:58:06,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402879965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:06,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:06,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:06,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742078520] [2024-06-28 02:58:06,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:06,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:06,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:06,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:06,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:06,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:06,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 246 transitions, 2362 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 02:58:06,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:06,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:06,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:07,231 INFO L124 PetriNetUnfolderBase]: 2586/3971 cut-off events. [2024-06-28 02:58:07,231 INFO L125 PetriNetUnfolderBase]: For 202574/202692 co-relation queries the response was YES. [2024-06-28 02:58:07,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29484 conditions, 3971 events. 2586/3971 cut-off events. For 202574/202692 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 20716 event pairs, 753 based on Foata normal form. 8/3914 useless extension candidates. Maximal degree in co-relation 29421. Up to 3465 conditions per place. [2024-06-28 02:58:07,260 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 225 selfloop transitions, 43 changer transitions 0/299 dead transitions. [2024-06-28 02:58:07,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 299 transitions, 3425 flow [2024-06-28 02:58:07,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-28 02:58:07,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-28 02:58:07,262 INFO L175 Difference]: Start difference. First operand has 143 places, 246 transitions, 2362 flow. Second operand 10 states and 205 transitions. [2024-06-28 02:58:07,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 299 transitions, 3425 flow [2024-06-28 02:58:07,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 299 transitions, 3385 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:07,386 INFO L231 Difference]: Finished difference. Result has 151 places, 256 transitions, 2622 flow [2024-06-28 02:58:07,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2622, PETRI_PLACES=151, PETRI_TRANSITIONS=256} [2024-06-28 02:58:07,387 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 107 predicate places. [2024-06-28 02:58:07,387 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 256 transitions, 2622 flow [2024-06-28 02:58:07,387 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 02:58:07,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:07,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:07,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:58:07,388 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:07,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1833885258, now seen corresponding path program 1 times [2024-06-28 02:58:07,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:07,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778620513] [2024-06-28 02:58:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:07,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:08,266 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 02:58:08,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:08,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778620513] [2024-06-28 02:58:08,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778620513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:08,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:08,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:08,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662676536] [2024-06-28 02:58:08,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:08,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:08,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:08,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:08,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:08,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:08,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 256 transitions, 2622 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 02:58:08,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:08,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:08,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:09,363 INFO L124 PetriNetUnfolderBase]: 2704/4146 cut-off events. [2024-06-28 02:58:09,364 INFO L125 PetriNetUnfolderBase]: For 201191/201223 co-relation queries the response was YES. [2024-06-28 02:58:09,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30683 conditions, 4146 events. 2704/4146 cut-off events. For 201191/201223 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 21438 event pairs, 910 based on Foata normal form. 4/4120 useless extension candidates. Maximal degree in co-relation 30617. Up to 3331 conditions per place. [2024-06-28 02:58:09,396 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 173 selfloop transitions, 130 changer transitions 0/309 dead transitions. [2024-06-28 02:58:09,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 309 transitions, 3934 flow [2024-06-28 02:58:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2024-06-28 02:58:09,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48372093023255813 [2024-06-28 02:58:09,399 INFO L175 Difference]: Start difference. First operand has 151 places, 256 transitions, 2622 flow. Second operand 10 states and 208 transitions. [2024-06-28 02:58:09,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 309 transitions, 3934 flow [2024-06-28 02:58:09,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 309 transitions, 3804 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:09,551 INFO L231 Difference]: Finished difference. Result has 157 places, 269 transitions, 3064 flow [2024-06-28 02:58:09,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2492, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3064, PETRI_PLACES=157, PETRI_TRANSITIONS=269} [2024-06-28 02:58:09,551 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 113 predicate places. [2024-06-28 02:58:09,551 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 269 transitions, 3064 flow [2024-06-28 02:58:09,552 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 02:58:09,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:09,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:09,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:58:09,552 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:09,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:09,552 INFO L85 PathProgramCache]: Analyzing trace with hash -543321926, now seen corresponding path program 2 times [2024-06-28 02:58:09,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:09,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909734910] [2024-06-28 02:58:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:09,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:10,280 INFO 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 02:58:10,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:10,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909734910] [2024-06-28 02:58:10,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909734910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:10,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:10,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:10,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794083541] [2024-06-28 02:58:10,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:10,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:10,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:10,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:10,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:10,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:10,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 269 transitions, 3064 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 02:58:10,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:10,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:10,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:11,322 INFO L124 PetriNetUnfolderBase]: 2737/4260 cut-off events. [2024-06-28 02:58:11,322 INFO L125 PetriNetUnfolderBase]: For 224858/224919 co-relation queries the response was YES. [2024-06-28 02:58:11,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33033 conditions, 4260 events. 2737/4260 cut-off events. For 224858/224919 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 22924 event pairs, 899 based on Foata normal form. 12/4237 useless extension candidates. Maximal degree in co-relation 32964. Up to 3676 conditions per place. [2024-06-28 02:58:11,354 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 249 selfloop transitions, 62 changer transitions 0/342 dead transitions. [2024-06-28 02:58:11,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 342 transitions, 4358 flow [2024-06-28 02:58:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:11,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-28 02:58:11,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47357293868921774 [2024-06-28 02:58:11,357 INFO L175 Difference]: Start difference. First operand has 157 places, 269 transitions, 3064 flow. Second operand 11 states and 224 transitions. [2024-06-28 02:58:11,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 342 transitions, 4358 flow [2024-06-28 02:58:11,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 342 transitions, 4238 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:11,537 INFO L231 Difference]: Finished difference. Result has 167 places, 297 transitions, 3497 flow [2024-06-28 02:58:11,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2949, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3497, PETRI_PLACES=167, PETRI_TRANSITIONS=297} [2024-06-28 02:58:11,538 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 123 predicate places. [2024-06-28 02:58:11,538 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 297 transitions, 3497 flow [2024-06-28 02:58:11,538 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 02:58:11,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:11,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:11,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:58:11,539 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:11,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:11,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1833891768, now seen corresponding path program 2 times [2024-06-28 02:58:11,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:11,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061999202] [2024-06-28 02:58:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:11,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:12,355 INFO 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 02:58:12,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:12,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061999202] [2024-06-28 02:58:12,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061999202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:12,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:12,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:12,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879684502] [2024-06-28 02:58:12,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:12,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:12,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:12,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:12,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:12,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 297 transitions, 3497 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 02:58:12,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:12,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:12,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:13,638 INFO L124 PetriNetUnfolderBase]: 2854/4400 cut-off events. [2024-06-28 02:58:13,638 INFO L125 PetriNetUnfolderBase]: For 222704/222722 co-relation queries the response was YES. [2024-06-28 02:58:13,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34015 conditions, 4400 events. 2854/4400 cut-off events. For 222704/222722 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 23250 event pairs, 927 based on Foata normal form. 6/4388 useless extension candidates. Maximal degree in co-relation 33941. Up to 3529 conditions per place. [2024-06-28 02:58:13,669 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 200 selfloop transitions, 137 changer transitions 0/343 dead transitions. [2024-06-28 02:58:13,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 343 transitions, 4779 flow [2024-06-28 02:58:13,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2024-06-28 02:58:13,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 02:58:13,672 INFO L175 Difference]: Start difference. First operand has 167 places, 297 transitions, 3497 flow. Second operand 10 states and 210 transitions. [2024-06-28 02:58:13,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 343 transitions, 4779 flow [2024-06-28 02:58:13,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 343 transitions, 4657 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 02:58:13,846 INFO L231 Difference]: Finished difference. Result has 173 places, 300 transitions, 3717 flow [2024-06-28 02:58:13,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3383, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3717, PETRI_PLACES=173, PETRI_TRANSITIONS=300} [2024-06-28 02:58:13,846 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 129 predicate places. [2024-06-28 02:58:13,846 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 300 transitions, 3717 flow [2024-06-28 02:58:13,846 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 02:58:13,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:13,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:13,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:58:13,847 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:13,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:13,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1703559612, now seen corresponding path program 1 times [2024-06-28 02:58:13,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:13,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704282800] [2024-06-28 02:58:13,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:13,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:14,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:14,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704282800] [2024-06-28 02:58:14,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704282800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:14,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:14,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:14,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858623223] [2024-06-28 02:58:14,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:14,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:14,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:14,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:14,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:14,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:14,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 300 transitions, 3717 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:14,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:14,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:14,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:15,648 INFO L124 PetriNetUnfolderBase]: 2933/4503 cut-off events. [2024-06-28 02:58:15,648 INFO L125 PetriNetUnfolderBase]: For 244732/244749 co-relation queries the response was YES. [2024-06-28 02:58:15,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35666 conditions, 4503 events. 2933/4503 cut-off events. For 244732/244749 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 23856 event pairs, 939 based on Foata normal form. 4/4483 useless extension candidates. Maximal degree in co-relation 35591. Up to 4045 conditions per place. [2024-06-28 02:58:15,681 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 290 selfloop transitions, 68 changer transitions 0/364 dead transitions. [2024-06-28 02:58:15,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 364 transitions, 5180 flow [2024-06-28 02:58:15,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:15,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-28 02:58:15,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 02:58:15,683 INFO L175 Difference]: Start difference. First operand has 173 places, 300 transitions, 3717 flow. Second operand 11 states and 215 transitions. [2024-06-28 02:58:15,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 364 transitions, 5180 flow [2024-06-28 02:58:15,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 364 transitions, 4859 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:15,907 INFO L231 Difference]: Finished difference. Result has 179 places, 320 transitions, 3904 flow [2024-06-28 02:58:15,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3425, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3904, PETRI_PLACES=179, PETRI_TRANSITIONS=320} [2024-06-28 02:58:15,909 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 135 predicate places. [2024-06-28 02:58:15,909 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 320 transitions, 3904 flow [2024-06-28 02:58:15,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:15,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:15,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:15,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:58:15,909 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:15,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:15,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1703520676, now seen corresponding path program 3 times [2024-06-28 02:58:15,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:15,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318098548] [2024-06-28 02:58:15,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:15,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:16,619 INFO 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 02:58:16,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:16,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318098548] [2024-06-28 02:58:16,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318098548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:16,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:16,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:16,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984303839] [2024-06-28 02:58:16,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:16,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:16,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:16,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:16,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 320 transitions, 3904 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 02:58:16,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:16,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:16,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:17,672 INFO L124 PetriNetUnfolderBase]: 2814/4393 cut-off events. [2024-06-28 02:58:17,672 INFO L125 PetriNetUnfolderBase]: For 261965/262014 co-relation queries the response was YES. [2024-06-28 02:58:17,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35181 conditions, 4393 events. 2814/4393 cut-off events. For 261965/262014 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 23847 event pairs, 901 based on Foata normal form. 8/4373 useless extension candidates. Maximal degree in co-relation 35103. Up to 3848 conditions per place. [2024-06-28 02:58:17,711 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 269 selfloop transitions, 57 changer transitions 0/362 dead transitions. [2024-06-28 02:58:17,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 362 transitions, 4807 flow [2024-06-28 02:58:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 02:58:17,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-28 02:58:17,712 INFO L175 Difference]: Start difference. First operand has 179 places, 320 transitions, 3904 flow. Second operand 11 states and 219 transitions. [2024-06-28 02:58:17,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 362 transitions, 4807 flow [2024-06-28 02:58:17,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 362 transitions, 4686 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:17,946 INFO L231 Difference]: Finished difference. Result has 185 places, 322 transitions, 3970 flow [2024-06-28 02:58:17,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3791, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3970, PETRI_PLACES=185, PETRI_TRANSITIONS=322} [2024-06-28 02:58:17,955 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 141 predicate places. [2024-06-28 02:58:17,955 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 322 transitions, 3970 flow [2024-06-28 02:58:17,955 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 02:58:17,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:17,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:17,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:58:17,956 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:17,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:17,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1085129574, now seen corresponding path program 3 times [2024-06-28 02:58:17,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:17,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818504370] [2024-06-28 02:58:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:17,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:18,741 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 02:58:18,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:18,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818504370] [2024-06-28 02:58:18,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818504370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:18,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:18,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:18,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117624966] [2024-06-28 02:58:18,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:18,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:18,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:18,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:18,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:18,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:18,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 322 transitions, 3970 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 02:58:18,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:18,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:18,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:19,727 INFO L124 PetriNetUnfolderBase]: 2952/4554 cut-off events. [2024-06-28 02:58:19,728 INFO L125 PetriNetUnfolderBase]: For 255062/255071 co-relation queries the response was YES. [2024-06-28 02:58:19,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36126 conditions, 4554 events. 2952/4554 cut-off events. For 255062/255071 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 24227 event pairs, 917 based on Foata normal form. 6/4549 useless extension candidates. Maximal degree in co-relation 36046. Up to 4199 conditions per place. [2024-06-28 02:58:19,772 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 317 selfloop transitions, 46 changer transitions 0/369 dead transitions. [2024-06-28 02:58:19,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 369 transitions, 5048 flow [2024-06-28 02:58:19,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:19,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 02:58:19,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 02:58:19,774 INFO L175 Difference]: Start difference. First operand has 185 places, 322 transitions, 3970 flow. Second operand 10 states and 190 transitions. [2024-06-28 02:58:19,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 369 transitions, 5048 flow [2024-06-28 02:58:19,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 369 transitions, 4831 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-28 02:58:19,992 INFO L231 Difference]: Finished difference. Result has 188 places, 335 transitions, 4107 flow [2024-06-28 02:58:19,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3771, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4107, PETRI_PLACES=188, PETRI_TRANSITIONS=335} [2024-06-28 02:58:19,993 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 144 predicate places. [2024-06-28 02:58:19,993 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 335 transitions, 4107 flow [2024-06-28 02:58:19,993 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 02:58:19,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:19,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:19,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:58:19,993 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:19,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:19,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1942876222, now seen corresponding path program 4 times [2024-06-28 02:58:19,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:19,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043343996] [2024-06-28 02:58:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:19,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:20,754 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 02:58:20,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:20,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043343996] [2024-06-28 02:58:20,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043343996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:20,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:20,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:20,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342172193] [2024-06-28 02:58:20,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:20,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:20,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:20,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:20,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:20,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:20,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 335 transitions, 4107 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 02:58:20,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:20,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:20,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:21,990 INFO L124 PetriNetUnfolderBase]: 3047/4699 cut-off events. [2024-06-28 02:58:21,990 INFO L125 PetriNetUnfolderBase]: For 281208/281222 co-relation queries the response was YES. [2024-06-28 02:58:22,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37777 conditions, 4699 events. 3047/4699 cut-off events. For 281208/281222 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 25192 event pairs, 939 based on Foata normal form. 6/4688 useless extension candidates. Maximal degree in co-relation 37694. Up to 4245 conditions per place. [2024-06-28 02:58:22,031 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 318 selfloop transitions, 83 changer transitions 0/407 dead transitions. [2024-06-28 02:58:22,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 407 transitions, 5811 flow [2024-06-28 02:58:22,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:58:22,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:58:22,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 230 transitions. [2024-06-28 02:58:22,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44573643410852715 [2024-06-28 02:58:22,033 INFO L175 Difference]: Start difference. First operand has 188 places, 335 transitions, 4107 flow. Second operand 12 states and 230 transitions. [2024-06-28 02:58:22,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 407 transitions, 5811 flow [2024-06-28 02:58:22,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 407 transitions, 5604 flow, removed 79 selfloop flow, removed 3 redundant places. [2024-06-28 02:58:22,308 INFO L231 Difference]: Finished difference. Result has 200 places, 363 transitions, 4665 flow [2024-06-28 02:58:22,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4027, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4665, PETRI_PLACES=200, PETRI_TRANSITIONS=363} [2024-06-28 02:58:22,309 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 156 predicate places. [2024-06-28 02:58:22,309 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 363 transitions, 4665 flow [2024-06-28 02:58:22,314 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 02:58:22,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:22,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:22,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:58:22,315 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:22,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:22,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1435379242, now seen corresponding path program 4 times [2024-06-28 02:58:22,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:22,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284002438] [2024-06-28 02:58:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:22,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:23,525 INFO 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 02:58:23,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:23,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284002438] [2024-06-28 02:58:23,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284002438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:23,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:23,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:23,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378431004] [2024-06-28 02:58:23,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:23,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:23,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:23,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:23,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:23,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:23,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 363 transitions, 4665 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 02:58:23,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:23,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:23,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:24,812 INFO L124 PetriNetUnfolderBase]: 3100/4863 cut-off events. [2024-06-28 02:58:24,812 INFO L125 PetriNetUnfolderBase]: For 296146/296165 co-relation queries the response was YES. [2024-06-28 02:58:24,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39585 conditions, 4863 events. 3100/4863 cut-off events. For 296146/296165 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 27055 event pairs, 891 based on Foata normal form. 18/4867 useless extension candidates. Maximal degree in co-relation 39498. Up to 4184 conditions per place. [2024-06-28 02:58:24,854 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 331 selfloop transitions, 74 changer transitions 0/442 dead transitions. [2024-06-28 02:58:24,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 442 transitions, 6302 flow [2024-06-28 02:58:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-28 02:58:24,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693446088794926 [2024-06-28 02:58:24,856 INFO L175 Difference]: Start difference. First operand has 200 places, 363 transitions, 4665 flow. Second operand 11 states and 222 transitions. [2024-06-28 02:58:24,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 442 transitions, 6302 flow [2024-06-28 02:58:25,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 442 transitions, 6062 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:25,181 INFO L231 Difference]: Finished difference. Result has 205 places, 398 transitions, 5177 flow [2024-06-28 02:58:25,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4425, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5177, PETRI_PLACES=205, PETRI_TRANSITIONS=398} [2024-06-28 02:58:25,183 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 161 predicate places. [2024-06-28 02:58:25,183 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 398 transitions, 5177 flow [2024-06-28 02:58:25,183 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 02:58:25,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:25,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:25,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:58:25,183 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:25,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:25,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1435439816, now seen corresponding path program 2 times [2024-06-28 02:58:25,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:25,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356412990] [2024-06-28 02:58:25,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:25,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:26,174 INFO 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 02:58:26,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:26,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356412990] [2024-06-28 02:58:26,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356412990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:26,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:26,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:26,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25529752] [2024-06-28 02:58:26,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:26,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:26,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:26,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:26,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:26,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:26,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 398 transitions, 5177 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 02:58:26,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:26,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:26,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:27,420 INFO L124 PetriNetUnfolderBase]: 3267/5048 cut-off events. [2024-06-28 02:58:27,421 INFO L125 PetriNetUnfolderBase]: For 309160/309169 co-relation queries the response was YES. [2024-06-28 02:58:27,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41428 conditions, 5048 events. 3267/5048 cut-off events. For 309160/309169 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 27538 event pairs, 958 based on Foata normal form. 5/5041 useless extension candidates. Maximal degree in co-relation 41338. Up to 4621 conditions per place. [2024-06-28 02:58:27,471 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 370 selfloop transitions, 72 changer transitions 0/448 dead transitions. [2024-06-28 02:58:27,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 448 transitions, 6391 flow [2024-06-28 02:58:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:58:27,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:58:27,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 224 transitions. [2024-06-28 02:58:27,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43410852713178294 [2024-06-28 02:58:27,473 INFO L175 Difference]: Start difference. First operand has 205 places, 398 transitions, 5177 flow. Second operand 12 states and 224 transitions. [2024-06-28 02:58:27,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 448 transitions, 6391 flow [2024-06-28 02:58:27,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 448 transitions, 6269 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 02:58:27,938 INFO L231 Difference]: Finished difference. Result has 212 places, 409 transitions, 5416 flow [2024-06-28 02:58:27,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5055, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5416, PETRI_PLACES=212, PETRI_TRANSITIONS=409} [2024-06-28 02:58:27,939 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 168 predicate places. [2024-06-28 02:58:27,939 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 409 transitions, 5416 flow [2024-06-28 02:58:27,939 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 02:58:27,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:27,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:27,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:58:27,940 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:27,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:27,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1435439692, now seen corresponding path program 5 times [2024-06-28 02:58:27,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:27,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996174908] [2024-06-28 02:58:27,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:27,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:29,204 INFO 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 02:58:29,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:29,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996174908] [2024-06-28 02:58:29,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996174908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:29,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:29,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:29,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123316172] [2024-06-28 02:58:29,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:29,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:29,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:29,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:29,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:29,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 409 transitions, 5416 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 02:58:29,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:29,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:29,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:30,667 INFO L124 PetriNetUnfolderBase]: 3103/4871 cut-off events. [2024-06-28 02:58:30,667 INFO L125 PetriNetUnfolderBase]: For 319121/319140 co-relation queries the response was YES. [2024-06-28 02:58:30,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40330 conditions, 4871 events. 3103/4871 cut-off events. For 319121/319140 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 27138 event pairs, 909 based on Foata normal form. 20/4877 useless extension candidates. Maximal degree in co-relation 40237. Up to 4290 conditions per place. [2024-06-28 02:58:30,720 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 344 selfloop transitions, 62 changer transitions 0/446 dead transitions. [2024-06-28 02:58:30,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 446 transitions, 6377 flow [2024-06-28 02:58:30,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-28 02:58:30,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4587737843551797 [2024-06-28 02:58:30,723 INFO L175 Difference]: Start difference. First operand has 212 places, 409 transitions, 5416 flow. Second operand 11 states and 217 transitions. [2024-06-28 02:58:30,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 446 transitions, 6377 flow [2024-06-28 02:58:31,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 446 transitions, 6044 flow, removed 104 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:31,126 INFO L231 Difference]: Finished difference. Result has 214 places, 409 transitions, 5222 flow [2024-06-28 02:58:31,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5083, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5222, PETRI_PLACES=214, PETRI_TRANSITIONS=409} [2024-06-28 02:58:31,127 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 170 predicate places. [2024-06-28 02:58:31,127 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 409 transitions, 5222 flow [2024-06-28 02:58:31,127 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 02:58:31,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:31,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:31,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:58:31,127 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:31,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:31,128 INFO L85 PathProgramCache]: Analyzing trace with hash 689301028, now seen corresponding path program 6 times [2024-06-28 02:58:31,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:31,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817956412] [2024-06-28 02:58:31,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:31,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:32,169 INFO 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 02:58:32,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:32,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817956412] [2024-06-28 02:58:32,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817956412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:32,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:32,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:32,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913443267] [2024-06-28 02:58:32,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:32,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:32,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:32,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:32,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:32,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:32,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 409 transitions, 5222 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 02:58:32,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:32,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:32,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:33,483 INFO L124 PetriNetUnfolderBase]: 3132/4910 cut-off events. [2024-06-28 02:58:33,483 INFO L125 PetriNetUnfolderBase]: For 327753/327765 co-relation queries the response was YES. [2024-06-28 02:58:33,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40649 conditions, 4910 events. 3132/4910 cut-off events. For 327753/327765 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 27276 event pairs, 921 based on Foata normal form. 10/4909 useless extension candidates. Maximal degree in co-relation 40555. Up to 4269 conditions per place. [2024-06-28 02:58:33,530 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 321 selfloop transitions, 83 changer transitions 0/444 dead transitions. [2024-06-28 02:58:33,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 444 transitions, 6250 flow [2024-06-28 02:58:33,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:33,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:33,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-28 02:58:33,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46744186046511627 [2024-06-28 02:58:33,538 INFO L175 Difference]: Start difference. First operand has 214 places, 409 transitions, 5222 flow. Second operand 10 states and 201 transitions. [2024-06-28 02:58:33,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 444 transitions, 6250 flow [2024-06-28 02:58:33,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 444 transitions, 6131 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:33,967 INFO L231 Difference]: Finished difference. Result has 215 places, 411 transitions, 5342 flow [2024-06-28 02:58:33,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5103, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5342, PETRI_PLACES=215, PETRI_TRANSITIONS=411} [2024-06-28 02:58:33,967 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 171 predicate places. [2024-06-28 02:58:33,968 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 411 transitions, 5342 flow [2024-06-28 02:58:33,968 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 02:58:33,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:33,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:33,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:58:33,968 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:33,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:33,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1834069584, now seen corresponding path program 3 times [2024-06-28 02:58:33,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:33,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093697639] [2024-06-28 02:58:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:34,994 INFO 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 02:58:34,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:34,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093697639] [2024-06-28 02:58:34,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093697639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:34,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:34,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:34,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040898491] [2024-06-28 02:58:34,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:34,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:34,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:34,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:34,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:35,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:35,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 411 transitions, 5342 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 02:58:35,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:35,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:35,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:36,345 INFO L124 PetriNetUnfolderBase]: 3292/5096 cut-off events. [2024-06-28 02:58:36,345 INFO L125 PetriNetUnfolderBase]: For 337442/337462 co-relation queries the response was YES. [2024-06-28 02:58:36,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42408 conditions, 5096 events. 3292/5096 cut-off events. For 337442/337462 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 27863 event pairs, 793 based on Foata normal form. 20/5114 useless extension candidates. Maximal degree in co-relation 42313. Up to 4164 conditions per place. [2024-06-28 02:58:36,399 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 258 selfloop transitions, 192 changer transitions 0/456 dead transitions. [2024-06-28 02:58:36,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 456 transitions, 6952 flow [2024-06-28 02:58:36,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:36,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-28 02:58:36,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720930232558139 [2024-06-28 02:58:36,403 INFO L175 Difference]: Start difference. First operand has 215 places, 411 transitions, 5342 flow. Second operand 10 states and 203 transitions. [2024-06-28 02:58:36,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 456 transitions, 6952 flow [2024-06-28 02:58:37,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 456 transitions, 6731 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:37,024 INFO L231 Difference]: Finished difference. Result has 217 places, 420 transitions, 5729 flow [2024-06-28 02:58:37,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5121, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5729, PETRI_PLACES=217, PETRI_TRANSITIONS=420} [2024-06-28 02:58:37,025 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 173 predicate places. [2024-06-28 02:58:37,025 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 420 transitions, 5729 flow [2024-06-28 02:58:37,025 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 02:58:37,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:37,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:37,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:58:37,025 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:37,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1834064748, now seen corresponding path program 5 times [2024-06-28 02:58:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:37,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278914754] [2024-06-28 02:58:37,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:37,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:37,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:37,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278914754] [2024-06-28 02:58:37,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278914754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:37,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:37,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:37,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299341636] [2024-06-28 02:58:37,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:37,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:37,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:37,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:37,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:38,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:38,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 420 transitions, 5729 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 02:58:38,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:38,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:38,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:39,282 INFO L124 PetriNetUnfolderBase]: 3284/5078 cut-off events. [2024-06-28 02:58:39,282 INFO L125 PetriNetUnfolderBase]: For 361134/361147 co-relation queries the response was YES. [2024-06-28 02:58:39,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43158 conditions, 5078 events. 3284/5078 cut-off events. For 361134/361147 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 27814 event pairs, 937 based on Foata normal form. 8/5073 useless extension candidates. Maximal degree in co-relation 43062. Up to 4086 conditions per place. [2024-06-28 02:58:39,325 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 280 selfloop transitions, 173 changer transitions 0/459 dead transitions. [2024-06-28 02:58:39,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 459 transitions, 7089 flow [2024-06-28 02:58:39,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:39,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-28 02:58:39,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48604651162790696 [2024-06-28 02:58:39,326 INFO L175 Difference]: Start difference. First operand has 217 places, 420 transitions, 5729 flow. Second operand 10 states and 209 transitions. [2024-06-28 02:58:39,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 459 transitions, 7089 flow [2024-06-28 02:58:39,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 459 transitions, 6810 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-28 02:58:39,803 INFO L231 Difference]: Finished difference. Result has 222 places, 420 transitions, 5804 flow [2024-06-28 02:58:39,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5450, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5804, PETRI_PLACES=222, PETRI_TRANSITIONS=420} [2024-06-28 02:58:39,804 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 178 predicate places. [2024-06-28 02:58:39,804 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 420 transitions, 5804 flow [2024-06-28 02:58:39,804 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 02:58:39,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:39,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:39,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:58:39,804 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:39,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:39,805 INFO L85 PathProgramCache]: Analyzing trace with hash 689478782, now seen corresponding path program 4 times [2024-06-28 02:58:39,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:39,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122450666] [2024-06-28 02:58:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:39,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:40,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:40,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122450666] [2024-06-28 02:58:40,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122450666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:40,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:40,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:40,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477062215] [2024-06-28 02:58:40,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:40,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:40,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:40,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:40,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:40,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:40,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 420 transitions, 5804 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 02:58:40,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:40,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:40,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:42,297 INFO L124 PetriNetUnfolderBase]: 3295/5100 cut-off events. [2024-06-28 02:58:42,297 INFO L125 PetriNetUnfolderBase]: For 370963/370976 co-relation queries the response was YES. [2024-06-28 02:58:42,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43630 conditions, 5100 events. 3295/5100 cut-off events. For 370963/370976 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 27959 event pairs, 962 based on Foata normal form. 8/5096 useless extension candidates. Maximal degree in co-relation 43531. Up to 4448 conditions per place. [2024-06-28 02:58:42,351 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 303 selfloop transitions, 146 changer transitions 0/455 dead transitions. [2024-06-28 02:58:42,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 455 transitions, 6910 flow [2024-06-28 02:58:42,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 02:58:42,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 02:58:42,353 INFO L175 Difference]: Start difference. First operand has 222 places, 420 transitions, 5804 flow. Second operand 10 states and 196 transitions. [2024-06-28 02:58:42,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 455 transitions, 6910 flow [2024-06-28 02:58:42,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 455 transitions, 6470 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 02:58:42,874 INFO L231 Difference]: Finished difference. Result has 222 places, 423 transitions, 5722 flow [2024-06-28 02:58:42,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5364, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5722, PETRI_PLACES=222, PETRI_TRANSITIONS=423} [2024-06-28 02:58:42,875 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 178 predicate places. [2024-06-28 02:58:42,875 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 423 transitions, 5722 flow [2024-06-28 02:58:42,875 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 02:58:42,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:42,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:42,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:58:42,876 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:42,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:42,876 INFO L85 PathProgramCache]: Analyzing trace with hash 689305802, now seen corresponding path program 5 times [2024-06-28 02:58:42,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:42,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444245167] [2024-06-28 02:58:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:42,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:43,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:43,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444245167] [2024-06-28 02:58:43,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444245167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:43,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:43,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:43,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067540356] [2024-06-28 02:58:43,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:43,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:43,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:43,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:43,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:44,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:44,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 423 transitions, 5722 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 02:58:44,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:44,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:44,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:45,313 INFO L124 PetriNetUnfolderBase]: 3290/5093 cut-off events. [2024-06-28 02:58:45,313 INFO L125 PetriNetUnfolderBase]: For 381891/381904 co-relation queries the response was YES. [2024-06-28 02:58:45,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43566 conditions, 5093 events. 3290/5093 cut-off events. For 381891/381904 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 27915 event pairs, 962 based on Foata normal form. 8/5089 useless extension candidates. Maximal degree in co-relation 43466. Up to 4441 conditions per place. [2024-06-28 02:58:45,365 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 307 selfloop transitions, 142 changer transitions 0/455 dead transitions. [2024-06-28 02:58:45,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 455 transitions, 6776 flow [2024-06-28 02:58:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 02:58:45,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-28 02:58:45,366 INFO L175 Difference]: Start difference. First operand has 222 places, 423 transitions, 5722 flow. Second operand 10 states and 197 transitions. [2024-06-28 02:58:45,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 455 transitions, 6776 flow [2024-06-28 02:58:45,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 455 transitions, 6412 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:45,949 INFO L231 Difference]: Finished difference. Result has 224 places, 423 transitions, 5650 flow [2024-06-28 02:58:45,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5358, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5650, PETRI_PLACES=224, PETRI_TRANSITIONS=423} [2024-06-28 02:58:45,949 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 180 predicate places. [2024-06-28 02:58:45,949 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 423 transitions, 5650 flow [2024-06-28 02:58:45,950 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 02:58:45,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:45,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:45,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:58:45,950 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:45,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:45,950 INFO L85 PathProgramCache]: Analyzing trace with hash 710244466, now seen corresponding path program 1 times [2024-06-28 02:58:45,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:45,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651556140] [2024-06-28 02:58:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:45,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:46,483 INFO 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 02:58:46,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:46,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651556140] [2024-06-28 02:58:46,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651556140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:46,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:46,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:58:46,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531247128] [2024-06-28 02:58:46,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:46,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:58:46,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:46,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:58:46,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:58:46,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:46,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 423 transitions, 5650 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:46,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:46,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:46,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:47,569 INFO L124 PetriNetUnfolderBase]: 3621/5570 cut-off events. [2024-06-28 02:58:47,569 INFO L125 PetriNetUnfolderBase]: For 442276/442297 co-relation queries the response was YES. [2024-06-28 02:58:47,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47616 conditions, 5570 events. 3621/5570 cut-off events. For 442276/442297 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 30123 event pairs, 1231 based on Foata normal form. 5/5557 useless extension candidates. Maximal degree in co-relation 47515. Up to 5076 conditions per place. [2024-06-28 02:58:47,624 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 339 selfloop transitions, 34 changer transitions 0/447 dead transitions. [2024-06-28 02:58:47,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 447 transitions, 6626 flow [2024-06-28 02:58:47,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:58:47,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:58:47,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 02:58:47,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44518272425249167 [2024-06-28 02:58:47,626 INFO L175 Difference]: Start difference. First operand has 224 places, 423 transitions, 5650 flow. Second operand 7 states and 134 transitions. [2024-06-28 02:58:47,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 447 transitions, 6626 flow [2024-06-28 02:58:48,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 447 transitions, 6324 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:48,227 INFO L231 Difference]: Finished difference. Result has 222 places, 429 transitions, 5496 flow [2024-06-28 02:58:48,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5348, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5496, PETRI_PLACES=222, PETRI_TRANSITIONS=429} [2024-06-28 02:58:48,227 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 178 predicate places. [2024-06-28 02:58:48,228 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 429 transitions, 5496 flow [2024-06-28 02:58:48,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:48,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:48,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:48,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:58:48,228 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:48,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:48,229 INFO L85 PathProgramCache]: Analyzing trace with hash 148378520, now seen corresponding path program 7 times [2024-06-28 02:58:48,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:48,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978705641] [2024-06-28 02:58:48,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:48,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:49,558 INFO 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 02:58:49,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:49,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978705641] [2024-06-28 02:58:49,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978705641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:49,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:49,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:49,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645247593] [2024-06-28 02:58:49,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:49,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:49,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:49,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:49,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:49,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:49,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 429 transitions, 5496 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 02:58:49,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:49,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:49,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:50,887 INFO L124 PetriNetUnfolderBase]: 3326/5130 cut-off events. [2024-06-28 02:58:50,887 INFO L125 PetriNetUnfolderBase]: For 471221/471365 co-relation queries the response was YES. [2024-06-28 02:58:50,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46092 conditions, 5130 events. 3326/5130 cut-off events. For 471221/471365 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 28457 event pairs, 762 based on Foata normal form. 27/5085 useless extension candidates. Maximal degree in co-relation 45990. Up to 4175 conditions per place. [2024-06-28 02:58:50,932 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 304 selfloop transitions, 124 changer transitions 0/474 dead transitions. [2024-06-28 02:58:50,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 474 transitions, 6838 flow [2024-06-28 02:58:50,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 02:58:50,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744186046511628 [2024-06-28 02:58:50,934 INFO L175 Difference]: Start difference. First operand has 222 places, 429 transitions, 5496 flow. Second operand 10 states and 204 transitions. [2024-06-28 02:58:50,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 474 transitions, 6838 flow [2024-06-28 02:58:51,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 474 transitions, 6786 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 02:58:51,459 INFO L231 Difference]: Finished difference. Result has 229 places, 433 transitions, 5831 flow [2024-06-28 02:58:51,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5444, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5831, PETRI_PLACES=229, PETRI_TRANSITIONS=433} [2024-06-28 02:58:51,460 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 185 predicate places. [2024-06-28 02:58:51,460 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 433 transitions, 5831 flow [2024-06-28 02:58:51,460 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 02:58:51,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:51,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:51,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:58:51,460 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:51,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1992398921, now seen corresponding path program 1 times [2024-06-28 02:58:51,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:51,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45347958] [2024-06-28 02:58:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:51,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:52,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:52,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45347958] [2024-06-28 02:58:52,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45347958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:52,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:52,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:52,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667498425] [2024-06-28 02:58:52,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:52,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:52,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:52,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:52,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:52,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:52,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 433 transitions, 5831 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 02:58:52,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:52,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:52,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:54,516 INFO L124 PetriNetUnfolderBase]: 3388/5215 cut-off events. [2024-06-28 02:58:54,516 INFO L125 PetriNetUnfolderBase]: For 440120/440134 co-relation queries the response was YES. [2024-06-28 02:58:54,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46403 conditions, 5215 events. 3388/5215 cut-off events. For 440120/440134 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 28500 event pairs, 982 based on Foata normal form. 6/5195 useless extension candidates. Maximal degree in co-relation 46299. Up to 4719 conditions per place. [2024-06-28 02:58:54,568 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 391 selfloop transitions, 86 changer transitions 0/485 dead transitions. [2024-06-28 02:58:54,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 485 transitions, 7369 flow [2024-06-28 02:58:54,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:58:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:58:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 248 transitions. [2024-06-28 02:58:54,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44364937388193204 [2024-06-28 02:58:54,569 INFO L175 Difference]: Start difference. First operand has 229 places, 433 transitions, 5831 flow. Second operand 13 states and 248 transitions. [2024-06-28 02:58:54,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 485 transitions, 7369 flow [2024-06-28 02:58:55,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 485 transitions, 7079 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:55,144 INFO L231 Difference]: Finished difference. Result has 234 places, 436 transitions, 5814 flow [2024-06-28 02:58:55,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5559, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5814, PETRI_PLACES=234, PETRI_TRANSITIONS=436} [2024-06-28 02:58:55,144 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places. [2024-06-28 02:58:55,145 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 436 transitions, 5814 flow [2024-06-28 02:58:55,145 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 02:58:55,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:55,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:55,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:58:55,145 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:55,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:55,146 INFO L85 PathProgramCache]: Analyzing trace with hash 108296998, now seen corresponding path program 8 times [2024-06-28 02:58:55,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:55,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162829975] [2024-06-28 02:58:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:55,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:56,516 INFO 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 02:58:56,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:56,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162829975] [2024-06-28 02:58:56,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162829975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:56,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:56,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:56,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509443996] [2024-06-28 02:58:56,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:56,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:56,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:56,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:56,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:56,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:58:56,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 436 transitions, 5814 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 02:58:56,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:56,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:58:56,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:57,813 INFO L124 PetriNetUnfolderBase]: 3248/5064 cut-off events. [2024-06-28 02:58:57,813 INFO L125 PetriNetUnfolderBase]: For 426457/426522 co-relation queries the response was YES. [2024-06-28 02:58:57,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44568 conditions, 5064 events. 3248/5064 cut-off events. For 426457/426522 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 28341 event pairs, 939 based on Foata normal form. 23/5045 useless extension candidates. Maximal degree in co-relation 44464. Up to 4349 conditions per place. [2024-06-28 02:58:57,864 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 333 selfloop transitions, 94 changer transitions 0/473 dead transitions. [2024-06-28 02:58:57,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 473 transitions, 6840 flow [2024-06-28 02:58:57,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:58:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:58:57,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 02:58:57,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 02:58:57,865 INFO L175 Difference]: Start difference. First operand has 234 places, 436 transitions, 5814 flow. Second operand 10 states and 200 transitions. [2024-06-28 02:58:57,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 473 transitions, 6840 flow [2024-06-28 02:58:58,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 473 transitions, 6522 flow, removed 82 selfloop flow, removed 10 redundant places. [2024-06-28 02:58:58,479 INFO L231 Difference]: Finished difference. Result has 234 places, 436 transitions, 5712 flow [2024-06-28 02:58:58,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5496, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5712, PETRI_PLACES=234, PETRI_TRANSITIONS=436} [2024-06-28 02:58:58,480 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places. [2024-06-28 02:58:58,480 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 436 transitions, 5712 flow [2024-06-28 02:58:58,480 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 02:58:58,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:58,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:58,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:58:58,481 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:58,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:58,481 INFO L85 PathProgramCache]: Analyzing trace with hash -248602433, now seen corresponding path program 2 times [2024-06-28 02:58:58,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:58,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805513953] [2024-06-28 02:58:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:58,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:59,670 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 02:58:59,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:59,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805513953] [2024-06-28 02:58:59,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805513953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:59,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:59,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:59,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129006744] [2024-06-28 02:58:59,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:59,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:59,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:59,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:59,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:59,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:58:59,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 436 transitions, 5712 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 02:58:59,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:59,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:58:59,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:01,099 INFO L124 PetriNetUnfolderBase]: 3389/5233 cut-off events. [2024-06-28 02:59:01,099 INFO L125 PetriNetUnfolderBase]: For 404503/404512 co-relation queries the response was YES. [2024-06-28 02:59:01,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45151 conditions, 5233 events. 3389/5233 cut-off events. For 404503/404512 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 28736 event pairs, 952 based on Foata normal form. 6/5224 useless extension candidates. Maximal degree in co-relation 45046. Up to 4702 conditions per place. [2024-06-28 02:59:01,151 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 394 selfloop transitions, 89 changer transitions 0/491 dead transitions. [2024-06-28 02:59:01,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 491 transitions, 6986 flow [2024-06-28 02:59:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 02:59:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 02:59:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 260 transitions. [2024-06-28 02:59:01,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318936877076412 [2024-06-28 02:59:01,153 INFO L175 Difference]: Start difference. First operand has 234 places, 436 transitions, 5712 flow. Second operand 14 states and 260 transitions. [2024-06-28 02:59:01,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 491 transitions, 6986 flow [2024-06-28 02:59:01,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 491 transitions, 6755 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:01,608 INFO L231 Difference]: Finished difference. Result has 238 places, 442 transitions, 5774 flow [2024-06-28 02:59:01,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5481, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5774, PETRI_PLACES=238, PETRI_TRANSITIONS=442} [2024-06-28 02:59:01,609 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 194 predicate places. [2024-06-28 02:59:01,609 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 442 transitions, 5774 flow [2024-06-28 02:59:01,609 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 02:59:01,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:01,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:01,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:59:01,609 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:01,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:01,610 INFO L85 PathProgramCache]: Analyzing trace with hash -552486662, now seen corresponding path program 6 times [2024-06-28 02:59:01,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:01,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709717997] [2024-06-28 02:59:01,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:01,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:02,876 INFO 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 02:59:02,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:02,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709717997] [2024-06-28 02:59:02,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709717997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:02,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:02,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:02,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576671911] [2024-06-28 02:59:02,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:02,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:02,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:02,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:02,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:03,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:03,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 442 transitions, 5774 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 02:59:03,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:03,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:03,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:04,221 INFO L124 PetriNetUnfolderBase]: 3537/5434 cut-off events. [2024-06-28 02:59:04,221 INFO L125 PetriNetUnfolderBase]: For 417750/417767 co-relation queries the response was YES. [2024-06-28 02:59:04,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47085 conditions, 5434 events. 3537/5434 cut-off events. For 417750/417767 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 29952 event pairs, 990 based on Foata normal form. 5/5403 useless extension candidates. Maximal degree in co-relation 46980. Up to 4804 conditions per place. [2024-06-28 02:59:04,274 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 374 selfloop transitions, 136 changer transitions 0/518 dead transitions. [2024-06-28 02:59:04,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 518 transitions, 7753 flow [2024-06-28 02:59:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:04,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 02:59:04,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 02:59:04,276 INFO L175 Difference]: Start difference. First operand has 238 places, 442 transitions, 5774 flow. Second operand 10 states and 196 transitions. [2024-06-28 02:59:04,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 518 transitions, 7753 flow [2024-06-28 02:59:04,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 518 transitions, 7493 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-06-28 02:59:04,808 INFO L231 Difference]: Finished difference. Result has 237 places, 478 transitions, 6416 flow [2024-06-28 02:59:04,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5547, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6416, PETRI_PLACES=237, PETRI_TRANSITIONS=478} [2024-06-28 02:59:04,809 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 193 predicate places. [2024-06-28 02:59:04,809 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 478 transitions, 6416 flow [2024-06-28 02:59:04,809 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 02:59:04,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:04,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:04,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:59:04,810 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:04,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:04,810 INFO L85 PathProgramCache]: Analyzing trace with hash -549690152, now seen corresponding path program 7 times [2024-06-28 02:59:04,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:04,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044781043] [2024-06-28 02:59:04,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:04,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:06,083 INFO 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 02:59:06,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:06,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044781043] [2024-06-28 02:59:06,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044781043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:06,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:06,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:06,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275438220] [2024-06-28 02:59:06,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:06,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:06,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:06,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:06,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:06,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:06,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 478 transitions, 6416 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 02:59:06,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:06,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:06,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:07,363 INFO L124 PetriNetUnfolderBase]: 3571/5486 cut-off events. [2024-06-28 02:59:07,363 INFO L125 PetriNetUnfolderBase]: For 415374/415388 co-relation queries the response was YES. [2024-06-28 02:59:07,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47830 conditions, 5486 events. 3571/5486 cut-off events. For 415374/415388 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 30231 event pairs, 1023 based on Foata normal form. 5/5461 useless extension candidates. Maximal degree in co-relation 47723. Up to 4955 conditions per place. [2024-06-28 02:59:07,418 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 411 selfloop transitions, 112 changer transitions 0/531 dead transitions. [2024-06-28 02:59:07,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 531 transitions, 8146 flow [2024-06-28 02:59:07,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:07,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 02:59:07,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-28 02:59:07,419 INFO L175 Difference]: Start difference. First operand has 237 places, 478 transitions, 6416 flow. Second operand 9 states and 175 transitions. [2024-06-28 02:59:07,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 531 transitions, 8146 flow [2024-06-28 02:59:08,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 531 transitions, 7810 flow, removed 75 selfloop flow, removed 6 redundant places. [2024-06-28 02:59:08,124 INFO L231 Difference]: Finished difference. Result has 240 places, 496 transitions, 6636 flow [2024-06-28 02:59:08,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6120, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6636, PETRI_PLACES=240, PETRI_TRANSITIONS=496} [2024-06-28 02:59:08,125 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 196 predicate places. [2024-06-28 02:59:08,125 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 496 transitions, 6636 flow [2024-06-28 02:59:08,125 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 02:59:08,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:08,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:08,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:59:08,126 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:08,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash 151182780, now seen corresponding path program 6 times [2024-06-28 02:59:08,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:08,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168724928] [2024-06-28 02:59:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:08,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:09,244 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 02:59:09,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168724928] [2024-06-28 02:59:09,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168724928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:09,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:09,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:09,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532128724] [2024-06-28 02:59:09,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:09,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:09,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:09,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:09,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:09,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 496 transitions, 6636 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 02:59:09,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:09,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:09,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:10,513 INFO L124 PetriNetUnfolderBase]: 3568/5495 cut-off events. [2024-06-28 02:59:10,514 INFO L125 PetriNetUnfolderBase]: For 430927/430941 co-relation queries the response was YES. [2024-06-28 02:59:10,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47789 conditions, 5495 events. 3568/5495 cut-off events. For 430927/430941 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 30369 event pairs, 991 based on Foata normal form. 8/5477 useless extension candidates. Maximal degree in co-relation 47681. Up to 4996 conditions per place. [2024-06-28 02:59:10,559 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 436 selfloop transitions, 86 changer transitions 0/530 dead transitions. [2024-06-28 02:59:10,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 530 transitions, 7918 flow [2024-06-28 02:59:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 02:59:10,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 02:59:10,561 INFO L175 Difference]: Start difference. First operand has 240 places, 496 transitions, 6636 flow. Second operand 9 states and 172 transitions. [2024-06-28 02:59:10,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 530 transitions, 7918 flow [2024-06-28 02:59:11,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 530 transitions, 7520 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:11,139 INFO L231 Difference]: Finished difference. Result has 241 places, 499 transitions, 6528 flow [2024-06-28 02:59:11,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6238, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6528, PETRI_PLACES=241, PETRI_TRANSITIONS=499} [2024-06-28 02:59:11,140 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 197 predicate places. [2024-06-28 02:59:11,140 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 499 transitions, 6528 flow [2024-06-28 02:59:11,140 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 02:59:11,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:11,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:11,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:59:11,140 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:11,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:11,141 INFO L85 PathProgramCache]: Analyzing trace with hash 262005114, now seen corresponding path program 8 times [2024-06-28 02:59:11,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:11,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354959850] [2024-06-28 02:59:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:11,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:12,553 INFO 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 02:59:12,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:12,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354959850] [2024-06-28 02:59:12,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354959850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:12,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:12,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:12,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900859897] [2024-06-28 02:59:12,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:12,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:12,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:12,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:12,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:12,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:12,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 499 transitions, 6528 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 02:59:12,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:12,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:12,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:13,946 INFO L124 PetriNetUnfolderBase]: 3563/5480 cut-off events. [2024-06-28 02:59:13,946 INFO L125 PetriNetUnfolderBase]: For 437456/437470 co-relation queries the response was YES. [2024-06-28 02:59:13,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47978 conditions, 5480 events. 3563/5480 cut-off events. For 437456/437470 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 30223 event pairs, 1028 based on Foata normal form. 5/5455 useless extension candidates. Maximal degree in co-relation 47870. Up to 5032 conditions per place. [2024-06-28 02:59:13,997 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 440 selfloop transitions, 82 changer transitions 0/530 dead transitions. [2024-06-28 02:59:13,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 530 transitions, 7735 flow [2024-06-28 02:59:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:13,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:13,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 02:59:13,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 02:59:13,998 INFO L175 Difference]: Start difference. First operand has 241 places, 499 transitions, 6528 flow. Second operand 9 states and 171 transitions. [2024-06-28 02:59:13,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 530 transitions, 7735 flow [2024-06-28 02:59:14,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 530 transitions, 7399 flow, removed 92 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:14,673 INFO L231 Difference]: Finished difference. Result has 242 places, 499 transitions, 6384 flow [2024-06-28 02:59:14,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6192, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6384, PETRI_PLACES=242, PETRI_TRANSITIONS=499} [2024-06-28 02:59:14,674 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 198 predicate places. [2024-06-28 02:59:14,674 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 499 transitions, 6384 flow [2024-06-28 02:59:14,674 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 02:59:14,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:14,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:14,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:59:14,675 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:14,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:14,675 INFO L85 PathProgramCache]: Analyzing trace with hash -489897034, now seen corresponding path program 7 times [2024-06-28 02:59:14,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:14,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186707972] [2024-06-28 02:59:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:14,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:15,772 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 02:59:15,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:15,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186707972] [2024-06-28 02:59:15,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186707972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:15,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:15,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:15,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369256026] [2024-06-28 02:59:15,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:15,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:15,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:15,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:15,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:15,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:15,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 499 transitions, 6384 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 02:59:15,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:15,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:15,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:16,994 INFO L124 PetriNetUnfolderBase]: 3648/5626 cut-off events. [2024-06-28 02:59:16,994 INFO L125 PetriNetUnfolderBase]: For 431213/431226 co-relation queries the response was YES. [2024-06-28 02:59:17,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48846 conditions, 5626 events. 3648/5626 cut-off events. For 431213/431226 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 31257 event pairs, 944 based on Foata normal form. 10/5619 useless extension candidates. Maximal degree in co-relation 48738. Up to 4483 conditions per place. [2024-06-28 02:59:17,049 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 340 selfloop transitions, 215 changer transitions 0/563 dead transitions. [2024-06-28 02:59:17,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 563 transitions, 8695 flow [2024-06-28 02:59:17,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:17,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 02:59:17,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-28 02:59:17,051 INFO L175 Difference]: Start difference. First operand has 242 places, 499 transitions, 6384 flow. Second operand 9 states and 185 transitions. [2024-06-28 02:59:17,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 563 transitions, 8695 flow [2024-06-28 02:59:17,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 563 transitions, 8543 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:17,594 INFO L231 Difference]: Finished difference. Result has 244 places, 518 transitions, 7214 flow [2024-06-28 02:59:17,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6232, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7214, PETRI_PLACES=244, PETRI_TRANSITIONS=518} [2024-06-28 02:59:17,594 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 200 predicate places. [2024-06-28 02:59:17,595 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 518 transitions, 7214 flow [2024-06-28 02:59:17,595 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 02:59:17,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:17,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:17,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:59:17,595 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:17,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash -434221352, now seen corresponding path program 9 times [2024-06-28 02:59:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:17,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056949969] [2024-06-28 02:59:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:17,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:18,748 INFO 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 02:59:18,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:18,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056949969] [2024-06-28 02:59:18,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056949969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:18,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:18,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:18,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855091204] [2024-06-28 02:59:18,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:18,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:18,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:18,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:18,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:18,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:18,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 518 transitions, 7214 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 02:59:18,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:18,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:18,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:19,984 INFO L124 PetriNetUnfolderBase]: 3659/5641 cut-off events. [2024-06-28 02:59:19,984 INFO L125 PetriNetUnfolderBase]: For 447776/447789 co-relation queries the response was YES. [2024-06-28 02:59:20,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50247 conditions, 5641 events. 3659/5641 cut-off events. For 447776/447789 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 31327 event pairs, 979 based on Foata normal form. 8/5633 useless extension candidates. Maximal degree in co-relation 50138. Up to 4955 conditions per place. [2024-06-28 02:59:20,043 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 397 selfloop transitions, 149 changer transitions 0/554 dead transitions. [2024-06-28 02:59:20,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 554 transitions, 8600 flow [2024-06-28 02:59:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:20,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 02:59:20,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-28 02:59:20,044 INFO L175 Difference]: Start difference. First operand has 244 places, 518 transitions, 7214 flow. Second operand 9 states and 175 transitions. [2024-06-28 02:59:20,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 554 transitions, 8600 flow [2024-06-28 02:59:20,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 554 transitions, 8245 flow, removed 119 selfloop flow, removed 5 redundant places. [2024-06-28 02:59:20,707 INFO L231 Difference]: Finished difference. Result has 248 places, 521 transitions, 7252 flow [2024-06-28 02:59:20,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6859, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7252, PETRI_PLACES=248, PETRI_TRANSITIONS=521} [2024-06-28 02:59:20,707 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 204 predicate places. [2024-06-28 02:59:20,707 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 521 transitions, 7252 flow [2024-06-28 02:59:20,708 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 02:59:20,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:20,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:20,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:59:20,708 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:20,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash 266646930, now seen corresponding path program 8 times [2024-06-28 02:59:20,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:20,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578653964] [2024-06-28 02:59:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:20,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:21,708 INFO 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 02:59:21,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:21,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578653964] [2024-06-28 02:59:21,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578653964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:21,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:21,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:21,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33610644] [2024-06-28 02:59:21,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:21,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:21,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:21,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:21,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:21,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:21,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 521 transitions, 7252 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 02:59:21,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:21,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:21,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:23,034 INFO L124 PetriNetUnfolderBase]: 3836/5907 cut-off events. [2024-06-28 02:59:23,035 INFO L125 PetriNetUnfolderBase]: For 459677/459694 co-relation queries the response was YES. [2024-06-28 02:59:23,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52371 conditions, 5907 events. 3836/5907 cut-off events. For 459677/459694 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 33117 event pairs, 1269 based on Foata normal form. 6/5887 useless extension candidates. Maximal degree in co-relation 52261. Up to 4915 conditions per place. [2024-06-28 02:59:23,104 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 427 selfloop transitions, 187 changer transitions 0/622 dead transitions. [2024-06-28 02:59:23,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 622 transitions, 10049 flow [2024-06-28 02:59:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 02:59:23,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 02:59:23,105 INFO L175 Difference]: Start difference. First operand has 248 places, 521 transitions, 7252 flow. Second operand 10 states and 196 transitions. [2024-06-28 02:59:23,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 622 transitions, 10049 flow [2024-06-28 02:59:23,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 622 transitions, 9624 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:23,750 INFO L231 Difference]: Finished difference. Result has 254 places, 571 transitions, 8311 flow [2024-06-28 02:59:23,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6891, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8311, PETRI_PLACES=254, PETRI_TRANSITIONS=571} [2024-06-28 02:59:23,751 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 210 predicate places. [2024-06-28 02:59:23,751 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 571 transitions, 8311 flow [2024-06-28 02:59:23,751 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 02:59:23,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:23,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:23,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:59:23,751 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:23,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:23,752 INFO L85 PathProgramCache]: Analyzing trace with hash -434394146, now seen corresponding path program 9 times [2024-06-28 02:59:23,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:23,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506040845] [2024-06-28 02:59:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:23,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:24,850 INFO 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 02:59:24,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:24,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506040845] [2024-06-28 02:59:24,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506040845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:24,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:24,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:24,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419911731] [2024-06-28 02:59:24,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:24,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:24,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:24,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:24,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:24,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 571 transitions, 8311 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 02:59:24,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:24,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:24,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:26,137 INFO L124 PetriNetUnfolderBase]: 3812/5876 cut-off events. [2024-06-28 02:59:26,137 INFO L125 PetriNetUnfolderBase]: For 447150/447164 co-relation queries the response was YES. [2024-06-28 02:59:26,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52409 conditions, 5876 events. 3812/5876 cut-off events. For 447150/447164 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 32893 event pairs, 943 based on Foata normal form. 10/5869 useless extension candidates. Maximal degree in co-relation 52295. Up to 4628 conditions per place. [2024-06-28 02:59:26,200 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 361 selfloop transitions, 247 changer transitions 0/616 dead transitions. [2024-06-28 02:59:26,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 616 transitions, 10034 flow [2024-06-28 02:59:26,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-28 02:59:26,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-06-28 02:59:26,201 INFO L175 Difference]: Start difference. First operand has 254 places, 571 transitions, 8311 flow. Second operand 9 states and 186 transitions. [2024-06-28 02:59:26,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 616 transitions, 10034 flow [2024-06-28 02:59:26,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 616 transitions, 9548 flow, removed 120 selfloop flow, removed 5 redundant places. [2024-06-28 02:59:26,861 INFO L231 Difference]: Finished difference. Result has 258 places, 571 transitions, 8340 flow [2024-06-28 02:59:26,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7825, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8340, PETRI_PLACES=258, PETRI_TRANSITIONS=571} [2024-06-28 02:59:26,862 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 214 predicate places. [2024-06-28 02:59:26,862 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 571 transitions, 8340 flow [2024-06-28 02:59:26,862 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 02:59:26,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:26,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:26,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:59:26,862 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:26,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:26,863 INFO L85 PathProgramCache]: Analyzing trace with hash 266468990, now seen corresponding path program 9 times [2024-06-28 02:59:26,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:26,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933968254] [2024-06-28 02:59:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:26,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:28,073 INFO 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 02:59:28,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:28,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933968254] [2024-06-28 02:59:28,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933968254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:28,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:28,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:28,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724408427] [2024-06-28 02:59:28,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:28,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:28,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:28,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:28,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:28,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:59:28,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 571 transitions, 8340 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 02:59:28,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:28,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:59:28,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:29,347 INFO L124 PetriNetUnfolderBase]: 3663/5731 cut-off events. [2024-06-28 02:59:29,347 INFO L125 PetriNetUnfolderBase]: For 457939/457952 co-relation queries the response was YES. [2024-06-28 02:59:29,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51840 conditions, 5731 events. 3663/5731 cut-off events. For 457939/457952 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 32716 event pairs, 940 based on Foata normal form. 10/5726 useless extension candidates. Maximal degree in co-relation 51725. Up to 4935 conditions per place. [2024-06-28 02:59:29,410 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 443 selfloop transitions, 101 changer transitions 0/604 dead transitions. [2024-06-28 02:59:29,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 604 transitions, 9680 flow [2024-06-28 02:59:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:29,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-28 02:59:29,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 02:59:29,412 INFO L175 Difference]: Start difference. First operand has 258 places, 571 transitions, 8340 flow. Second operand 9 states and 180 transitions. [2024-06-28 02:59:29,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 604 transitions, 9680 flow [2024-06-28 02:59:30,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 604 transitions, 9051 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 02:59:30,191 INFO L231 Difference]: Finished difference. Result has 257 places, 573 transitions, 8001 flow [2024-06-28 02:59:30,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7711, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8001, PETRI_PLACES=257, PETRI_TRANSITIONS=573} [2024-06-28 02:59:30,193 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 213 predicate places. [2024-06-28 02:59:30,193 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 573 transitions, 8001 flow [2024-06-28 02:59:30,193 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 02:59:30,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:30,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:30,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:59:30,194 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:30,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:30,195 INFO L85 PathProgramCache]: Analyzing trace with hash 266473764, now seen corresponding path program 10 times [2024-06-28 02:59:30,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:30,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564049619] [2024-06-28 02:59:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:30,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:31,394 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 02:59:31,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:31,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564049619] [2024-06-28 02:59:31,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564049619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:31,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:31,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:31,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301787744] [2024-06-28 02:59:31,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:31,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:31,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:31,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:31,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:31,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:31,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 573 transitions, 8001 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 02:59:31,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:31,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:31,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:32,795 INFO L124 PetriNetUnfolderBase]: 3840/5923 cut-off events. [2024-06-28 02:59:32,796 INFO L125 PetriNetUnfolderBase]: For 456621/456635 co-relation queries the response was YES. [2024-06-28 02:59:32,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52639 conditions, 5923 events. 3840/5923 cut-off events. For 456621/456635 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 33234 event pairs, 983 based on Foata normal form. 8/5915 useless extension candidates. Maximal degree in co-relation 52525. Up to 5182 conditions per place. [2024-06-28 02:59:32,849 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 435 selfloop transitions, 166 changer transitions 0/609 dead transitions. [2024-06-28 02:59:32,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 609 transitions, 9503 flow [2024-06-28 02:59:32,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:32,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:32,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 02:59:32,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2024-06-28 02:59:32,850 INFO L175 Difference]: Start difference. First operand has 257 places, 573 transitions, 8001 flow. Second operand 9 states and 176 transitions. [2024-06-28 02:59:32,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 609 transitions, 9503 flow [2024-06-28 02:59:33,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 609 transitions, 9241 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:33,466 INFO L231 Difference]: Finished difference. Result has 259 places, 576 transitions, 8173 flow [2024-06-28 02:59:33,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7739, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8173, PETRI_PLACES=259, PETRI_TRANSITIONS=576} [2024-06-28 02:59:33,467 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 215 predicate places. [2024-06-28 02:59:33,467 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 576 transitions, 8173 flow [2024-06-28 02:59:33,467 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 02:59:33,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:33,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:33,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:59:33,468 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:33,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:33,468 INFO L85 PathProgramCache]: Analyzing trace with hash -434398982, now seen corresponding path program 11 times [2024-06-28 02:59:33,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:33,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407604260] [2024-06-28 02:59:33,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:33,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:34,646 INFO 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 02:59:34,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:34,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407604260] [2024-06-28 02:59:34,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407604260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:34,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:34,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:34,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430006048] [2024-06-28 02:59:34,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:34,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:34,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:34,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:34,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:34,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:34,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 576 transitions, 8173 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 02:59:34,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:34,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:34,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:36,093 INFO L124 PetriNetUnfolderBase]: 3851/5939 cut-off events. [2024-06-28 02:59:36,093 INFO L125 PetriNetUnfolderBase]: For 472120/472134 co-relation queries the response was YES. [2024-06-28 02:59:36,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53189 conditions, 5939 events. 3851/5939 cut-off events. For 472120/472134 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 33331 event pairs, 983 based on Foata normal form. 8/5931 useless extension candidates. Maximal degree in co-relation 53074. Up to 5132 conditions per place. [2024-06-28 02:59:36,153 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 423 selfloop transitions, 180 changer transitions 0/611 dead transitions. [2024-06-28 02:59:36,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 611 transitions, 9671 flow [2024-06-28 02:59:36,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:36,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:36,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 02:59:36,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573643410852713 [2024-06-28 02:59:36,155 INFO L175 Difference]: Start difference. First operand has 259 places, 576 transitions, 8173 flow. Second operand 9 states and 177 transitions. [2024-06-28 02:59:36,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 611 transitions, 9671 flow [2024-06-28 02:59:36,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 611 transitions, 9270 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:36,810 INFO L231 Difference]: Finished difference. Result has 260 places, 579 transitions, 8238 flow [2024-06-28 02:59:36,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7772, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8238, PETRI_PLACES=260, PETRI_TRANSITIONS=579} [2024-06-28 02:59:36,810 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 216 predicate places. [2024-06-28 02:59:36,810 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 579 transitions, 8238 flow [2024-06-28 02:59:36,810 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 02:59:36,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:36,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:36,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:59:36,811 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:36,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:36,811 INFO L85 PathProgramCache]: Analyzing trace with hash 90925378, now seen corresponding path program 2 times [2024-06-28 02:59:36,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:36,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254204001] [2024-06-28 02:59:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:36,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:59:37,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254204001] [2024-06-28 02:59:37,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254204001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:37,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:37,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:59:37,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428627342] [2024-06-28 02:59:37,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:37,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:59:37,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:59:37,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:59:37,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:37,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 579 transitions, 8238 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:37,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:37,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:37,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:38,892 INFO L124 PetriNetUnfolderBase]: 4220/6464 cut-off events. [2024-06-28 02:59:38,892 INFO L125 PetriNetUnfolderBase]: For 528181/528229 co-relation queries the response was YES. [2024-06-28 02:59:38,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57481 conditions, 6464 events. 4220/6464 cut-off events. For 528181/528229 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 35794 event pairs, 1260 based on Foata normal form. 27/6458 useless extension candidates. Maximal degree in co-relation 57366. Up to 5883 conditions per place. [2024-06-28 02:59:38,956 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 464 selfloop transitions, 42 changer transitions 0/596 dead transitions. [2024-06-28 02:59:38,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 596 transitions, 9452 flow [2024-06-28 02:59:38,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:59:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:59:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 02:59:38,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 02:59:38,957 INFO L175 Difference]: Start difference. First operand has 260 places, 579 transitions, 8238 flow. Second operand 6 states and 116 transitions. [2024-06-28 02:59:38,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 596 transitions, 9452 flow [2024-06-28 02:59:39,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 596 transitions, 9014 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-28 02:59:39,702 INFO L231 Difference]: Finished difference. Result has 258 places, 582 transitions, 7941 flow [2024-06-28 02:59:39,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7802, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7941, PETRI_PLACES=258, PETRI_TRANSITIONS=582} [2024-06-28 02:59:39,703 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 214 predicate places. [2024-06-28 02:59:39,703 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 582 transitions, 7941 flow [2024-06-28 02:59:39,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:39,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:39,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:39,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:59:39,704 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:39,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:39,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1393491160, now seen corresponding path program 10 times [2024-06-28 02:59:39,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:39,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72216492] [2024-06-28 02:59:39,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:39,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:40,781 INFO 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 02:59:40,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:40,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72216492] [2024-06-28 02:59:40,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72216492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:40,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:40,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093248643] [2024-06-28 02:59:40,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:40,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:40,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:40,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:40,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:40,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:40,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 582 transitions, 7941 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 02:59:40,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:40,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:40,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:42,361 INFO L124 PetriNetUnfolderBase]: 3955/6093 cut-off events. [2024-06-28 02:59:42,361 INFO L125 PetriNetUnfolderBase]: For 494805/494820 co-relation queries the response was YES. [2024-06-28 02:59:42,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54566 conditions, 6093 events. 3955/6093 cut-off events. For 494805/494820 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 34457 event pairs, 1307 based on Foata normal form. 6/6074 useless extension candidates. Maximal degree in co-relation 54451. Up to 5427 conditions per place. [2024-06-28 02:59:42,418 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 549 selfloop transitions, 88 changer transitions 0/646 dead transitions. [2024-06-28 02:59:42,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 646 transitions, 10433 flow [2024-06-28 02:59:42,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:59:42,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:59:42,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 02:59:42,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 02:59:42,420 INFO L175 Difference]: Start difference. First operand has 258 places, 582 transitions, 7941 flow. Second operand 10 states and 190 transitions. [2024-06-28 02:59:42,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 646 transitions, 10433 flow [2024-06-28 02:59:43,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 646 transitions, 10353 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 02:59:43,114 INFO L231 Difference]: Finished difference. Result has 264 places, 598 transitions, 8532 flow [2024-06-28 02:59:43,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7865, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8532, PETRI_PLACES=264, PETRI_TRANSITIONS=598} [2024-06-28 02:59:43,114 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 220 predicate places. [2024-06-28 02:59:43,114 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 598 transitions, 8532 flow [2024-06-28 02:59:43,115 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 02:59:43,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:43,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:43,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:59:43,115 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:43,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:43,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1476279526, now seen corresponding path program 1 times [2024-06-28 02:59:43,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:43,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380265747] [2024-06-28 02:59:43,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:43,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:44,047 INFO 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 02:59:44,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:44,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380265747] [2024-06-28 02:59:44,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380265747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:44,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:44,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:59:44,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286346694] [2024-06-28 02:59:44,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:44,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:59:44,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:44,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:59:44,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:59:44,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:44,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 598 transitions, 8532 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:44,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:44,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:44,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:45,525 INFO L124 PetriNetUnfolderBase]: 4346/6666 cut-off events. [2024-06-28 02:59:45,525 INFO L125 PetriNetUnfolderBase]: For 557815/557863 co-relation queries the response was YES. [2024-06-28 02:59:45,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59727 conditions, 6666 events. 4346/6666 cut-off events. For 557815/557863 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 37167 event pairs, 1282 based on Foata normal form. 31/6664 useless extension candidates. Maximal degree in co-relation 59612. Up to 6044 conditions per place. [2024-06-28 02:59:45,589 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 487 selfloop transitions, 49 changer transitions 0/626 dead transitions. [2024-06-28 02:59:45,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 626 transitions, 9868 flow [2024-06-28 02:59:45,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:59:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:59:45,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 02:59:45,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-28 02:59:45,590 INFO L175 Difference]: Start difference. First operand has 264 places, 598 transitions, 8532 flow. Second operand 7 states and 136 transitions. [2024-06-28 02:59:45,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 626 transitions, 9868 flow [2024-06-28 02:59:46,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 626 transitions, 9521 flow, removed 115 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:46,330 INFO L231 Difference]: Finished difference. Result has 265 places, 607 transitions, 8401 flow [2024-06-28 02:59:46,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8185, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8401, PETRI_PLACES=265, PETRI_TRANSITIONS=607} [2024-06-28 02:59:46,330 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 221 predicate places. [2024-06-28 02:59:46,331 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 607 transitions, 8401 flow [2024-06-28 02:59:46,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:59:46,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:46,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:46,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:59:46,331 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:46,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:46,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1289795106, now seen corresponding path program 12 times [2024-06-28 02:59:46,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:46,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133979828] [2024-06-28 02:59:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:46,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:47,364 INFO 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 02:59:47,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:47,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133979828] [2024-06-28 02:59:47,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133979828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:47,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:47,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:47,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601739380] [2024-06-28 02:59:47,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:47,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:47,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:47,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:47,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:47,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:47,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 607 transitions, 8401 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 02:59:47,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:47,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:47,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:48,866 INFO L124 PetriNetUnfolderBase]: 4028/6190 cut-off events. [2024-06-28 02:59:48,866 INFO L125 PetriNetUnfolderBase]: For 508250/508263 co-relation queries the response was YES. [2024-06-28 02:59:48,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55926 conditions, 6190 events. 4028/6190 cut-off events. For 508250/508263 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 34855 event pairs, 1322 based on Foata normal form. 2/6167 useless extension candidates. Maximal degree in co-relation 55810. Up to 5755 conditions per place. [2024-06-28 02:59:48,928 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 579 selfloop transitions, 52 changer transitions 0/640 dead transitions. [2024-06-28 02:59:48,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 640 transitions, 9955 flow [2024-06-28 02:59:48,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:48,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:48,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 02:59:48,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43669250645994834 [2024-06-28 02:59:48,930 INFO L175 Difference]: Start difference. First operand has 265 places, 607 transitions, 8401 flow. Second operand 9 states and 169 transitions. [2024-06-28 02:59:48,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 640 transitions, 9955 flow [2024-06-28 02:59:49,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 640 transitions, 9904 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 02:59:49,763 INFO L231 Difference]: Finished difference. Result has 272 places, 610 transitions, 8563 flow [2024-06-28 02:59:49,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8350, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8563, PETRI_PLACES=272, PETRI_TRANSITIONS=610} [2024-06-28 02:59:49,763 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 228 predicate places. [2024-06-28 02:59:49,763 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 610 transitions, 8563 flow [2024-06-28 02:59:49,764 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 02:59:49,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:49,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:49,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:59:49,764 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:49,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:49,764 INFO L85 PathProgramCache]: Analyzing trace with hash -629011136, now seen corresponding path program 11 times [2024-06-28 02:59:49,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:49,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686403830] [2024-06-28 02:59:49,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:49,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:50,670 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 02:59:50,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:50,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686403830] [2024-06-28 02:59:50,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686403830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:50,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:50,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:50,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729561741] [2024-06-28 02:59:50,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:50,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:50,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:50,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:50,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:50,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:50,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 610 transitions, 8563 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 02:59:50,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:50,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:50,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:52,330 INFO L124 PetriNetUnfolderBase]: 4064/6248 cut-off events. [2024-06-28 02:59:52,330 INFO L125 PetriNetUnfolderBase]: For 533583/533596 co-relation queries the response was YES. [2024-06-28 02:59:52,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56748 conditions, 6248 events. 4064/6248 cut-off events. For 533583/533596 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 35229 event pairs, 1324 based on Foata normal form. 6/6229 useless extension candidates. Maximal degree in co-relation 56629. Up to 5559 conditions per place. [2024-06-28 02:59:52,406 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 569 selfloop transitions, 93 changer transitions 0/671 dead transitions. [2024-06-28 02:59:52,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 671 transitions, 10901 flow [2024-06-28 02:59:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:52,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 02:59:52,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46770025839793283 [2024-06-28 02:59:52,408 INFO L175 Difference]: Start difference. First operand has 272 places, 610 transitions, 8563 flow. Second operand 9 states and 181 transitions. [2024-06-28 02:59:52,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 671 transitions, 10901 flow [2024-06-28 02:59:53,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 671 transitions, 10720 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 02:59:53,245 INFO L231 Difference]: Finished difference. Result has 274 places, 618 transitions, 8782 flow [2024-06-28 02:59:53,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8382, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8782, PETRI_PLACES=274, PETRI_TRANSITIONS=618} [2024-06-28 02:59:53,248 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 230 predicate places. [2024-06-28 02:59:53,248 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 618 transitions, 8782 flow [2024-06-28 02:59:53,248 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 02:59:53,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:53,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:53,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:59:53,249 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:53,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1629666520, now seen corresponding path program 12 times [2024-06-28 02:59:53,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:53,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704617679] [2024-06-28 02:59:53,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:53,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:54,142 INFO 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 02:59:54,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:54,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704617679] [2024-06-28 02:59:54,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704617679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:54,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:54,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:54,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753373500] [2024-06-28 02:59:54,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:54,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:54,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:54,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:54,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:54,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:59:54,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 618 transitions, 8782 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 02:59:54,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:54,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:59:54,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:55,603 INFO L124 PetriNetUnfolderBase]: 4100/6306 cut-off events. [2024-06-28 02:59:55,604 INFO L125 PetriNetUnfolderBase]: For 555425/555438 co-relation queries the response was YES. [2024-06-28 02:59:55,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57741 conditions, 6306 events. 4100/6306 cut-off events. For 555425/555438 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 35772 event pairs, 1326 based on Foata normal form. 6/6287 useless extension candidates. Maximal degree in co-relation 57621. Up to 5893 conditions per place. [2024-06-28 02:59:55,674 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 618 selfloop transitions, 31 changer transitions 0/658 dead transitions. [2024-06-28 02:59:55,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 658 transitions, 10527 flow [2024-06-28 02:59:55,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:55,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:55,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 02:59:55,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315245478036176 [2024-06-28 02:59:55,675 INFO L175 Difference]: Start difference. First operand has 274 places, 618 transitions, 8782 flow. Second operand 9 states and 167 transitions. [2024-06-28 02:59:55,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 658 transitions, 10527 flow [2024-06-28 02:59:56,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 658 transitions, 10278 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-28 02:59:56,803 INFO L231 Difference]: Finished difference. Result has 278 places, 626 transitions, 8880 flow [2024-06-28 02:59:56,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8541, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8880, PETRI_PLACES=278, PETRI_TRANSITIONS=626} [2024-06-28 02:59:56,804 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 234 predicate places. [2024-06-28 02:59:56,804 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 626 transitions, 8880 flow [2024-06-28 02:59:56,804 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 02:59:56,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:59:56,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:59:56,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:59:56,805 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:59:56,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:59:56,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1393306710, now seen corresponding path program 10 times [2024-06-28 02:59:56,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:59:56,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364422387] [2024-06-28 02:59:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:59:56,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:59:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:59:58,121 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 02:59:58,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:59:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364422387] [2024-06-28 02:59:58,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364422387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:59:58,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:59:58,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:59:58,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134071638] [2024-06-28 02:59:58,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:59:58,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:59:58,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:59:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:59:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:59:58,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 02:59:58,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 626 transitions, 8880 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 02:59:58,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:59:58,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 02:59:58,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:59:59,704 INFO L124 PetriNetUnfolderBase]: 3916/6110 cut-off events. [2024-06-28 02:59:59,704 INFO L125 PetriNetUnfolderBase]: For 569887/569908 co-relation queries the response was YES. [2024-06-28 02:59:59,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56315 conditions, 6110 events. 3916/6110 cut-off events. For 569887/569908 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 35397 event pairs, 1249 based on Foata normal form. 6/6072 useless extension candidates. Maximal degree in co-relation 56194. Up to 5486 conditions per place. [2024-06-28 02:59:59,775 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 565 selfloop transitions, 26 changer transitions 0/655 dead transitions. [2024-06-28 02:59:59,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 655 transitions, 10284 flow [2024-06-28 02:59:59,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:59:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:59:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 02:59:59,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2024-06-28 02:59:59,776 INFO L175 Difference]: Start difference. First operand has 278 places, 626 transitions, 8880 flow. Second operand 9 states and 173 transitions. [2024-06-28 02:59:59,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 655 transitions, 10284 flow [2024-06-28 03:00:00,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 655 transitions, 10065 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-06-28 03:00:00,562 INFO L231 Difference]: Finished difference. Result has 280 places, 628 transitions, 8802 flow [2024-06-28 03:00:00,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8661, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8802, PETRI_PLACES=280, PETRI_TRANSITIONS=628} [2024-06-28 03:00:00,563 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 236 predicate places. [2024-06-28 03:00:00,563 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 628 transitions, 8802 flow [2024-06-28 03:00:00,563 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 03:00:00,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:00,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:00,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:00:00,564 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:00,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:00,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1393306834, now seen corresponding path program 13 times [2024-06-28 03:00:00,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:00,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130195582] [2024-06-28 03:00:00,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:00,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:01,789 INFO 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 03:00:01,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:01,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130195582] [2024-06-28 03:00:01,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130195582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:01,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:01,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:01,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454097455] [2024-06-28 03:00:01,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:01,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:01,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:01,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:01,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:01,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:01,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 628 transitions, 8802 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 03:00:01,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:01,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:01,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:03,310 INFO L124 PetriNetUnfolderBase]: 4103/6310 cut-off events. [2024-06-28 03:00:03,311 INFO L125 PetriNetUnfolderBase]: For 576690/576703 co-relation queries the response was YES. [2024-06-28 03:00:03,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57773 conditions, 6310 events. 4103/6310 cut-off events. For 576690/576703 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 35805 event pairs, 1324 based on Foata normal form. 2/6287 useless extension candidates. Maximal degree in co-relation 57651. Up to 5820 conditions per place. [2024-06-28 03:00:03,384 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 593 selfloop transitions, 63 changer transitions 0/665 dead transitions. [2024-06-28 03:00:03,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 665 transitions, 10630 flow [2024-06-28 03:00:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 03:00:03,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4372093023255814 [2024-06-28 03:00:03,386 INFO L175 Difference]: Start difference. First operand has 280 places, 628 transitions, 8802 flow. Second operand 10 states and 188 transitions. [2024-06-28 03:00:03,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 665 transitions, 10630 flow [2024-06-28 03:00:04,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 665 transitions, 10507 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 03:00:04,261 INFO L231 Difference]: Finished difference. Result has 283 places, 631 transitions, 8915 flow [2024-06-28 03:00:04,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8679, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8915, PETRI_PLACES=283, PETRI_TRANSITIONS=631} [2024-06-28 03:00:04,262 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 239 predicate places. [2024-06-28 03:00:04,262 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 631 transitions, 8915 flow [2024-06-28 03:00:04,262 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 03:00:04,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:04,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:04,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:00:04,263 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:04,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:04,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1621385614, now seen corresponding path program 14 times [2024-06-28 03:00:04,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:04,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348257127] [2024-06-28 03:00:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:04,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:05,262 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 03:00:05,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:05,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348257127] [2024-06-28 03:00:05,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348257127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:05,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:05,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:05,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096832747] [2024-06-28 03:00:05,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:05,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:05,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:05,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:05,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:05,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:05,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 631 transitions, 8915 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 03:00:05,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:05,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:05,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:06,863 INFO L124 PetriNetUnfolderBase]: 4098/6298 cut-off events. [2024-06-28 03:00:06,863 INFO L125 PetriNetUnfolderBase]: For 589743/589756 co-relation queries the response was YES. [2024-06-28 03:00:06,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57825 conditions, 6298 events. 4098/6298 cut-off events. For 589743/589756 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 35705 event pairs, 1322 based on Foata normal form. 2/6275 useless extension candidates. Maximal degree in co-relation 57702. Up to 5923 conditions per place. [2024-06-28 03:00:06,940 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 621 selfloop transitions, 27 changer transitions 0/657 dead transitions. [2024-06-28 03:00:06,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 657 transitions, 10349 flow [2024-06-28 03:00:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:00:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:00:06,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:00:06,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-28 03:00:06,941 INFO L175 Difference]: Start difference. First operand has 283 places, 631 transitions, 8915 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:00:06,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 657 transitions, 10349 flow [2024-06-28 03:00:07,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 657 transitions, 9955 flow, removed 83 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:07,996 INFO L231 Difference]: Finished difference. Result has 284 places, 631 transitions, 8584 flow [2024-06-28 03:00:07,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8521, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8584, PETRI_PLACES=284, PETRI_TRANSITIONS=631} [2024-06-28 03:00:07,997 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 240 predicate places. [2024-06-28 03:00:07,997 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 631 transitions, 8584 flow [2024-06-28 03:00:07,997 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 03:00:07,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:07,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:07,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:00:07,997 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:07,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:07,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1621392310, now seen corresponding path program 13 times [2024-06-28 03:00:07,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:07,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780715551] [2024-06-28 03:00:07,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:07,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:08,881 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 03:00:08,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:08,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780715551] [2024-06-28 03:00:08,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780715551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:08,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:08,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:08,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758021868] [2024-06-28 03:00:08,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:08,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:08,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:08,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:08,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:08,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:08,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 631 transitions, 8584 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 03:00:08,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:08,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:08,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:10,460 INFO L124 PetriNetUnfolderBase]: 4134/6356 cut-off events. [2024-06-28 03:00:10,461 INFO L125 PetriNetUnfolderBase]: For 616440/616453 co-relation queries the response was YES. [2024-06-28 03:00:10,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57998 conditions, 6356 events. 4134/6356 cut-off events. For 616440/616453 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 36056 event pairs, 1326 based on Foata normal form. 6/6337 useless extension candidates. Maximal degree in co-relation 57875. Up to 5816 conditions per place. [2024-06-28 03:00:10,533 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 612 selfloop transitions, 61 changer transitions 0/682 dead transitions. [2024-06-28 03:00:10,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 682 transitions, 10712 flow [2024-06-28 03:00:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:00:10,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:00:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:00:10,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 03:00:10,535 INFO L175 Difference]: Start difference. First operand has 284 places, 631 transitions, 8584 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:00:10,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 682 transitions, 10712 flow [2024-06-28 03:00:11,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 682 transitions, 10638 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:11,599 INFO L231 Difference]: Finished difference. Result has 285 places, 639 transitions, 8909 flow [2024-06-28 03:00:11,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8510, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8909, PETRI_PLACES=285, PETRI_TRANSITIONS=639} [2024-06-28 03:00:11,599 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 241 predicate places. [2024-06-28 03:00:11,599 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 639 transitions, 8909 flow [2024-06-28 03:00:11,600 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 03:00:11,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:11,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:11,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:00:11,600 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:11,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1621385800, now seen corresponding path program 14 times [2024-06-28 03:00:11,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:11,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884285063] [2024-06-28 03:00:11,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:11,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:12,550 INFO 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 03:00:12,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:12,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884285063] [2024-06-28 03:00:12,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884285063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:12,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:12,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:12,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092984555] [2024-06-28 03:00:12,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:12,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:12,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:12,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:12,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:12,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:12,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 639 transitions, 8909 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 03:00:12,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:12,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:12,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:14,179 INFO L124 PetriNetUnfolderBase]: 4118/6334 cut-off events. [2024-06-28 03:00:14,179 INFO L125 PetriNetUnfolderBase]: For 625879/625892 co-relation queries the response was YES. [2024-06-28 03:00:14,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57855 conditions, 6334 events. 4118/6334 cut-off events. For 625879/625892 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 35953 event pairs, 1323 based on Foata normal form. 6/6315 useless extension candidates. Maximal degree in co-relation 57731. Up to 5803 conditions per place. [2024-06-28 03:00:14,244 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 603 selfloop transitions, 64 changer transitions 0/676 dead transitions. [2024-06-28 03:00:14,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 676 transitions, 10492 flow [2024-06-28 03:00:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:00:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:00:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 03:00:14,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 03:00:14,248 INFO L175 Difference]: Start difference. First operand has 285 places, 639 transitions, 8909 flow. Second operand 9 states and 171 transitions. [2024-06-28 03:00:14,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 676 transitions, 10492 flow [2024-06-28 03:00:15,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 676 transitions, 9937 flow, removed 179 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:15,072 INFO L231 Difference]: Finished difference. Result has 286 places, 639 transitions, 8496 flow [2024-06-28 03:00:15,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8354, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8496, PETRI_PLACES=286, PETRI_TRANSITIONS=639} [2024-06-28 03:00:15,073 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 242 predicate places. [2024-06-28 03:00:15,073 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 639 transitions, 8496 flow [2024-06-28 03:00:15,074 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 03:00:15,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:15,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:15,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:00:15,082 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:15,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:15,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1393311670, now seen corresponding path program 15 times [2024-06-28 03:00:15,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:15,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337688227] [2024-06-28 03:00:15,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:15,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:16,191 INFO 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 03:00:16,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:16,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337688227] [2024-06-28 03:00:16,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337688227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:16,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:16,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:16,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178578134] [2024-06-28 03:00:16,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:16,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:16,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:16,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:16,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:16,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:16,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 639 transitions, 8496 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 03:00:16,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:16,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:16,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:17,777 INFO L124 PetriNetUnfolderBase]: 4102/6309 cut-off events. [2024-06-28 03:00:17,777 INFO L125 PetriNetUnfolderBase]: For 625513/625526 co-relation queries the response was YES. [2024-06-28 03:00:17,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57057 conditions, 6309 events. 4102/6309 cut-off events. For 625513/625526 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 35760 event pairs, 1314 based on Foata normal form. 6/6290 useless extension candidates. Maximal degree in co-relation 56932. Up to 5594 conditions per place. [2024-06-28 03:00:17,836 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 551 selfloop transitions, 118 changer transitions 0/678 dead transitions. [2024-06-28 03:00:17,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 678 transitions, 10115 flow [2024-06-28 03:00:17,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:00:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:00:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 03:00:17,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-28 03:00:17,838 INFO L175 Difference]: Start difference. First operand has 286 places, 639 transitions, 8496 flow. Second operand 10 states and 185 transitions. [2024-06-28 03:00:17,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 678 transitions, 10115 flow [2024-06-28 03:00:18,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 678 transitions, 9847 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:18,590 INFO L231 Difference]: Finished difference. Result has 288 places, 639 transitions, 8478 flow [2024-06-28 03:00:18,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8228, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8478, PETRI_PLACES=288, PETRI_TRANSITIONS=639} [2024-06-28 03:00:18,593 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 244 predicate places. [2024-06-28 03:00:18,593 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 639 transitions, 8478 flow [2024-06-28 03:00:18,594 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 03:00:18,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:18,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:18,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:00:18,594 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:18,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash 547547938, now seen corresponding path program 3 times [2024-06-28 03:00:18,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:18,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661268543] [2024-06-28 03:00:18,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:18,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:19,445 INFO 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 03:00:19,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:19,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661268543] [2024-06-28 03:00:19,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661268543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:19,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:19,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:00:19,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195004641] [2024-06-28 03:00:19,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:19,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:00:19,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:19,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:00:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:00:19,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:19,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 639 transitions, 8478 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:19,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:19,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:19,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:20,956 INFO L124 PetriNetUnfolderBase]: 4461/6830 cut-off events. [2024-06-28 03:00:20,956 INFO L125 PetriNetUnfolderBase]: For 698429/698501 co-relation queries the response was YES. [2024-06-28 03:00:21,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61354 conditions, 6830 events. 4461/6830 cut-off events. For 698429/698501 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 38361 event pairs, 1609 based on Foata normal form. 31/6798 useless extension candidates. Maximal degree in co-relation 61228. Up to 6299 conditions per place. [2024-06-28 03:00:21,042 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 543 selfloop transitions, 12 changer transitions 0/647 dead transitions. [2024-06-28 03:00:21,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 647 transitions, 9620 flow [2024-06-28 03:00:21,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:00:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:00:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 03:00:21,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41472868217054265 [2024-06-28 03:00:21,043 INFO L175 Difference]: Start difference. First operand has 288 places, 639 transitions, 8478 flow. Second operand 6 states and 107 transitions. [2024-06-28 03:00:21,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 647 transitions, 9620 flow [2024-06-28 03:00:22,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 647 transitions, 9302 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:00:22,085 INFO L231 Difference]: Finished difference. Result has 284 places, 639 transitions, 8190 flow [2024-06-28 03:00:22,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8160, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8190, PETRI_PLACES=284, PETRI_TRANSITIONS=639} [2024-06-28 03:00:22,086 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 240 predicate places. [2024-06-28 03:00:22,086 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 639 transitions, 8190 flow [2024-06-28 03:00:22,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:22,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:22,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:22,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:00:22,087 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:22,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:22,087 INFO L85 PathProgramCache]: Analyzing trace with hash 96645250, now seen corresponding path program 1 times [2024-06-28 03:00:22,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:22,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611326382] [2024-06-28 03:00:22,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:22,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:22,714 INFO 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 03:00:22,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:22,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611326382] [2024-06-28 03:00:22,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611326382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:22,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:22,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:00:22,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633567230] [2024-06-28 03:00:22,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:22,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:00:22,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:22,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:00:22,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:00:22,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:00:22,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 639 transitions, 8190 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:22,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:22,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:00:22,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:24,224 INFO L124 PetriNetUnfolderBase]: 4771/7199 cut-off events. [2024-06-28 03:00:24,224 INFO L125 PetriNetUnfolderBase]: For 688685/688690 co-relation queries the response was YES. [2024-06-28 03:00:24,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62830 conditions, 7199 events. 4771/7199 cut-off events. For 688685/688690 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 39365 event pairs, 1691 based on Foata normal form. 3/7188 useless extension candidates. Maximal degree in co-relation 62703. Up to 6818 conditions per place. [2024-06-28 03:00:24,304 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 581 selfloop transitions, 17 changer transitions 0/657 dead transitions. [2024-06-28 03:00:24,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 657 transitions, 9648 flow [2024-06-28 03:00:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:00:24,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:00:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 03:00:24,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-28 03:00:24,306 INFO L175 Difference]: Start difference. First operand has 284 places, 639 transitions, 8190 flow. Second operand 6 states and 108 transitions. [2024-06-28 03:00:24,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 657 transitions, 9648 flow [2024-06-28 03:00:25,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 657 transitions, 9587 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:00:25,407 INFO L231 Difference]: Finished difference. Result has 285 places, 645 transitions, 8259 flow [2024-06-28 03:00:25,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8129, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8259, PETRI_PLACES=285, PETRI_TRANSITIONS=645} [2024-06-28 03:00:25,408 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 241 predicate places. [2024-06-28 03:00:25,408 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 645 transitions, 8259 flow [2024-06-28 03:00:25,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:25,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:25,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:25,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:00:25,409 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:25,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1072164490, now seen corresponding path program 1 times [2024-06-28 03:00:25,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:25,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097737851] [2024-06-28 03:00:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:25,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:26,782 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 03:00:26,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:26,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097737851] [2024-06-28 03:00:26,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097737851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:26,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:26,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:00:26,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318826161] [2024-06-28 03:00:26,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:26,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:00:26,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:26,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:00:26,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:00:26,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:00:26,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 645 transitions, 8259 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 03:00:26,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:26,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:00:26,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:28,671 INFO L124 PetriNetUnfolderBase]: 4787/7209 cut-off events. [2024-06-28 03:00:28,671 INFO L125 PetriNetUnfolderBase]: For 731913/731948 co-relation queries the response was YES. [2024-06-28 03:00:28,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64168 conditions, 7209 events. 4787/7209 cut-off events. For 731913/731948 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 39536 event pairs, 1601 based on Foata normal form. 4/7176 useless extension candidates. Maximal degree in co-relation 64040. Up to 6898 conditions per place. [2024-06-28 03:00:28,755 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 645 selfloop transitions, 22 changer transitions 0/677 dead transitions. [2024-06-28 03:00:28,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 677 transitions, 9833 flow [2024-06-28 03:00:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:00:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:00:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:00:28,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082687338501292 [2024-06-28 03:00:28,757 INFO L175 Difference]: Start difference. First operand has 285 places, 645 transitions, 8259 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:00:28,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 677 transitions, 9833 flow [2024-06-28 03:00:29,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 677 transitions, 9774 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-28 03:00:29,963 INFO L231 Difference]: Finished difference. Result has 293 places, 650 transitions, 8361 flow [2024-06-28 03:00:29,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8202, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8361, PETRI_PLACES=293, PETRI_TRANSITIONS=650} [2024-06-28 03:00:29,963 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 249 predicate places. [2024-06-28 03:00:29,963 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 650 transitions, 8361 flow [2024-06-28 03:00:29,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 03:00:29,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:29,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:29,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:00:29,964 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:29,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:29,964 INFO L85 PathProgramCache]: Analyzing trace with hash 547553890, now seen corresponding path program 2 times [2024-06-28 03:00:29,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:29,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239663676] [2024-06-28 03:00:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:29,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:30,580 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 03:00:30,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:30,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239663676] [2024-06-28 03:00:30,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239663676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:30,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:30,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:00:30,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293490489] [2024-06-28 03:00:30,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:30,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:00:30,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:30,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:00:30,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:00:30,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:00:30,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 650 transitions, 8361 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:30,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:30,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:00:30,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:32,182 INFO L124 PetriNetUnfolderBase]: 4760/7184 cut-off events. [2024-06-28 03:00:32,182 INFO L125 PetriNetUnfolderBase]: For 717860/717867 co-relation queries the response was YES. [2024-06-28 03:00:32,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63612 conditions, 7184 events. 4760/7184 cut-off events. For 717860/717867 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 39302 event pairs, 1665 based on Foata normal form. 5/7175 useless extension candidates. Maximal degree in co-relation 63481. Up to 6803 conditions per place. [2024-06-28 03:00:32,262 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 582 selfloop transitions, 17 changer transitions 0/658 dead transitions. [2024-06-28 03:00:32,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 658 transitions, 9591 flow [2024-06-28 03:00:32,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:00:32,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:00:32,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 03:00:32,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40310077519379844 [2024-06-28 03:00:32,263 INFO L175 Difference]: Start difference. First operand has 293 places, 650 transitions, 8361 flow. Second operand 6 states and 104 transitions. [2024-06-28 03:00:32,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 658 transitions, 9591 flow [2024-06-28 03:00:33,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 658 transitions, 9462 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 03:00:33,367 INFO L231 Difference]: Finished difference. Result has 293 places, 650 transitions, 8272 flow [2024-06-28 03:00:33,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8232, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8272, PETRI_PLACES=293, PETRI_TRANSITIONS=650} [2024-06-28 03:00:33,368 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 249 predicate places. [2024-06-28 03:00:33,368 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 650 transitions, 8272 flow [2024-06-28 03:00:33,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:00:33,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:33,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:33,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:00:33,369 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:33,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1442985804, now seen corresponding path program 1 times [2024-06-28 03:00:33,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:33,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772784253] [2024-06-28 03:00:33,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:33,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:34,170 INFO 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 03:00:34,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:34,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772784253] [2024-06-28 03:00:34,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772784253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:34,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:34,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:34,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12077089] [2024-06-28 03:00:34,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:34,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:34,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:34,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:34,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:34,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:34,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 650 transitions, 8272 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 03:00:34,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:34,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:34,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:36,047 INFO L124 PetriNetUnfolderBase]: 4430/6761 cut-off events. [2024-06-28 03:00:36,048 INFO L125 PetriNetUnfolderBase]: For 816012/816089 co-relation queries the response was YES. [2024-06-28 03:00:36,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63481 conditions, 6761 events. 4430/6761 cut-off events. For 816012/816089 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 38261 event pairs, 848 based on Foata normal form. 10/6707 useless extension candidates. Maximal degree in co-relation 63349. Up to 5377 conditions per place. [2024-06-28 03:00:36,121 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 509 selfloop transitions, 181 changer transitions 0/702 dead transitions. [2024-06-28 03:00:36,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 702 transitions, 10444 flow [2024-06-28 03:00:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:00:36,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:00:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-28 03:00:36,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45665961945031713 [2024-06-28 03:00:36,122 INFO L175 Difference]: Start difference. First operand has 293 places, 650 transitions, 8272 flow. Second operand 11 states and 216 transitions. [2024-06-28 03:00:36,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 702 transitions, 10444 flow [2024-06-28 03:00:37,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 702 transitions, 10398 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:00:37,084 INFO L231 Difference]: Finished difference. Result has 300 places, 657 transitions, 8874 flow [2024-06-28 03:00:37,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8226, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8874, PETRI_PLACES=300, PETRI_TRANSITIONS=657} [2024-06-28 03:00:37,084 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 256 predicate places. [2024-06-28 03:00:37,085 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 657 transitions, 8874 flow [2024-06-28 03:00:37,085 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 03:00:37,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:37,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:37,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:00:37,085 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:37,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:37,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1269369125, now seen corresponding path program 3 times [2024-06-28 03:00:37,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:37,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82342249] [2024-06-28 03:00:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:37,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:37,923 INFO 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 03:00:37,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:37,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82342249] [2024-06-28 03:00:37,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82342249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:37,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:37,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:37,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890336070] [2024-06-28 03:00:37,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:37,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:37,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:37,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:37,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:38,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:38,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 657 transitions, 8874 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 03:00:38,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:38,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:38,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:40,015 INFO L124 PetriNetUnfolderBase]: 4518/6934 cut-off events. [2024-06-28 03:00:40,015 INFO L125 PetriNetUnfolderBase]: For 834213/834235 co-relation queries the response was YES. [2024-06-28 03:00:40,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65932 conditions, 6934 events. 4518/6934 cut-off events. For 834213/834235 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 39572 event pairs, 1035 based on Foata normal form. 6/6894 useless extension candidates. Maximal degree in co-relation 65798. Up to 5817 conditions per place. [2024-06-28 03:00:40,086 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 520 selfloop transitions, 192 changer transitions 0/724 dead transitions. [2024-06-28 03:00:40,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 724 transitions, 11285 flow [2024-06-28 03:00:40,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:40,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:40,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2024-06-28 03:00:40,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-06-28 03:00:40,087 INFO L175 Difference]: Start difference. First operand has 300 places, 657 transitions, 8874 flow. Second operand 12 states and 238 transitions. [2024-06-28 03:00:40,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 724 transitions, 11285 flow [2024-06-28 03:00:41,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 724 transitions, 10989 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-06-28 03:00:41,180 INFO L231 Difference]: Finished difference. Result has 307 places, 677 transitions, 9431 flow [2024-06-28 03:00:41,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8592, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9431, PETRI_PLACES=307, PETRI_TRANSITIONS=677} [2024-06-28 03:00:41,180 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 263 predicate places. [2024-06-28 03:00:41,180 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 677 transitions, 9431 flow [2024-06-28 03:00:41,181 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 03:00:41,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:41,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:41,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:00:41,181 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:41,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:41,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1328921830, now seen corresponding path program 2 times [2024-06-28 03:00:41,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:41,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854967503] [2024-06-28 03:00:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:41,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:00:42,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:42,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854967503] [2024-06-28 03:00:42,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854967503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:42,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:42,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:42,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768984475] [2024-06-28 03:00:42,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:42,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:42,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:42,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:42,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:42,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:42,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 677 transitions, 9431 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 03:00:42,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:42,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:42,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:44,064 INFO L124 PetriNetUnfolderBase]: 4598/7048 cut-off events. [2024-06-28 03:00:44,065 INFO L125 PetriNetUnfolderBase]: For 878083/878134 co-relation queries the response was YES. [2024-06-28 03:00:44,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68357 conditions, 7048 events. 4598/7048 cut-off events. For 878083/878134 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 40440 event pairs, 1067 based on Foata normal form. 12/7009 useless extension candidates. Maximal degree in co-relation 68220. Up to 5952 conditions per place. [2024-06-28 03:00:44,136 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 543 selfloop transitions, 180 changer transitions 0/735 dead transitions. [2024-06-28 03:00:44,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 735 transitions, 11557 flow [2024-06-28 03:00:44,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 234 transitions. [2024-06-28 03:00:44,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-28 03:00:44,138 INFO L175 Difference]: Start difference. First operand has 307 places, 677 transitions, 9431 flow. Second operand 12 states and 234 transitions. [2024-06-28 03:00:44,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 735 transitions, 11557 flow [2024-06-28 03:00:45,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 735 transitions, 11375 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 03:00:45,544 INFO L231 Difference]: Finished difference. Result has 313 places, 687 transitions, 9857 flow [2024-06-28 03:00:45,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9249, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9857, PETRI_PLACES=313, PETRI_TRANSITIONS=687} [2024-06-28 03:00:45,545 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 269 predicate places. [2024-06-28 03:00:45,545 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 687 transitions, 9857 flow [2024-06-28 03:00:45,545 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 03:00:45,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:45,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:45,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:00:45,546 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:45,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:45,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1764958836, now seen corresponding path program 3 times [2024-06-28 03:00:45,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:45,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940413195] [2024-06-28 03:00:45,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:45,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:46,426 INFO 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 03:00:46,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:46,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940413195] [2024-06-28 03:00:46,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940413195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:46,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:46,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:46,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408970293] [2024-06-28 03:00:46,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:46,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:46,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:46,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:46,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:46,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:46,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 687 transitions, 9857 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 03:00:46,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:46,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:46,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:48,588 INFO L124 PetriNetUnfolderBase]: 4642/7124 cut-off events. [2024-06-28 03:00:48,588 INFO L125 PetriNetUnfolderBase]: For 909628/909674 co-relation queries the response was YES. [2024-06-28 03:00:48,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69875 conditions, 7124 events. 4642/7124 cut-off events. For 909628/909674 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 41073 event pairs, 1119 based on Foata normal form. 8/7081 useless extension candidates. Maximal degree in co-relation 69736. Up to 6206 conditions per place. [2024-06-28 03:00:48,663 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 560 selfloop transitions, 165 changer transitions 0/737 dead transitions. [2024-06-28 03:00:48,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 737 transitions, 11924 flow [2024-06-28 03:00:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:48,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:48,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 232 transitions. [2024-06-28 03:00:48,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 03:00:48,664 INFO L175 Difference]: Start difference. First operand has 313 places, 687 transitions, 9857 flow. Second operand 12 states and 232 transitions. [2024-06-28 03:00:48,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 737 transitions, 11924 flow [2024-06-28 03:00:49,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 737 transitions, 11646 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:49,782 INFO L231 Difference]: Finished difference. Result has 317 places, 693 transitions, 10096 flow [2024-06-28 03:00:49,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9579, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10096, PETRI_PLACES=317, PETRI_TRANSITIONS=693} [2024-06-28 03:00:49,782 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 273 predicate places. [2024-06-28 03:00:49,782 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 693 transitions, 10096 flow [2024-06-28 03:00:49,783 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 03:00:49,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:49,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:49,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:00:49,783 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:49,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:49,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1310957020, now seen corresponding path program 4 times [2024-06-28 03:00:49,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:49,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144222406] [2024-06-28 03:00:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:49,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:50,652 INFO 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 03:00:50,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:50,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144222406] [2024-06-28 03:00:50,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144222406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:50,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:50,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:00:50,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921006966] [2024-06-28 03:00:50,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:50,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:00:50,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:50,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:00:50,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:00:50,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:50,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 693 transitions, 10096 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 03:00:50,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:50,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:50,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:52,875 INFO L124 PetriNetUnfolderBase]: 4629/7107 cut-off events. [2024-06-28 03:00:52,875 INFO L125 PetriNetUnfolderBase]: For 919891/919937 co-relation queries the response was YES. [2024-06-28 03:00:52,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69971 conditions, 7107 events. 4629/7107 cut-off events. For 919891/919937 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 40943 event pairs, 1139 based on Foata normal form. 8/7064 useless extension candidates. Maximal degree in co-relation 69830. Up to 6281 conditions per place. [2024-06-28 03:00:52,947 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 559 selfloop transitions, 162 changer transitions 0/733 dead transitions. [2024-06-28 03:00:52,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 733 transitions, 11719 flow [2024-06-28 03:00:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 229 transitions. [2024-06-28 03:00:52,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4437984496124031 [2024-06-28 03:00:52,949 INFO L175 Difference]: Start difference. First operand has 317 places, 693 transitions, 10096 flow. Second operand 12 states and 229 transitions. [2024-06-28 03:00:52,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 733 transitions, 11719 flow [2024-06-28 03:00:54,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 733 transitions, 11368 flow, removed 86 selfloop flow, removed 8 redundant places. [2024-06-28 03:00:54,013 INFO L231 Difference]: Finished difference. Result has 321 places, 693 transitions, 10083 flow [2024-06-28 03:00:54,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9745, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10083, PETRI_PLACES=321, PETRI_TRANSITIONS=693} [2024-06-28 03:00:54,013 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 277 predicate places. [2024-06-28 03:00:54,013 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 693 transitions, 10083 flow [2024-06-28 03:00:54,014 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 03:00:54,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:54,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:54,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:00:54,014 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:54,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:54,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1547084916, now seen corresponding path program 5 times [2024-06-28 03:00:54,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:54,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460261366] [2024-06-28 03:00:54,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:54,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:00:55,215 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 03:00:55,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:00:55,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460261366] [2024-06-28 03:00:55,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460261366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:00:55,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:00:55,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:00:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234269837] [2024-06-28 03:00:55,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:00:55,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:00:55,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:00:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:00:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:00:55,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:00:55,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 693 transitions, 10083 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 03:00:55,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:00:55,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:00:55,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:00:57,482 INFO L124 PetriNetUnfolderBase]: 4746/7286 cut-off events. [2024-06-28 03:00:57,482 INFO L125 PetriNetUnfolderBase]: For 943183/943236 co-relation queries the response was YES. [2024-06-28 03:00:57,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71908 conditions, 7286 events. 4746/7286 cut-off events. For 943183/943236 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 42095 event pairs, 1126 based on Foata normal form. 8/7256 useless extension candidates. Maximal degree in co-relation 71765. Up to 6376 conditions per place. [2024-06-28 03:00:57,563 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 613 selfloop transitions, 135 changer transitions 0/760 dead transitions. [2024-06-28 03:00:57,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 760 transitions, 12435 flow [2024-06-28 03:00:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:00:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:00:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 232 transitions. [2024-06-28 03:00:57,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 03:00:57,565 INFO L175 Difference]: Start difference. First operand has 321 places, 693 transitions, 10083 flow. Second operand 12 states and 232 transitions. [2024-06-28 03:00:57,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 760 transitions, 12435 flow [2024-06-28 03:00:58,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 760 transitions, 12085 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:00:58,969 INFO L231 Difference]: Finished difference. Result has 323 places, 711 transitions, 10456 flow [2024-06-28 03:00:58,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9745, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10456, PETRI_PLACES=323, PETRI_TRANSITIONS=711} [2024-06-28 03:00:58,970 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 279 predicate places. [2024-06-28 03:00:58,970 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 711 transitions, 10456 flow [2024-06-28 03:00:58,970 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 03:00:58,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:00:58,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:00:58,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:00:58,971 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:00:58,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:00:58,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1548958866, now seen corresponding path program 6 times [2024-06-28 03:00:58,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:00:58,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810408455] [2024-06-28 03:00:58,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:00:58,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:00:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:00,056 INFO 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 03:01:00,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:00,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810408455] [2024-06-28 03:01:00,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810408455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:00,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:00,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:01:00,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955144850] [2024-06-28 03:01:00,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:00,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:01:00,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:00,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:01:00,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:01:00,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:00,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 711 transitions, 10456 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 03:01:00,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:00,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:00,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:02,358 INFO L124 PetriNetUnfolderBase]: 4785/7351 cut-off events. [2024-06-28 03:01:02,358 INFO L125 PetriNetUnfolderBase]: For 977032/977085 co-relation queries the response was YES. [2024-06-28 03:01:02,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73077 conditions, 7351 events. 4785/7351 cut-off events. For 977032/977085 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 42613 event pairs, 1160 based on Foata normal form. 10/7323 useless extension candidates. Maximal degree in co-relation 72932. Up to 6567 conditions per place. [2024-06-28 03:01:02,452 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 626 selfloop transitions, 125 changer transitions 0/763 dead transitions. [2024-06-28 03:01:02,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 763 transitions, 12625 flow [2024-06-28 03:01:02,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:02,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 229 transitions. [2024-06-28 03:01:02,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4437984496124031 [2024-06-28 03:01:02,454 INFO L175 Difference]: Start difference. First operand has 323 places, 711 transitions, 10456 flow. Second operand 12 states and 229 transitions. [2024-06-28 03:01:02,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 763 transitions, 12625 flow [2024-06-28 03:01:03,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 763 transitions, 12416 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 03:01:03,952 INFO L231 Difference]: Finished difference. Result has 328 places, 717 transitions, 10707 flow [2024-06-28 03:01:03,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10247, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10707, PETRI_PLACES=328, PETRI_TRANSITIONS=717} [2024-06-28 03:01:03,952 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 284 predicate places. [2024-06-28 03:01:03,953 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 717 transitions, 10707 flow [2024-06-28 03:01:03,953 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 03:01:03,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:03,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:03,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:01:03,953 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:03,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1548962586, now seen corresponding path program 7 times [2024-06-28 03:01:03,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:03,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008132925] [2024-06-28 03:01:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:03,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:05,039 INFO 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 03:01:05,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:05,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008132925] [2024-06-28 03:01:05,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008132925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:05,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:05,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:01:05,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923889994] [2024-06-28 03:01:05,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:05,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:01:05,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:05,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:01:05,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:01:05,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:05,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 717 transitions, 10707 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 03:01:05,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:05,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:05,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:07,419 INFO L124 PetriNetUnfolderBase]: 4767/7327 cut-off events. [2024-06-28 03:01:07,419 INFO L125 PetriNetUnfolderBase]: For 981928/981981 co-relation queries the response was YES. [2024-06-28 03:01:07,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72823 conditions, 7327 events. 4767/7327 cut-off events. For 981928/981981 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 42474 event pairs, 1186 based on Foata normal form. 10/7299 useless extension candidates. Maximal degree in co-relation 72676. Up to 6671 conditions per place. [2024-06-28 03:01:07,501 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 630 selfloop transitions, 119 changer transitions 0/761 dead transitions. [2024-06-28 03:01:07,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 761 transitions, 12394 flow [2024-06-28 03:01:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:01:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:01:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 241 transitions. [2024-06-28 03:01:07,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43112701252236135 [2024-06-28 03:01:07,503 INFO L175 Difference]: Start difference. First operand has 328 places, 717 transitions, 10707 flow. Second operand 13 states and 241 transitions. [2024-06-28 03:01:07,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 761 transitions, 12394 flow [2024-06-28 03:01:09,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 761 transitions, 11886 flow, removed 129 selfloop flow, removed 10 redundant places. [2024-06-28 03:01:09,312 INFO L231 Difference]: Finished difference. Result has 331 places, 717 transitions, 10458 flow [2024-06-28 03:01:09,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10199, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10458, PETRI_PLACES=331, PETRI_TRANSITIONS=717} [2024-06-28 03:01:09,312 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 287 predicate places. [2024-06-28 03:01:09,313 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 717 transitions, 10458 flow [2024-06-28 03:01:09,313 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 03:01:09,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:09,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:09,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:01:09,313 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:09,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:09,314 INFO L85 PathProgramCache]: Analyzing trace with hash -106499363, now seen corresponding path program 4 times [2024-06-28 03:01:09,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:09,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315829945] [2024-06-28 03:01:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:09,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:10,408 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 03:01:10,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:10,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315829945] [2024-06-28 03:01:10,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315829945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:10,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:10,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:01:10,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886830897] [2024-06-28 03:01:10,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:10,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:01:10,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:10,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:01:10,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:01:10,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:10,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 717 transitions, 10458 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 03:01:10,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:10,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:10,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:12,735 INFO L124 PetriNetUnfolderBase]: 4822/7409 cut-off events. [2024-06-28 03:01:12,735 INFO L125 PetriNetUnfolderBase]: For 1007361/1007419 co-relation queries the response was YES. [2024-06-28 03:01:12,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73794 conditions, 7409 events. 4822/7409 cut-off events. For 1007361/1007419 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 43062 event pairs, 1170 based on Foata normal form. 8/7382 useless extension candidates. Maximal degree in co-relation 73646. Up to 6008 conditions per place. [2024-06-28 03:01:12,816 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 486 selfloop transitions, 269 changer transitions 0/767 dead transitions. [2024-06-28 03:01:12,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 767 transitions, 12687 flow [2024-06-28 03:01:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:12,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:12,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 228 transitions. [2024-06-28 03:01:12,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4820295983086681 [2024-06-28 03:01:12,818 INFO L175 Difference]: Start difference. First operand has 331 places, 717 transitions, 10458 flow. Second operand 11 states and 228 transitions. [2024-06-28 03:01:12,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 767 transitions, 12687 flow [2024-06-28 03:01:14,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 767 transitions, 12429 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:01:14,403 INFO L231 Difference]: Finished difference. Result has 330 places, 723 transitions, 10944 flow [2024-06-28 03:01:14,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10200, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10944, PETRI_PLACES=330, PETRI_TRANSITIONS=723} [2024-06-28 03:01:14,404 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 286 predicate places. [2024-06-28 03:01:14,404 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 723 transitions, 10944 flow [2024-06-28 03:01:14,404 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 03:01:14,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:14,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:14,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:01:14,404 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:14,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:14,405 INFO L85 PathProgramCache]: Analyzing trace with hash -106499518, now seen corresponding path program 8 times [2024-06-28 03:01:14,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:14,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073457868] [2024-06-28 03:01:14,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:14,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:15,619 INFO 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 03:01:15,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:15,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073457868] [2024-06-28 03:01:15,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073457868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:15,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:15,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:01:15,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914491777] [2024-06-28 03:01:15,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:15,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:01:15,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:15,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:01:15,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:01:15,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:15,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 723 transitions, 10944 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 03:01:15,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:15,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:15,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:17,991 INFO L124 PetriNetUnfolderBase]: 4839/7443 cut-off events. [2024-06-28 03:01:17,991 INFO L125 PetriNetUnfolderBase]: For 1040607/1040665 co-relation queries the response was YES. [2024-06-28 03:01:18,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75390 conditions, 7443 events. 4839/7443 cut-off events. For 1040607/1040665 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 43304 event pairs, 1203 based on Foata normal form. 10/7416 useless extension candidates. Maximal degree in co-relation 75241. Up to 6599 conditions per place. [2024-06-28 03:01:18,070 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 576 selfloop transitions, 174 changer transitions 0/762 dead transitions. [2024-06-28 03:01:18,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 762 transitions, 12714 flow [2024-06-28 03:01:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-28 03:01:18,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:01:18,072 INFO L175 Difference]: Start difference. First operand has 330 places, 723 transitions, 10944 flow. Second operand 11 states and 215 transitions. [2024-06-28 03:01:18,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 762 transitions, 12714 flow [2024-06-28 03:01:19,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 762 transitions, 12308 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-28 03:01:19,636 INFO L231 Difference]: Finished difference. Result has 334 places, 725 transitions, 10973 flow [2024-06-28 03:01:19,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10538, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10973, PETRI_PLACES=334, PETRI_TRANSITIONS=725} [2024-06-28 03:01:19,637 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 290 predicate places. [2024-06-28 03:01:19,637 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 725 transitions, 10973 flow [2024-06-28 03:01:19,637 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 03:01:19,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:19,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:19,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:01:19,638 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:19,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash -106503238, now seen corresponding path program 9 times [2024-06-28 03:01:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:19,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568487558] [2024-06-28 03:01:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:19,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:20,908 INFO 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 03:01:20,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:20,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568487558] [2024-06-28 03:01:20,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568487558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:20,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:20,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:01:20,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960660714] [2024-06-28 03:01:20,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:20,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:01:20,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:20,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:01:20,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:01:21,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:21,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 725 transitions, 10973 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 03:01:21,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:21,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:21,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:23,444 INFO L124 PetriNetUnfolderBase]: 4881/7509 cut-off events. [2024-06-28 03:01:23,445 INFO L125 PetriNetUnfolderBase]: For 1077784/1077842 co-relation queries the response was YES. [2024-06-28 03:01:23,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76968 conditions, 7509 events. 4881/7509 cut-off events. For 1077784/1077842 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 43735 event pairs, 1200 based on Foata normal form. 10/7482 useless extension candidates. Maximal degree in co-relation 76817. Up to 6595 conditions per place. [2024-06-28 03:01:23,526 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 578 selfloop transitions, 179 changer transitions 0/769 dead transitions. [2024-06-28 03:01:23,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 769 transitions, 13133 flow [2024-06-28 03:01:23,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:23,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-28 03:01:23,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608879492600423 [2024-06-28 03:01:23,527 INFO L175 Difference]: Start difference. First operand has 334 places, 725 transitions, 10973 flow. Second operand 11 states and 218 transitions. [2024-06-28 03:01:23,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 769 transitions, 13133 flow [2024-06-28 03:01:25,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 769 transitions, 12716 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:25,060 INFO L231 Difference]: Finished difference. Result has 336 places, 729 transitions, 11085 flow [2024-06-28 03:01:25,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10556, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11085, PETRI_PLACES=336, PETRI_TRANSITIONS=729} [2024-06-28 03:01:25,061 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 292 predicate places. [2024-06-28 03:01:25,061 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 729 transitions, 11085 flow [2024-06-28 03:01:25,061 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 03:01:25,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:25,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:25,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:01:25,062 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:25,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:25,062 INFO L85 PathProgramCache]: Analyzing trace with hash -106355213, now seen corresponding path program 5 times [2024-06-28 03:01:25,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:25,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758446550] [2024-06-28 03:01:25,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:25,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:26,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:26,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758446550] [2024-06-28 03:01:26,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758446550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:26,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:26,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:01:26,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519683252] [2024-06-28 03:01:26,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:26,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:01:26,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:01:26,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:01:26,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:26,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 729 transitions, 11085 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 03:01:26,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:26,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:26,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:28,690 INFO L124 PetriNetUnfolderBase]: 4903/7534 cut-off events. [2024-06-28 03:01:28,691 INFO L125 PetriNetUnfolderBase]: For 1106080/1106138 co-relation queries the response was YES. [2024-06-28 03:01:28,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77641 conditions, 7534 events. 4903/7534 cut-off events. For 1106080/1106138 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 44029 event pairs, 1175 based on Foata normal form. 8/7507 useless extension candidates. Maximal degree in co-relation 77489. Up to 6227 conditions per place. [2024-06-28 03:01:28,966 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 504 selfloop transitions, 262 changer transitions 0/778 dead transitions. [2024-06-28 03:01:28,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 778 transitions, 12962 flow [2024-06-28 03:01:28,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:28,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 241 transitions. [2024-06-28 03:01:28,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46705426356589147 [2024-06-28 03:01:28,967 INFO L175 Difference]: Start difference. First operand has 336 places, 729 transitions, 11085 flow. Second operand 12 states and 241 transitions. [2024-06-28 03:01:28,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 778 transitions, 12962 flow [2024-06-28 03:01:30,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 778 transitions, 12653 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 03:01:30,669 INFO L231 Difference]: Finished difference. Result has 341 places, 732 transitions, 11392 flow [2024-06-28 03:01:30,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10776, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11392, PETRI_PLACES=341, PETRI_TRANSITIONS=732} [2024-06-28 03:01:30,670 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 297 predicate places. [2024-06-28 03:01:30,670 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 732 transitions, 11392 flow [2024-06-28 03:01:30,670 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 03:01:30,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:30,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:30,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:01:30,671 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:30,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:30,672 INFO L85 PathProgramCache]: Analyzing trace with hash -106355368, now seen corresponding path program 10 times [2024-06-28 03:01:30,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:30,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180480967] [2024-06-28 03:01:30,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:30,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:31,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:31,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180480967] [2024-06-28 03:01:31,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180480967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:31,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:31,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:01:31,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868071017] [2024-06-28 03:01:31,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:31,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:01:31,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:31,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:01:31,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:01:31,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:31,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 732 transitions, 11392 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 03:01:31,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:31,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:31,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:34,161 INFO L124 PetriNetUnfolderBase]: 4920/7568 cut-off events. [2024-06-28 03:01:34,161 INFO L125 PetriNetUnfolderBase]: For 1132213/1132271 co-relation queries the response was YES. [2024-06-28 03:01:34,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78833 conditions, 7568 events. 4920/7568 cut-off events. For 1132213/1132271 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 44201 event pairs, 1210 based on Foata normal form. 10/7541 useless extension candidates. Maximal degree in co-relation 78679. Up to 6757 conditions per place. [2024-06-28 03:01:34,242 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 592 selfloop transitions, 167 changer transitions 0/771 dead transitions. [2024-06-28 03:01:34,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 771 transitions, 13158 flow [2024-06-28 03:01:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 03:01:34,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452431289640592 [2024-06-28 03:01:34,243 INFO L175 Difference]: Start difference. First operand has 341 places, 732 transitions, 11392 flow. Second operand 11 states and 214 transitions. [2024-06-28 03:01:34,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 771 transitions, 13158 flow [2024-06-28 03:01:36,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 771 transitions, 12576 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-28 03:01:36,150 INFO L231 Difference]: Finished difference. Result has 342 places, 734 transitions, 11209 flow [2024-06-28 03:01:36,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10810, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11209, PETRI_PLACES=342, PETRI_TRANSITIONS=734} [2024-06-28 03:01:36,151 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 298 predicate places. [2024-06-28 03:01:36,151 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 734 transitions, 11209 flow [2024-06-28 03:01:36,151 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 03:01:36,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:36,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:36,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:01:36,152 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:36,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:36,152 INFO L85 PathProgramCache]: Analyzing trace with hash -100987253, now seen corresponding path program 6 times [2024-06-28 03:01:36,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:36,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770398870] [2024-06-28 03:01:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:36,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:37,314 INFO 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 03:01:37,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:37,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770398870] [2024-06-28 03:01:37,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770398870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:37,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:37,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:01:37,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775714188] [2024-06-28 03:01:37,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:37,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:01:37,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:37,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:01:37,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:01:37,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:37,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 734 transitions, 11209 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 03:01:37,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:37,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:37,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:39,930 INFO L124 PetriNetUnfolderBase]: 4942/7588 cut-off events. [2024-06-28 03:01:39,930 INFO L125 PetriNetUnfolderBase]: For 1158090/1158148 co-relation queries the response was YES. [2024-06-28 03:01:39,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78888 conditions, 7588 events. 4942/7588 cut-off events. For 1158090/1158148 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 44307 event pairs, 1175 based on Foata normal form. 8/7561 useless extension candidates. Maximal degree in co-relation 78733. Up to 6303 conditions per place. [2024-06-28 03:01:40,013 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 501 selfloop transitions, 266 changer transitions 0/779 dead transitions. [2024-06-28 03:01:40,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 779 transitions, 13070 flow [2024-06-28 03:01:40,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:40,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:40,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-28 03:01:40,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714587737843552 [2024-06-28 03:01:40,015 INFO L175 Difference]: Start difference. First operand has 342 places, 734 transitions, 11209 flow. Second operand 11 states and 223 transitions. [2024-06-28 03:01:40,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 779 transitions, 13070 flow [2024-06-28 03:01:42,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 779 transitions, 12693 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:42,133 INFO L231 Difference]: Finished difference. Result has 344 places, 737 transitions, 11461 flow [2024-06-28 03:01:42,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10832, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11461, PETRI_PLACES=344, PETRI_TRANSITIONS=737} [2024-06-28 03:01:42,134 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 300 predicate places. [2024-06-28 03:01:42,134 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 737 transitions, 11461 flow [2024-06-28 03:01:42,134 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 03:01:42,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:42,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:42,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:01:42,135 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:42,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:42,135 INFO L85 PathProgramCache]: Analyzing trace with hash -100785443, now seen corresponding path program 7 times [2024-06-28 03:01:42,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:42,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493143658] [2024-06-28 03:01:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:42,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:43,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:43,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493143658] [2024-06-28 03:01:43,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493143658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:43,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:43,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:01:43,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973890493] [2024-06-28 03:01:43,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:43,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:01:43,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:01:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:01:43,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:43,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 737 transitions, 11461 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 03:01:43,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:43,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:43,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:45,805 INFO L124 PetriNetUnfolderBase]: 4964/7626 cut-off events. [2024-06-28 03:01:45,805 INFO L125 PetriNetUnfolderBase]: For 1189360/1189418 co-relation queries the response was YES. [2024-06-28 03:01:45,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79991 conditions, 7626 events. 4964/7626 cut-off events. For 1189360/1189418 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 44643 event pairs, 1177 based on Foata normal form. 8/7599 useless extension candidates. Maximal degree in co-relation 79835. Up to 6335 conditions per place. [2024-06-28 03:01:45,896 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 498 selfloop transitions, 271 changer transitions 0/781 dead transitions. [2024-06-28 03:01:45,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 781 transitions, 13324 flow [2024-06-28 03:01:45,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:45,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-28 03:01:45,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46723044397463004 [2024-06-28 03:01:45,898 INFO L175 Difference]: Start difference. First operand has 344 places, 737 transitions, 11461 flow. Second operand 11 states and 221 transitions. [2024-06-28 03:01:45,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 781 transitions, 13324 flow [2024-06-28 03:01:47,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 781 transitions, 12727 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:47,581 INFO L231 Difference]: Finished difference. Result has 346 places, 740 transitions, 11509 flow [2024-06-28 03:01:47,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10864, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11509, PETRI_PLACES=346, PETRI_TRANSITIONS=740} [2024-06-28 03:01:47,582 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 302 predicate places. [2024-06-28 03:01:47,582 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 740 transitions, 11509 flow [2024-06-28 03:01:47,582 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 03:01:47,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:47,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:47,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:01:47,582 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:47,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:47,583 INFO L85 PathProgramCache]: Analyzing trace with hash -100992833, now seen corresponding path program 8 times [2024-06-28 03:01:47,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:47,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082542741] [2024-06-28 03:01:47,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:47,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:01:48,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:48,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082542741] [2024-06-28 03:01:48,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082542741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:48,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:48,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:01:48,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252217243] [2024-06-28 03:01:48,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:48,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:01:48,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:48,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:01:48,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:01:48,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:48,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 740 transitions, 11509 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 03:01:48,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:48,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:48,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:51,235 INFO L124 PetriNetUnfolderBase]: 4998/7681 cut-off events. [2024-06-28 03:01:51,235 INFO L125 PetriNetUnfolderBase]: For 1212089/1212143 co-relation queries the response was YES. [2024-06-28 03:01:51,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80542 conditions, 7681 events. 4998/7681 cut-off events. For 1212089/1212143 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 45005 event pairs, 1131 based on Foata normal form. 8/7657 useless extension candidates. Maximal degree in co-relation 80385. Up to 6308 conditions per place. [2024-06-28 03:01:51,322 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 500 selfloop transitions, 275 changer transitions 0/787 dead transitions. [2024-06-28 03:01:51,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 787 transitions, 13336 flow [2024-06-28 03:01:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:01:51,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:01:51,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 242 transitions. [2024-06-28 03:01:51,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689922480620155 [2024-06-28 03:01:51,336 INFO L175 Difference]: Start difference. First operand has 346 places, 740 transitions, 11509 flow. Second operand 12 states and 242 transitions. [2024-06-28 03:01:51,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 787 transitions, 13336 flow [2024-06-28 03:01:53,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 787 transitions, 12667 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-28 03:01:53,614 INFO L231 Difference]: Finished difference. Result has 349 places, 740 transitions, 11403 flow [2024-06-28 03:01:53,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10840, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11403, PETRI_PLACES=349, PETRI_TRANSITIONS=740} [2024-06-28 03:01:53,621 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 305 predicate places. [2024-06-28 03:01:53,621 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 740 transitions, 11403 flow [2024-06-28 03:01:53,621 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 03:01:53,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:53,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:53,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:01:53,621 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:53,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:53,622 INFO L85 PathProgramCache]: Analyzing trace with hash -100992988, now seen corresponding path program 11 times [2024-06-28 03:01:53,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:53,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764800455] [2024-06-28 03:01:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:53,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:01:54,668 INFO 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 03:01:54,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:01:54,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764800455] [2024-06-28 03:01:54,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764800455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:01:54,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:01:54,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:01:54,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69367844] [2024-06-28 03:01:54,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:01:54,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:01:54,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:01:54,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:01:54,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:01:54,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:01:54,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 740 transitions, 11403 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 03:01:54,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:01:54,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:01:54,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:01:57,101 INFO L124 PetriNetUnfolderBase]: 4946/7611 cut-off events. [2024-06-28 03:01:57,101 INFO L125 PetriNetUnfolderBase]: For 1218221/1218279 co-relation queries the response was YES. [2024-06-28 03:01:57,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79501 conditions, 7611 events. 4946/7611 cut-off events. For 1218221/1218279 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 44553 event pairs, 1211 based on Foata normal form. 10/7584 useless extension candidates. Maximal degree in co-relation 79343. Up to 6795 conditions per place. [2024-06-28 03:01:57,188 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 592 selfloop transitions, 173 changer transitions 0/777 dead transitions. [2024-06-28 03:01:57,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 777 transitions, 13127 flow [2024-06-28 03:01:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:01:57,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:01:57,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-28 03:01:57,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503171247357294 [2024-06-28 03:01:57,190 INFO L175 Difference]: Start difference. First operand has 349 places, 740 transitions, 11403 flow. Second operand 11 states and 213 transitions. [2024-06-28 03:01:57,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 777 transitions, 13127 flow [2024-06-28 03:01:59,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 777 transitions, 12491 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-28 03:01:59,219 INFO L231 Difference]: Finished difference. Result has 349 places, 740 transitions, 11120 flow [2024-06-28 03:01:59,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10767, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11120, PETRI_PLACES=349, PETRI_TRANSITIONS=740} [2024-06-28 03:01:59,227 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 305 predicate places. [2024-06-28 03:01:59,227 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 740 transitions, 11120 flow [2024-06-28 03:01:59,227 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 03:01:59,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:01:59,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:01:59,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:01:59,228 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:01:59,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:01:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash 302980738, now seen corresponding path program 12 times [2024-06-28 03:01:59,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:01:59,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424227351] [2024-06-28 03:01:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:01:59,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:01:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:00,607 INFO 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 03:02:00,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:00,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424227351] [2024-06-28 03:02:00,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424227351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:00,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:00,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:02:00,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505304264] [2024-06-28 03:02:00,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:00,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:02:00,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:00,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:02:00,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:02:00,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:00,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 740 transitions, 11120 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 03:02:00,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:00,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:00,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:02,974 INFO L124 PetriNetUnfolderBase]: 5013/7683 cut-off events. [2024-06-28 03:02:02,974 INFO L125 PetriNetUnfolderBase]: For 1292467/1292544 co-relation queries the response was YES. [2024-06-28 03:02:03,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80500 conditions, 7683 events. 5013/7683 cut-off events. For 1292467/1292544 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 45064 event pairs, 916 based on Foata normal form. 12/7630 useless extension candidates. Maximal degree in co-relation 80341. Up to 6063 conditions per place. [2024-06-28 03:02:03,070 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 527 selfloop transitions, 252 changer transitions 0/791 dead transitions. [2024-06-28 03:02:03,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 791 transitions, 13352 flow [2024-06-28 03:02:03,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:03,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-28 03:02:03,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:02:03,072 INFO L175 Difference]: Start difference. First operand has 349 places, 740 transitions, 11120 flow. Second operand 11 states and 215 transitions. [2024-06-28 03:02:03,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 791 transitions, 13352 flow [2024-06-28 03:02:05,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 791 transitions, 12987 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:02:05,648 INFO L231 Difference]: Finished difference. Result has 350 places, 744 transitions, 11415 flow [2024-06-28 03:02:05,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10755, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11415, PETRI_PLACES=350, PETRI_TRANSITIONS=744} [2024-06-28 03:02:05,651 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 306 predicate places. [2024-06-28 03:02:05,651 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 744 transitions, 11415 flow [2024-06-28 03:02:05,651 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 03:02:05,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:05,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:05,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:02:05,652 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:05,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:05,652 INFO L85 PathProgramCache]: Analyzing trace with hash 304854688, now seen corresponding path program 13 times [2024-06-28 03:02:05,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:05,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148418474] [2024-06-28 03:02:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:05,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:06,982 INFO 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 03:02:06,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:06,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148418474] [2024-06-28 03:02:06,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148418474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:06,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:06,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:02:06,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759884610] [2024-06-28 03:02:06,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:06,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:02:06,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:06,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:02:06,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:02:07,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:07,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 744 transitions, 11415 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 03:02:07,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:07,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:07,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:09,421 INFO L124 PetriNetUnfolderBase]: 5354/8266 cut-off events. [2024-06-28 03:02:09,421 INFO L125 PetriNetUnfolderBase]: For 1319935/1319981 co-relation queries the response was YES. [2024-06-28 03:02:09,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85485 conditions, 8266 events. 5354/8266 cut-off events. For 1319935/1319981 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 49693 event pairs, 1241 based on Foata normal form. 10/8225 useless extension candidates. Maximal degree in co-relation 85325. Up to 7077 conditions per place. [2024-06-28 03:02:09,536 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 616 selfloop transitions, 217 changer transitions 0/845 dead transitions. [2024-06-28 03:02:09,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 845 transitions, 14684 flow [2024-06-28 03:02:09,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:09,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:09,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-28 03:02:09,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:02:09,538 INFO L175 Difference]: Start difference. First operand has 350 places, 744 transitions, 11415 flow. Second operand 11 states and 215 transitions. [2024-06-28 03:02:09,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 845 transitions, 14684 flow [2024-06-28 03:02:12,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 845 transitions, 14131 flow, removed 56 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:12,551 INFO L231 Difference]: Finished difference. Result has 353 places, 798 transitions, 12524 flow [2024-06-28 03:02:12,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10919, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12524, PETRI_PLACES=353, PETRI_TRANSITIONS=798} [2024-06-28 03:02:12,552 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 309 predicate places. [2024-06-28 03:02:12,552 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 798 transitions, 12524 flow [2024-06-28 03:02:12,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:12,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:12,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:12,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:02:12,553 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:12,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:12,553 INFO L85 PathProgramCache]: Analyzing trace with hash 304858408, now seen corresponding path program 14 times [2024-06-28 03:02:12,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:12,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769390024] [2024-06-28 03:02:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:12,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:13,909 INFO 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 03:02:13,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:13,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769390024] [2024-06-28 03:02:13,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769390024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:13,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:13,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:02:13,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445544670] [2024-06-28 03:02:13,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:13,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:02:13,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:13,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:02:13,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:02:14,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:14,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 798 transitions, 12524 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 03:02:14,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:14,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:14,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:16,368 INFO L124 PetriNetUnfolderBase]: 5375/8295 cut-off events. [2024-06-28 03:02:16,368 INFO L125 PetriNetUnfolderBase]: For 1266207/1266253 co-relation queries the response was YES. [2024-06-28 03:02:16,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84599 conditions, 8295 events. 5375/8295 cut-off events. For 1266207/1266253 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 49869 event pairs, 1319 based on Foata normal form. 18/8262 useless extension candidates. Maximal degree in co-relation 84438. Up to 7247 conditions per place. [2024-06-28 03:02:16,485 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 618 selfloop transitions, 219 changer transitions 0/849 dead transitions. [2024-06-28 03:02:16,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 849 transitions, 14637 flow [2024-06-28 03:02:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:02:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:02:16,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-28 03:02:16,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-28 03:02:16,486 INFO L175 Difference]: Start difference. First operand has 353 places, 798 transitions, 12524 flow. Second operand 12 states and 225 transitions. [2024-06-28 03:02:16,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 849 transitions, 14637 flow [2024-06-28 03:02:20,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 849 transitions, 14176 flow, removed 129 selfloop flow, removed 7 redundant places. [2024-06-28 03:02:20,268 INFO L231 Difference]: Finished difference. Result has 358 places, 804 transitions, 12777 flow [2024-06-28 03:02:20,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12063, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12777, PETRI_PLACES=358, PETRI_TRANSITIONS=804} [2024-06-28 03:02:20,269 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 314 predicate places. [2024-06-28 03:02:20,269 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 804 transitions, 12777 flow [2024-06-28 03:02:20,269 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 03:02:20,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:20,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:20,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:02:20,269 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:20,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:20,270 INFO L85 PathProgramCache]: Analyzing trace with hash -937755109, now seen corresponding path program 9 times [2024-06-28 03:02:20,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:20,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800083474] [2024-06-28 03:02:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:20,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:21,690 INFO 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 03:02:21,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:21,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800083474] [2024-06-28 03:02:21,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800083474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:21,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:21,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:02:21,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378586140] [2024-06-28 03:02:21,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:21,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:02:21,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:21,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:02:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:02:21,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:21,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 804 transitions, 12777 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 03:02:21,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:21,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:21,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:24,183 INFO L124 PetriNetUnfolderBase]: 5359/8297 cut-off events. [2024-06-28 03:02:24,183 INFO L125 PetriNetUnfolderBase]: For 1245577/1245599 co-relation queries the response was YES. [2024-06-28 03:02:24,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84656 conditions, 8297 events. 5359/8297 cut-off events. For 1245577/1245599 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 49997 event pairs, 1267 based on Foata normal form. 8/8259 useless extension candidates. Maximal degree in co-relation 84493. Up to 7133 conditions per place. [2024-06-28 03:02:24,302 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 602 selfloop transitions, 241 changer transitions 0/855 dead transitions. [2024-06-28 03:02:24,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 855 transitions, 14756 flow [2024-06-28 03:02:24,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:02:24,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:02:24,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 244 transitions. [2024-06-28 03:02:24,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4364937388193202 [2024-06-28 03:02:24,303 INFO L175 Difference]: Start difference. First operand has 358 places, 804 transitions, 12777 flow. Second operand 13 states and 244 transitions. [2024-06-28 03:02:24,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 855 transitions, 14756 flow [2024-06-28 03:02:27,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 855 transitions, 14135 flow, removed 121 selfloop flow, removed 11 redundant places. [2024-06-28 03:02:27,746 INFO L231 Difference]: Finished difference. Result has 360 places, 804 transitions, 12695 flow [2024-06-28 03:02:27,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12156, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12695, PETRI_PLACES=360, PETRI_TRANSITIONS=804} [2024-06-28 03:02:27,747 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 316 predicate places. [2024-06-28 03:02:27,747 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 804 transitions, 12695 flow [2024-06-28 03:02:27,747 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 03:02:27,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:27,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:27,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:02:27,748 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:27,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:27,748 INFO L85 PathProgramCache]: Analyzing trace with hash 391546498, now seen corresponding path program 15 times [2024-06-28 03:02:27,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:27,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243548689] [2024-06-28 03:02:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:27,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:29,083 INFO 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 03:02:29,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:29,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243548689] [2024-06-28 03:02:29,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243548689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:29,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:29,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:02:29,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126248598] [2024-06-28 03:02:29,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:29,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:02:29,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:29,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:02:29,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:02:29,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:29,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 804 transitions, 12695 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 03:02:29,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:29,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:29,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:31,381 INFO L124 PetriNetUnfolderBase]: 5345/8244 cut-off events. [2024-06-28 03:02:31,381 INFO L125 PetriNetUnfolderBase]: For 1184817/1184872 co-relation queries the response was YES. [2024-06-28 03:02:31,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83014 conditions, 8244 events. 5345/8244 cut-off events. For 1184817/1184872 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 49344 event pairs, 1308 based on Foata normal form. 10/8204 useless extension candidates. Maximal degree in co-relation 82852. Up to 7180 conditions per place. [2024-06-28 03:02:31,490 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 656 selfloop transitions, 175 changer transitions 0/843 dead transitions. [2024-06-28 03:02:31,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 843 transitions, 14571 flow [2024-06-28 03:02:31,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:02:31,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:02:31,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 03:02:31,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441860465116279 [2024-06-28 03:02:31,491 INFO L175 Difference]: Start difference. First operand has 360 places, 804 transitions, 12695 flow. Second operand 10 states and 191 transitions. [2024-06-28 03:02:31,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 843 transitions, 14571 flow [2024-06-28 03:02:34,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 843 transitions, 13958 flow, removed 92 selfloop flow, removed 11 redundant places. [2024-06-28 03:02:34,614 INFO L231 Difference]: Finished difference. Result has 359 places, 804 transitions, 12463 flow [2024-06-28 03:02:34,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12082, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12463, PETRI_PLACES=359, PETRI_TRANSITIONS=804} [2024-06-28 03:02:34,615 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 315 predicate places. [2024-06-28 03:02:34,615 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 804 transitions, 12463 flow [2024-06-28 03:02:34,615 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 03:02:34,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:34,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:34,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:02:34,615 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:34,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:34,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1566290405, now seen corresponding path program 10 times [2024-06-28 03:02:34,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:34,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841842047] [2024-06-28 03:02:34,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:34,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:36,168 INFO 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 03:02:36,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:36,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841842047] [2024-06-28 03:02:36,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841842047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:36,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:36,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:02:36,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633130707] [2024-06-28 03:02:36,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:36,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:02:36,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:36,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:02:36,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:02:36,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:36,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 804 transitions, 12463 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 03:02:36,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:36,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:36,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:38,295 INFO L124 PetriNetUnfolderBase]: 5352/8270 cut-off events. [2024-06-28 03:02:38,296 INFO L125 PetriNetUnfolderBase]: For 1179839/1179897 co-relation queries the response was YES. [2024-06-28 03:02:38,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82880 conditions, 8270 events. 5352/8270 cut-off events. For 1179839/1179897 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 49729 event pairs, 1277 based on Foata normal form. 8/8243 useless extension candidates. Maximal degree in co-relation 82717. Up to 6770 conditions per place. [2024-06-28 03:02:38,416 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 525 selfloop transitions, 317 changer transitions 0/854 dead transitions. [2024-06-28 03:02:38,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 854 transitions, 14600 flow [2024-06-28 03:02:38,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:02:38,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:02:38,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-28 03:02:38,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627906976744186 [2024-06-28 03:02:38,418 INFO L175 Difference]: Start difference. First operand has 359 places, 804 transitions, 12463 flow. Second operand 10 states and 199 transitions. [2024-06-28 03:02:38,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 854 transitions, 14600 flow [2024-06-28 03:02:41,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 854 transitions, 13857 flow, removed 66 selfloop flow, removed 10 redundant places. [2024-06-28 03:02:41,657 INFO L231 Difference]: Finished difference. Result has 359 places, 807 transitions, 12481 flow [2024-06-28 03:02:41,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11720, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12481, PETRI_PLACES=359, PETRI_TRANSITIONS=807} [2024-06-28 03:02:41,658 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 315 predicate places. [2024-06-28 03:02:41,658 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 807 transitions, 12481 flow [2024-06-28 03:02:41,658 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 03:02:41,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:41,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:41,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:02:41,658 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:41,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:41,659 INFO L85 PathProgramCache]: Analyzing trace with hash -323884123, now seen corresponding path program 11 times [2024-06-28 03:02:41,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:41,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3576738] [2024-06-28 03:02:41,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:41,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:42,934 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 03:02:42,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:42,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3576738] [2024-06-28 03:02:42,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3576738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:42,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:42,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:02:42,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262349454] [2024-06-28 03:02:42,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:42,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:02:42,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:42,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:02:42,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:02:43,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:43,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 807 transitions, 12481 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 03:02:43,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:43,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:43,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:45,147 INFO L124 PetriNetUnfolderBase]: 5374/8298 cut-off events. [2024-06-28 03:02:45,148 INFO L125 PetriNetUnfolderBase]: For 1209478/1209542 co-relation queries the response was YES. [2024-06-28 03:02:45,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83304 conditions, 8298 events. 5374/8298 cut-off events. For 1209478/1209542 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 49852 event pairs, 1277 based on Foata normal form. 8/8271 useless extension candidates. Maximal degree in co-relation 83142. Up to 6697 conditions per place. [2024-06-28 03:02:45,259 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 531 selfloop transitions, 323 changer transitions 0/866 dead transitions. [2024-06-28 03:02:45,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 866 transitions, 14723 flow [2024-06-28 03:02:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:02:45,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:02:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-28 03:02:45,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 03:02:45,261 INFO L175 Difference]: Start difference. First operand has 359 places, 807 transitions, 12481 flow. Second operand 11 states and 220 transitions. [2024-06-28 03:02:45,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 866 transitions, 14723 flow [2024-06-28 03:02:48,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 866 transitions, 13997 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-28 03:02:48,348 INFO L231 Difference]: Finished difference. Result has 361 places, 810 transitions, 12539 flow [2024-06-28 03:02:48,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11755, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12539, PETRI_PLACES=361, PETRI_TRANSITIONS=810} [2024-06-28 03:02:48,348 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 317 predicate places. [2024-06-28 03:02:48,348 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 810 transitions, 12539 flow [2024-06-28 03:02:48,348 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 03:02:48,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:48,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:48,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:02:48,349 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:48,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:48,349 INFO L85 PathProgramCache]: Analyzing trace with hash -323884278, now seen corresponding path program 16 times [2024-06-28 03:02:48,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:48,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840225149] [2024-06-28 03:02:48,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:49,859 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 03:02:49,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:49,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840225149] [2024-06-28 03:02:49,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840225149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:49,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:49,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:02:49,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713340673] [2024-06-28 03:02:49,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:49,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:02:49,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:49,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:02:49,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:02:50,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:50,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 810 transitions, 12539 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 03:02:50,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:50,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:50,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:52,009 INFO L124 PetriNetUnfolderBase]: 5391/8327 cut-off events. [2024-06-28 03:02:52,009 INFO L125 PetriNetUnfolderBase]: For 1211316/1211386 co-relation queries the response was YES. [2024-06-28 03:02:52,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83814 conditions, 8327 events. 5391/8327 cut-off events. For 1211316/1211386 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 50038 event pairs, 1331 based on Foata normal form. 10/8300 useless extension candidates. Maximal degree in co-relation 83652. Up to 7462 conditions per place. [2024-06-28 03:02:52,127 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 660 selfloop transitions, 178 changer transitions 0/850 dead transitions. [2024-06-28 03:02:52,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 850 transitions, 14559 flow [2024-06-28 03:02:52,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:02:52,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:02:52,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 03:02:52,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2024-06-28 03:02:52,128 INFO L175 Difference]: Start difference. First operand has 361 places, 810 transitions, 12539 flow. Second operand 10 states and 192 transitions. [2024-06-28 03:02:52,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 850 transitions, 14559 flow [2024-06-28 03:02:55,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 850 transitions, 13816 flow, removed 52 selfloop flow, removed 10 redundant places. [2024-06-28 03:02:55,124 INFO L231 Difference]: Finished difference. Result has 361 places, 812 transitions, 12254 flow [2024-06-28 03:02:55,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11796, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12254, PETRI_PLACES=361, PETRI_TRANSITIONS=812} [2024-06-28 03:02:55,125 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 317 predicate places. [2024-06-28 03:02:55,125 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 812 transitions, 12254 flow [2024-06-28 03:02:55,125 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 03:02:55,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:55,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:55,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:02:55,125 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:55,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1572008200, now seen corresponding path program 17 times [2024-06-28 03:02:55,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:55,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845305706] [2024-06-28 03:02:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:55,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:56,660 INFO 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 03:02:56,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:56,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845305706] [2024-06-28 03:02:56,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845305706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:56,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:56,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:02:56,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303951260] [2024-06-28 03:02:56,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:56,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:02:56,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:56,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:02:56,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:02:56,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:56,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 812 transitions, 12254 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 03:02:56,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:56,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:56,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:59,071 INFO L124 PetriNetUnfolderBase]: 5433/8388 cut-off events. [2024-06-28 03:02:59,072 INFO L125 PetriNetUnfolderBase]: For 1225608/1225678 co-relation queries the response was YES. [2024-06-28 03:02:59,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84178 conditions, 8388 events. 5433/8388 cut-off events. For 1225608/1225678 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 50441 event pairs, 1323 based on Foata normal form. 10/8361 useless extension candidates. Maximal degree in co-relation 84016. Up to 7315 conditions per place. [2024-06-28 03:02:59,169 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 648 selfloop transitions, 196 changer transitions 0/856 dead transitions. [2024-06-28 03:02:59,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 856 transitions, 14688 flow [2024-06-28 03:02:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:02:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:02:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 03:02:59,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-28 03:02:59,170 INFO L175 Difference]: Start difference. First operand has 361 places, 812 transitions, 12254 flow. Second operand 10 states and 197 transitions. [2024-06-28 03:02:59,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 856 transitions, 14688 flow [2024-06-28 03:03:01,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 856 transitions, 14247 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-28 03:03:01,972 INFO L231 Difference]: Finished difference. Result has 362 places, 816 transitions, 12407 flow [2024-06-28 03:03:01,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11817, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12407, PETRI_PLACES=362, PETRI_TRANSITIONS=816} [2024-06-28 03:03:01,972 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 318 predicate places. [2024-06-28 03:03:01,972 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 816 transitions, 12407 flow [2024-06-28 03:03:01,972 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 03:03:01,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:01,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:01,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:03:01,973 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:01,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:01,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1571854595, now seen corresponding path program 12 times [2024-06-28 03:03:01,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:01,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125236229] [2024-06-28 03:03:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:01,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:03,597 INFO 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 03:03:03,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:03,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125236229] [2024-06-28 03:03:03,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125236229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:03,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:03,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:03:03,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853136478] [2024-06-28 03:03:03,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:03,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:03:03,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:03,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:03:03,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:03:03,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:03,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 816 transitions, 12407 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 03:03:03,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:03,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:03,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:05,838 INFO L124 PetriNetUnfolderBase]: 5477/8453 cut-off events. [2024-06-28 03:03:05,838 INFO L125 PetriNetUnfolderBase]: For 1229900/1229970 co-relation queries the response was YES. [2024-06-28 03:03:05,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84825 conditions, 8453 events. 5477/8453 cut-off events. For 1229900/1229970 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 50957 event pairs, 1282 based on Foata normal form. 8/8426 useless extension candidates. Maximal degree in co-relation 84663. Up to 6959 conditions per place. [2024-06-28 03:03:05,945 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 560 selfloop transitions, 299 changer transitions 0/871 dead transitions. [2024-06-28 03:03:05,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 871 transitions, 14631 flow [2024-06-28 03:03:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-28 03:03:05,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697674418604651 [2024-06-28 03:03:05,947 INFO L175 Difference]: Start difference. First operand has 362 places, 816 transitions, 12407 flow. Second operand 10 states and 202 transitions. [2024-06-28 03:03:05,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 871 transitions, 14631 flow [2024-06-28 03:03:09,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 871 transitions, 14292 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:09,102 INFO L231 Difference]: Finished difference. Result has 365 places, 822 transitions, 12830 flow [2024-06-28 03:03:09,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12070, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12830, PETRI_PLACES=365, PETRI_TRANSITIONS=822} [2024-06-28 03:03:09,102 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 321 predicate places. [2024-06-28 03:03:09,103 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 822 transitions, 12830 flow [2024-06-28 03:03:09,103 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 03:03:09,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:09,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:09,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:03:09,103 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:09,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:09,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1571860175, now seen corresponding path program 13 times [2024-06-28 03:03:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:09,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006484773] [2024-06-28 03:03:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:09,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:10,622 INFO 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 03:03:10,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006484773] [2024-06-28 03:03:10,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006484773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:10,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:10,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:03:10,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908975159] [2024-06-28 03:03:10,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:10,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:03:10,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:10,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:03:10,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:03:10,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:10,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 822 transitions, 12830 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 03:03:10,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:10,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:10,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:12,980 INFO L124 PetriNetUnfolderBase]: 5499/8495 cut-off events. [2024-06-28 03:03:12,981 INFO L125 PetriNetUnfolderBase]: For 1230700/1230776 co-relation queries the response was YES. [2024-06-28 03:03:13,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86113 conditions, 8495 events. 5499/8495 cut-off events. For 1230700/1230776 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 51342 event pairs, 1282 based on Foata normal form. 8/8468 useless extension candidates. Maximal degree in co-relation 85950. Up to 6931 conditions per place. [2024-06-28 03:03:13,097 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 555 selfloop transitions, 311 changer transitions 0/878 dead transitions. [2024-06-28 03:03:13,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 878 transitions, 15081 flow [2024-06-28 03:03:13,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 03:03:13,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-28 03:03:13,099 INFO L175 Difference]: Start difference. First operand has 365 places, 822 transitions, 12830 flow. Second operand 11 states and 219 transitions. [2024-06-28 03:03:13,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 878 transitions, 15081 flow [2024-06-28 03:03:16,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 878 transitions, 14386 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 03:03:16,187 INFO L231 Difference]: Finished difference. Result has 368 places, 825 transitions, 12912 flow [2024-06-28 03:03:16,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12135, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12912, PETRI_PLACES=368, PETRI_TRANSITIONS=825} [2024-06-28 03:03:16,188 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 324 predicate places. [2024-06-28 03:03:16,188 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 825 transitions, 12912 flow [2024-06-28 03:03:16,188 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 03:03:16,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:16,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:16,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:03:16,188 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:16,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:16,189 INFO L85 PathProgramCache]: Analyzing trace with hash -329390808, now seen corresponding path program 18 times [2024-06-28 03:03:16,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:16,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351426915] [2024-06-28 03:03:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:16,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:17,800 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 03:03:17,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:17,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351426915] [2024-06-28 03:03:17,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351426915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:17,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:17,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:03:17,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345350990] [2024-06-28 03:03:17,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:17,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:03:17,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:17,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:03:17,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:03:17,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:17,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 825 transitions, 12912 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 03:03:17,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:17,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:17,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:20,017 INFO L124 PetriNetUnfolderBase]: 5516/8526 cut-off events. [2024-06-28 03:03:20,017 INFO L125 PetriNetUnfolderBase]: For 1259342/1259424 co-relation queries the response was YES. [2024-06-28 03:03:20,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86931 conditions, 8526 events. 5516/8526 cut-off events. For 1259342/1259424 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 51529 event pairs, 1333 based on Foata normal form. 10/8499 useless extension candidates. Maximal degree in co-relation 86767. Up to 7585 conditions per place. [2024-06-28 03:03:20,141 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 668 selfloop transitions, 184 changer transitions 0/864 dead transitions. [2024-06-28 03:03:20,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 864 transitions, 14924 flow [2024-06-28 03:03:20,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 03:03:20,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511627906976744 [2024-06-28 03:03:20,143 INFO L175 Difference]: Start difference. First operand has 368 places, 825 transitions, 12912 flow. Second operand 10 states and 194 transitions. [2024-06-28 03:03:20,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 864 transitions, 14924 flow [2024-06-28 03:03:23,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 864 transitions, 14190 flow, removed 61 selfloop flow, removed 10 redundant places. [2024-06-28 03:03:23,237 INFO L231 Difference]: Finished difference. Result has 368 places, 827 transitions, 12626 flow [2024-06-28 03:03:23,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12178, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12626, PETRI_PLACES=368, PETRI_TRANSITIONS=827} [2024-06-28 03:03:23,238 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 324 predicate places. [2024-06-28 03:03:23,238 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 827 transitions, 12626 flow [2024-06-28 03:03:23,238 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 03:03:23,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:23,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:23,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:03:23,239 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:23,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:23,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1572004325, now seen corresponding path program 14 times [2024-06-28 03:03:23,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:23,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698846356] [2024-06-28 03:03:23,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:23,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:24,490 INFO 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 03:03:24,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:24,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698846356] [2024-06-28 03:03:24,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698846356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:24,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:24,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:03:24,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192778777] [2024-06-28 03:03:24,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:24,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:03:24,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:24,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:03:24,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:03:24,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:24,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 827 transitions, 12626 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 03:03:24,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:24,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:24,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:26,857 INFO L124 PetriNetUnfolderBase]: 5538/8559 cut-off events. [2024-06-28 03:03:26,857 INFO L125 PetriNetUnfolderBase]: For 1227798/1227874 co-relation queries the response was YES. [2024-06-28 03:03:26,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85889 conditions, 8559 events. 5538/8559 cut-off events. For 1227798/1227874 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 51807 event pairs, 1282 based on Foata normal form. 8/8532 useless extension candidates. Maximal degree in co-relation 85725. Up to 6749 conditions per place. [2024-06-28 03:03:26,977 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 528 selfloop transitions, 348 changer transitions 0/888 dead transitions. [2024-06-28 03:03:26,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 888 transitions, 14929 flow [2024-06-28 03:03:26,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:03:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:03:26,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 239 transitions. [2024-06-28 03:03:26,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631782945736434 [2024-06-28 03:03:26,979 INFO L175 Difference]: Start difference. First operand has 368 places, 827 transitions, 12626 flow. Second operand 12 states and 239 transitions. [2024-06-28 03:03:26,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 888 transitions, 14929 flow [2024-06-28 03:03:29,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 888 transitions, 14517 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 03:03:29,943 INFO L231 Difference]: Finished difference. Result has 372 places, 830 transitions, 13073 flow [2024-06-28 03:03:29,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12214, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13073, PETRI_PLACES=372, PETRI_TRANSITIONS=830} [2024-06-28 03:03:29,944 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 328 predicate places. [2024-06-28 03:03:29,944 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 830 transitions, 13073 flow [2024-06-28 03:03:29,944 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 03:03:29,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:29,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:29,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:03:29,945 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:29,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1571860330, now seen corresponding path program 19 times [2024-06-28 03:03:29,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:29,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755751831] [2024-06-28 03:03:29,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:29,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:31,350 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 03:03:31,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:31,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755751831] [2024-06-28 03:03:31,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755751831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:31,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:31,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:03:31,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633945020] [2024-06-28 03:03:31,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:31,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:03:31,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:03:31,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:03:31,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:31,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 830 transitions, 13073 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 03:03:31,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:31,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:31,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:33,575 INFO L124 PetriNetUnfolderBase]: 5530/8551 cut-off events. [2024-06-28 03:03:33,575 INFO L125 PetriNetUnfolderBase]: For 1246715/1246797 co-relation queries the response was YES. [2024-06-28 03:03:33,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86908 conditions, 8551 events. 5530/8551 cut-off events. For 1246715/1246797 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 51745 event pairs, 1331 based on Foata normal form. 10/8524 useless extension candidates. Maximal degree in co-relation 86743. Up to 7671 conditions per place. [2024-06-28 03:03:33,696 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 686 selfloop transitions, 170 changer transitions 0/868 dead transitions. [2024-06-28 03:03:33,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 868 transitions, 15041 flow [2024-06-28 03:03:33,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 03:03:33,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44883720930232557 [2024-06-28 03:03:33,697 INFO L175 Difference]: Start difference. First operand has 372 places, 830 transitions, 13073 flow. Second operand 10 states and 193 transitions. [2024-06-28 03:03:33,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 868 transitions, 15041 flow [2024-06-28 03:03:37,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 868 transitions, 14202 flow, removed 83 selfloop flow, removed 11 redundant places. [2024-06-28 03:03:37,161 INFO L231 Difference]: Finished difference. Result has 371 places, 830 transitions, 12584 flow [2024-06-28 03:03:37,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12234, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12584, PETRI_PLACES=371, PETRI_TRANSITIONS=830} [2024-06-28 03:03:37,162 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 327 predicate places. [2024-06-28 03:03:37,162 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 830 transitions, 12584 flow [2024-06-28 03:03:37,163 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 03:03:37,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:37,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:37,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:03:37,163 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:37,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:37,163 INFO L85 PathProgramCache]: Analyzing trace with hash -605141664, now seen corresponding path program 20 times [2024-06-28 03:03:37,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:37,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105115878] [2024-06-28 03:03:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:37,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:38,633 INFO 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 03:03:38,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:38,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105115878] [2024-06-28 03:03:38,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105115878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:38,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:38,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:03:38,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174202009] [2024-06-28 03:03:38,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:38,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:03:38,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:38,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:03:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:03:38,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:38,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 830 transitions, 12584 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 03:03:38,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:38,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:38,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:40,904 INFO L124 PetriNetUnfolderBase]: 5566/8600 cut-off events. [2024-06-28 03:03:40,904 INFO L125 PetriNetUnfolderBase]: For 1222523/1222594 co-relation queries the response was YES. [2024-06-28 03:03:40,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85684 conditions, 8600 events. 5566/8600 cut-off events. For 1222523/1222594 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 52137 event pairs, 1796 based on Foata normal form. 4/8557 useless extension candidates. Maximal degree in co-relation 85519. Up to 8053 conditions per place. [2024-06-28 03:03:41,036 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 800 selfloop transitions, 56 changer transitions 0/868 dead transitions. [2024-06-28 03:03:41,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 868 transitions, 14610 flow [2024-06-28 03:03:41,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:41,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:41,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 03:03:41,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-28 03:03:41,037 INFO L175 Difference]: Start difference. First operand has 371 places, 830 transitions, 12584 flow. Second operand 10 states and 185 transitions. [2024-06-28 03:03:41,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 868 transitions, 14610 flow [2024-06-28 03:03:44,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 868 transitions, 14231 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 03:03:44,313 INFO L231 Difference]: Finished difference. Result has 372 places, 835 transitions, 12451 flow [2024-06-28 03:03:44,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12205, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=774, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12451, PETRI_PLACES=372, PETRI_TRANSITIONS=835} [2024-06-28 03:03:44,314 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 328 predicate places. [2024-06-28 03:03:44,314 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 835 transitions, 12451 flow [2024-06-28 03:03:44,314 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 03:03:44,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:44,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:44,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:03:44,315 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:44,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1970124523, now seen corresponding path program 15 times [2024-06-28 03:03:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:44,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353794321] [2024-06-28 03:03:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:44,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:45,621 INFO 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 03:03:45,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:45,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353794321] [2024-06-28 03:03:45,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353794321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:45,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:45,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:03:45,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056305560] [2024-06-28 03:03:45,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:45,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:03:45,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:45,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:03:45,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:03:45,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:45,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 835 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 03:03:45,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:45,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:45,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:48,246 INFO L124 PetriNetUnfolderBase]: 5588/8634 cut-off events. [2024-06-28 03:03:48,246 INFO L125 PetriNetUnfolderBase]: For 1226304/1226375 co-relation queries the response was YES. [2024-06-28 03:03:48,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85856 conditions, 8634 events. 5588/8634 cut-off events. For 1226304/1226375 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 52389 event pairs, 1790 based on Foata normal form. 4/8591 useless extension candidates. Maximal degree in co-relation 85690. Up to 7782 conditions per place. [2024-06-28 03:03:48,339 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 749 selfloop transitions, 125 changer transitions 0/886 dead transitions. [2024-06-28 03:03:48,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 886 transitions, 14677 flow [2024-06-28 03:03:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:03:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:03:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-28 03:03:48,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 03:03:48,340 INFO L175 Difference]: Start difference. First operand has 372 places, 835 transitions, 12451 flow. Second operand 11 states and 209 transitions. [2024-06-28 03:03:48,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 886 transitions, 14677 flow [2024-06-28 03:03:50,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 886 transitions, 14483 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:50,633 INFO L231 Difference]: Finished difference. Result has 376 places, 838 transitions, 12652 flow [2024-06-28 03:03:50,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12257, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=710, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12652, PETRI_PLACES=376, PETRI_TRANSITIONS=838} [2024-06-28 03:03:50,634 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 332 predicate places. [2024-06-28 03:03:50,634 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 838 transitions, 12652 flow [2024-06-28 03:03:50,634 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 03:03:50,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:50,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:50,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:03:50,635 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:50,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash 242840299, now seen corresponding path program 16 times [2024-06-28 03:03:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:50,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369940449] [2024-06-28 03:03:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:50,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:51,952 INFO 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 03:03:51,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:51,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369940449] [2024-06-28 03:03:51,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369940449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:51,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:51,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:03:51,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333332524] [2024-06-28 03:03:51,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:51,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:03:51,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:51,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:03:51,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:03:52,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:52,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 838 transitions, 12652 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 03:03:52,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:52,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:52,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:54,552 INFO L124 PetriNetUnfolderBase]: 5629/8692 cut-off events. [2024-06-28 03:03:54,553 INFO L125 PetriNetUnfolderBase]: For 1265257/1265314 co-relation queries the response was YES. [2024-06-28 03:03:54,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87579 conditions, 8692 events. 5629/8692 cut-off events. For 1265257/1265314 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 52743 event pairs, 1793 based on Foata normal form. 4/8651 useless extension candidates. Maximal degree in co-relation 87412. Up to 7668 conditions per place. [2024-06-28 03:03:54,661 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 746 selfloop transitions, 141 changer transitions 0/899 dead transitions. [2024-06-28 03:03:54,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 899 transitions, 15398 flow [2024-06-28 03:03:54,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:03:54,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:03:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-06-28 03:03:54,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-28 03:03:54,662 INFO L175 Difference]: Start difference. First operand has 376 places, 838 transitions, 12652 flow. Second operand 12 states and 231 transitions. [2024-06-28 03:03:54,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 899 transitions, 15398 flow [2024-06-28 03:03:57,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 899 transitions, 15033 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-28 03:03:57,602 INFO L231 Difference]: Finished difference. Result has 379 places, 844 transitions, 12858 flow [2024-06-28 03:03:57,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12287, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12858, PETRI_PLACES=379, PETRI_TRANSITIONS=844} [2024-06-28 03:03:57,603 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 335 predicate places. [2024-06-28 03:03:57,603 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 844 transitions, 12858 flow [2024-06-28 03:03:57,603 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 03:03:57,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:57,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:57,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:03:57,604 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:57,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:57,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1019944213, now seen corresponding path program 17 times [2024-06-28 03:03:57,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:57,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467815347] [2024-06-28 03:03:57,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:57,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:58,943 INFO 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 03:03:58,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:58,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467815347] [2024-06-28 03:03:58,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467815347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:58,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:58,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:03:58,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595883259] [2024-06-28 03:03:58,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:58,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:03:58,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:58,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:03:58,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:03:59,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:59,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 844 transitions, 12858 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 03:03:59,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:59,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:59,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:01,363 INFO L124 PetriNetUnfolderBase]: 5651/8727 cut-off events. [2024-06-28 03:04:01,364 INFO L125 PetriNetUnfolderBase]: For 1298421/1298478 co-relation queries the response was YES. [2024-06-28 03:04:01,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88536 conditions, 8727 events. 5651/8727 cut-off events. For 1298421/1298478 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 53036 event pairs, 1799 based on Foata normal form. 4/8686 useless extension candidates. Maximal degree in co-relation 88368. Up to 8193 conditions per place. [2024-06-28 03:04:01,476 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 836 selfloop transitions, 36 changer transitions 0/884 dead transitions. [2024-06-28 03:04:01,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 884 transitions, 14981 flow [2024-06-28 03:04:01,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 03:04:01,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-28 03:04:01,477 INFO L175 Difference]: Start difference. First operand has 379 places, 844 transitions, 12858 flow. Second operand 10 states and 185 transitions. [2024-06-28 03:04:01,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 884 transitions, 14981 flow [2024-06-28 03:04:04,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 884 transitions, 14638 flow, removed 95 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:04,805 INFO L231 Difference]: Finished difference. Result has 381 places, 847 transitions, 12743 flow [2024-06-28 03:04:04,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12549, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=808, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12743, PETRI_PLACES=381, PETRI_TRANSITIONS=847} [2024-06-28 03:04:04,805 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 337 predicate places. [2024-06-28 03:04:04,806 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 847 transitions, 12743 flow [2024-06-28 03:04:04,806 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 03:04:04,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:04,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:04,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:04:04,806 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:04,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:04,807 INFO L85 PathProgramCache]: Analyzing trace with hash 248352409, now seen corresponding path program 18 times [2024-06-28 03:04:04,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:04,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145111398] [2024-06-28 03:04:04,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:04,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:06,010 INFO 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 03:04:06,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:06,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145111398] [2024-06-28 03:04:06,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145111398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:06,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:06,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:06,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341540277] [2024-06-28 03:04:06,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:06,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:06,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:06,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:06,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:06,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 847 transitions, 12743 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 03:04:06,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:06,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:06,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:08,381 INFO L124 PetriNetUnfolderBase]: 5661/8756 cut-off events. [2024-06-28 03:04:08,381 INFO L125 PetriNetUnfolderBase]: For 1313672/1313685 co-relation queries the response was YES. [2024-06-28 03:04:08,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88577 conditions, 8756 events. 5661/8756 cut-off events. For 1313672/1313685 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 53298 event pairs, 1771 based on Foata normal form. 4/8727 useless extension candidates. Maximal degree in co-relation 88407. Up to 7874 conditions per place. [2024-06-28 03:04:08,512 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 779 selfloop transitions, 119 changer transitions 0/910 dead transitions. [2024-06-28 03:04:08,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 910 transitions, 15561 flow [2024-06-28 03:04:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 03:04:08,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604651162790698 [2024-06-28 03:04:08,513 INFO L175 Difference]: Start difference. First operand has 381 places, 847 transitions, 12743 flow. Second operand 10 states and 198 transitions. [2024-06-28 03:04:08,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 910 transitions, 15561 flow [2024-06-28 03:04:11,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 910 transitions, 15401 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:11,869 INFO L231 Difference]: Finished difference. Result has 384 places, 853 transitions, 13143 flow [2024-06-28 03:04:11,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12583, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13143, PETRI_PLACES=384, PETRI_TRANSITIONS=853} [2024-06-28 03:04:11,870 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 340 predicate places. [2024-06-28 03:04:11,870 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 853 transitions, 13143 flow [2024-06-28 03:04:11,870 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 03:04:11,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:11,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:11,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:04:11,871 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:11,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1276652113, now seen corresponding path program 19 times [2024-06-28 03:04:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:11,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771959176] [2024-06-28 03:04:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:11,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:12,897 INFO 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 03:04:12,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:12,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771959176] [2024-06-28 03:04:12,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771959176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:12,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:12,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:12,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005105675] [2024-06-28 03:04:12,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:12,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:12,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:12,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:12,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:13,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:13,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 853 transitions, 13143 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 03:04:13,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:13,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:13,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:15,302 INFO L124 PetriNetUnfolderBase]: 5715/8834 cut-off events. [2024-06-28 03:04:15,302 INFO L125 PetriNetUnfolderBase]: For 1366923/1366936 co-relation queries the response was YES. [2024-06-28 03:04:15,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90882 conditions, 8834 events. 5715/8834 cut-off events. For 1366923/1366936 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 53864 event pairs, 1769 based on Foata normal form. 4/8805 useless extension candidates. Maximal degree in co-relation 90710. Up to 8045 conditions per place. [2024-06-28 03:04:15,431 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 812 selfloop transitions, 87 changer transitions 0/911 dead transitions. [2024-06-28 03:04:15,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 911 transitions, 16724 flow [2024-06-28 03:04:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:15,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 03:04:15,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-28 03:04:15,445 INFO L175 Difference]: Start difference. First operand has 384 places, 853 transitions, 13143 flow. Second operand 10 states and 197 transitions. [2024-06-28 03:04:15,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 911 transitions, 16724 flow [2024-06-28 03:04:19,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 911 transitions, 16428 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:19,101 INFO L231 Difference]: Finished difference. Result has 389 places, 865 transitions, 13600 flow [2024-06-28 03:04:19,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12857, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=853, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=771, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13600, PETRI_PLACES=389, PETRI_TRANSITIONS=865} [2024-06-28 03:04:19,102 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 345 predicate places. [2024-06-28 03:04:19,102 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 865 transitions, 13600 flow [2024-06-28 03:04:19,102 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 03:04:19,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:19,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:19,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:04:19,103 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:19,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:19,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1010413077, now seen corresponding path program 1 times [2024-06-28 03:04:19,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:19,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729542549] [2024-06-28 03:04:19,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:19,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:20,233 INFO 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 03:04:20,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:20,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729542549] [2024-06-28 03:04:20,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729542549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:20,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:20,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:20,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183518835] [2024-06-28 03:04:20,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:20,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:20,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:20,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:20,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:04:20,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 865 transitions, 13600 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 03:04:20,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:20,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:04:20,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:22,807 INFO L124 PetriNetUnfolderBase]: 6443/9741 cut-off events. [2024-06-28 03:04:22,807 INFO L125 PetriNetUnfolderBase]: For 1424460/1424469 co-relation queries the response was YES. [2024-06-28 03:04:22,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98028 conditions, 9741 events. 6443/9741 cut-off events. For 1424460/1424469 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 57203 event pairs, 2059 based on Foata normal form. 2/9720 useless extension candidates. Maximal degree in co-relation 97853. Up to 9385 conditions per place. [2024-06-28 03:04:22,945 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 861 selfloop transitions, 31 changer transitions 0/902 dead transitions. [2024-06-28 03:04:22,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 902 transitions, 15709 flow [2024-06-28 03:04:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:04:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:04:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:04:22,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108527131782946 [2024-06-28 03:04:22,947 INFO L175 Difference]: Start difference. First operand has 389 places, 865 transitions, 13600 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:04:22,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 902 transitions, 15709 flow [2024-06-28 03:04:26,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 902 transitions, 15389 flow, removed 117 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:26,576 INFO L231 Difference]: Finished difference. Result has 393 places, 873 transitions, 13522 flow [2024-06-28 03:04:26,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13285, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=834, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13522, PETRI_PLACES=393, PETRI_TRANSITIONS=873} [2024-06-28 03:04:26,577 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 349 predicate places. [2024-06-28 03:04:26,577 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 873 transitions, 13522 flow [2024-06-28 03:04:26,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 03:04:26,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:26,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:26,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:04:26,577 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:26,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:26,578 INFO L85 PathProgramCache]: Analyzing trace with hash 242836424, now seen corresponding path program 21 times [2024-06-28 03:04:26,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:26,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392561910] [2024-06-28 03:04:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:26,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:27,844 INFO 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 03:04:27,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:27,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392561910] [2024-06-28 03:04:27,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392561910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:27,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:27,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:27,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020946914] [2024-06-28 03:04:27,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:27,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:27,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:27,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:27,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:27,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:27,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 873 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 03:04:27,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:27,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:27,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:30,201 INFO L124 PetriNetUnfolderBase]: 5792/8949 cut-off events. [2024-06-28 03:04:30,202 INFO L125 PetriNetUnfolderBase]: For 1419234/1419247 co-relation queries the response was YES. [2024-06-28 03:04:30,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92338 conditions, 8949 events. 5792/8949 cut-off events. For 1419234/1419247 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 54602 event pairs, 1761 based on Foata normal form. 4/8920 useless extension candidates. Maximal degree in co-relation 92161. Up to 8265 conditions per place. [2024-06-28 03:04:30,332 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 830 selfloop transitions, 71 changer transitions 0/913 dead transitions. [2024-06-28 03:04:30,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 913 transitions, 16084 flow [2024-06-28 03:04:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 03:04:30,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43953488372093025 [2024-06-28 03:04:30,334 INFO L175 Difference]: Start difference. First operand has 393 places, 873 transitions, 13522 flow. Second operand 10 states and 189 transitions. [2024-06-28 03:04:30,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 913 transitions, 16084 flow [2024-06-28 03:04:33,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 913 transitions, 15990 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:33,621 INFO L231 Difference]: Finished difference. Result has 395 places, 877 transitions, 13793 flow [2024-06-28 03:04:33,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13428, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=873, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=804, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13793, PETRI_PLACES=395, PETRI_TRANSITIONS=877} [2024-06-28 03:04:33,621 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 351 predicate places. [2024-06-28 03:04:33,622 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 877 transitions, 13793 flow [2024-06-28 03:04:33,622 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 03:04:33,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:33,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:33,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:04:33,622 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:33,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:33,623 INFO L85 PathProgramCache]: Analyzing trace with hash 242840144, now seen corresponding path program 22 times [2024-06-28 03:04:33,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:33,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542225106] [2024-06-28 03:04:33,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:33,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:34,918 INFO 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 03:04:34,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:34,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542225106] [2024-06-28 03:04:34,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542225106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:34,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:34,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:34,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564643958] [2024-06-28 03:04:34,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:34,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:34,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:34,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:34,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:35,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:35,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 877 transitions, 13793 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 03:04:35,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:35,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:35,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:37,748 INFO L124 PetriNetUnfolderBase]: 5809/8976 cut-off events. [2024-06-28 03:04:37,749 INFO L125 PetriNetUnfolderBase]: For 1455533/1455546 co-relation queries the response was YES. [2024-06-28 03:04:37,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93317 conditions, 8976 events. 5809/8976 cut-off events. For 1455533/1455546 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 54804 event pairs, 1766 based on Foata normal form. 4/8947 useless extension candidates. Maximal degree in co-relation 93139. Up to 8367 conditions per place. [2024-06-28 03:04:37,858 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 834 selfloop transitions, 66 changer transitions 0/912 dead transitions. [2024-06-28 03:04:37,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 912 transitions, 15907 flow [2024-06-28 03:04:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:37,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 03:04:37,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325581395348837 [2024-06-28 03:04:37,859 INFO L175 Difference]: Start difference. First operand has 395 places, 877 transitions, 13793 flow. Second operand 10 states and 186 transitions. [2024-06-28 03:04:37,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 912 transitions, 15907 flow [2024-06-28 03:04:41,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 912 transitions, 15644 flow, removed 91 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:41,033 INFO L231 Difference]: Finished difference. Result has 399 places, 879 transitions, 13783 flow [2024-06-28 03:04:41,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13570, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13783, PETRI_PLACES=399, PETRI_TRANSITIONS=879} [2024-06-28 03:04:41,034 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 355 predicate places. [2024-06-28 03:04:41,034 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 879 transitions, 13783 flow [2024-06-28 03:04:41,034 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 03:04:41,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:41,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:41,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:04:41,035 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:41,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash 248346674, now seen corresponding path program 23 times [2024-06-28 03:04:41,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:41,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707039604] [2024-06-28 03:04:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:41,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:42,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:42,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707039604] [2024-06-28 03:04:42,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707039604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:42,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:42,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:42,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176294936] [2024-06-28 03:04:42,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:42,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:42,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:42,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:42,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:42,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:42,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 879 transitions, 13783 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 03:04:42,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:42,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:42,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:45,123 INFO L124 PetriNetUnfolderBase]: 5826/8998 cut-off events. [2024-06-28 03:04:45,124 INFO L125 PetriNetUnfolderBase]: For 1478884/1478897 co-relation queries the response was YES. [2024-06-28 03:04:45,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93562 conditions, 8998 events. 5826/8998 cut-off events. For 1478884/1478897 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 54954 event pairs, 1766 based on Foata normal form. 4/8969 useless extension candidates. Maximal degree in co-relation 93382. Up to 8439 conditions per place. [2024-06-28 03:04:45,262 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 850 selfloop transitions, 54 changer transitions 0/916 dead transitions. [2024-06-28 03:04:45,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 916 transitions, 15895 flow [2024-06-28 03:04:45,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:45,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:45,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 03:04:45,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325581395348837 [2024-06-28 03:04:45,264 INFO L175 Difference]: Start difference. First operand has 399 places, 879 transitions, 13783 flow. Second operand 10 states and 186 transitions. [2024-06-28 03:04:45,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 916 transitions, 15895 flow [2024-06-28 03:04:49,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 916 transitions, 15688 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:49,304 INFO L231 Difference]: Finished difference. Result has 400 places, 881 transitions, 13769 flow [2024-06-28 03:04:49,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13576, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=879, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=825, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13769, PETRI_PLACES=400, PETRI_TRANSITIONS=881} [2024-06-28 03:04:49,304 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 356 predicate places. [2024-06-28 03:04:49,305 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 881 transitions, 13769 flow [2024-06-28 03:04:49,305 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 03:04:49,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:49,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:49,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:04:49,305 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:49,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash 248554219, now seen corresponding path program 20 times [2024-06-28 03:04:49,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:49,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203298939] [2024-06-28 03:04:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:50,564 INFO 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 03:04:50,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:50,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203298939] [2024-06-28 03:04:50,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203298939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:50,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:50,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:50,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691948005] [2024-06-28 03:04:50,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:50,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:50,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:50,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:50,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 881 transitions, 13769 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 03:04:50,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:50,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:50,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:53,025 INFO L124 PetriNetUnfolderBase]: 5848/9040 cut-off events. [2024-06-28 03:04:53,025 INFO L125 PetriNetUnfolderBase]: For 1510816/1510829 co-relation queries the response was YES. [2024-06-28 03:04:53,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94161 conditions, 9040 events. 5848/9040 cut-off events. For 1510816/1510829 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 55339 event pairs, 1764 based on Foata normal form. 4/9011 useless extension candidates. Maximal degree in co-relation 93981. Up to 8106 conditions per place. [2024-06-28 03:04:53,175 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 795 selfloop transitions, 128 changer transitions 0/935 dead transitions. [2024-06-28 03:04:53,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 935 transitions, 16474 flow [2024-06-28 03:04:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:53,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:04:53,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 03:04:53,177 INFO L175 Difference]: Start difference. First operand has 400 places, 881 transitions, 13769 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:04:53,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 935 transitions, 16474 flow [2024-06-28 03:04:57,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 935 transitions, 16303 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:57,587 INFO L231 Difference]: Finished difference. Result has 402 places, 884 transitions, 13994 flow [2024-06-28 03:04:57,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13598, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=881, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13994, PETRI_PLACES=402, PETRI_TRANSITIONS=884} [2024-06-28 03:04:57,587 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 358 predicate places. [2024-06-28 03:04:57,587 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 884 transitions, 13994 flow [2024-06-28 03:04:57,588 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 03:04:57,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:57,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:57,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:04:57,588 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:57,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1276444723, now seen corresponding path program 21 times [2024-06-28 03:04:57,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:57,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258486162] [2024-06-28 03:04:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:57,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:58,757 INFO 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 03:04:58,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:58,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258486162] [2024-06-28 03:04:58,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258486162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:58,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:58,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:58,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410978707] [2024-06-28 03:04:58,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:58,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:58,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:58,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:58,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:58,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 884 transitions, 13994 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 03:04:58,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:58,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:58,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:01,285 INFO L124 PetriNetUnfolderBase]: 5870/9072 cut-off events. [2024-06-28 03:05:01,285 INFO L125 PetriNetUnfolderBase]: For 1545314/1545327 co-relation queries the response was YES. [2024-06-28 03:05:01,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95136 conditions, 9072 events. 5870/9072 cut-off events. For 1545314/1545327 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 55579 event pairs, 1764 based on Foata normal form. 4/9043 useless extension candidates. Maximal degree in co-relation 94955. Up to 8325 conditions per place. [2024-06-28 03:05:01,439 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 845 selfloop transitions, 78 changer transitions 0/935 dead transitions. [2024-06-28 03:05:01,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 935 transitions, 16662 flow [2024-06-28 03:05:01,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:01,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 03:05:01,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44883720930232557 [2024-06-28 03:05:01,441 INFO L175 Difference]: Start difference. First operand has 402 places, 884 transitions, 13994 flow. Second operand 10 states and 193 transitions. [2024-06-28 03:05:01,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 935 transitions, 16662 flow [2024-06-28 03:05:05,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 935 transitions, 16300 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:05,118 INFO L231 Difference]: Finished difference. Result has 404 places, 887 transitions, 13931 flow [2024-06-28 03:05:05,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13632, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=884, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=806, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13931, PETRI_PLACES=404, PETRI_TRANSITIONS=887} [2024-06-28 03:05:05,118 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 360 predicate places. [2024-06-28 03:05:05,118 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 887 transitions, 13931 flow [2024-06-28 03:05:05,119 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 03:05:05,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:05,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:05,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:05:05,119 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:05,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:05,120 INFO L85 PathProgramCache]: Analyzing trace with hash 248346829, now seen corresponding path program 22 times [2024-06-28 03:05:05,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:05,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686215358] [2024-06-28 03:05:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:05,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:06,400 INFO 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 03:05:06,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:06,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686215358] [2024-06-28 03:05:06,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686215358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:06,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:06,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:06,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220647673] [2024-06-28 03:05:06,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:06,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:06,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:06,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:06,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:06,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:06,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 887 transitions, 13931 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 03:05:06,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:06,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:06,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:09,282 INFO L124 PetriNetUnfolderBase]: 5860/9058 cut-off events. [2024-06-28 03:05:09,282 INFO L125 PetriNetUnfolderBase]: For 1557125/1557138 co-relation queries the response was YES. [2024-06-28 03:05:09,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94494 conditions, 9058 events. 5860/9058 cut-off events. For 1557125/1557138 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 55446 event pairs, 1764 based on Foata normal form. 4/9029 useless extension candidates. Maximal degree in co-relation 94312. Up to 8094 conditions per place. [2024-06-28 03:05:09,399 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 806 selfloop transitions, 128 changer transitions 0/946 dead transitions. [2024-06-28 03:05:09,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 946 transitions, 16271 flow [2024-06-28 03:05:09,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:09,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 03:05:09,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452431289640592 [2024-06-28 03:05:09,400 INFO L175 Difference]: Start difference. First operand has 404 places, 887 transitions, 13931 flow. Second operand 11 states and 214 transitions. [2024-06-28 03:05:09,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 946 transitions, 16271 flow [2024-06-28 03:05:13,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 946 transitions, 16052 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:13,478 INFO L231 Difference]: Finished difference. Result has 408 places, 887 transitions, 13982 flow [2024-06-28 03:05:13,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13712, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13982, PETRI_PLACES=408, PETRI_TRANSITIONS=887} [2024-06-28 03:05:13,479 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 364 predicate places. [2024-06-28 03:05:13,479 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 887 transitions, 13982 flow [2024-06-28 03:05:13,479 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 03:05:13,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:13,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:13,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:05:13,480 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:13,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:13,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1276646533, now seen corresponding path program 23 times [2024-06-28 03:05:13,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:13,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188306608] [2024-06-28 03:05:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:13,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:14,704 INFO 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 03:05:14,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:14,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188306608] [2024-06-28 03:05:14,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188306608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:14,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:14,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:14,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88060902] [2024-06-28 03:05:14,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:14,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:14,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:14,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:14,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:14,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:14,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 887 transitions, 13982 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 03:05:14,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:14,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:14,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:17,288 INFO L124 PetriNetUnfolderBase]: 5850/9039 cut-off events. [2024-06-28 03:05:17,288 INFO L125 PetriNetUnfolderBase]: For 1570210/1570223 co-relation queries the response was YES. [2024-06-28 03:05:17,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94218 conditions, 9039 events. 5850/9039 cut-off events. For 1570210/1570223 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 55363 event pairs, 1758 based on Foata normal form. 4/9010 useless extension candidates. Maximal degree in co-relation 94035. Up to 8297 conditions per place. [2024-06-28 03:05:17,428 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 834 selfloop transitions, 85 changer transitions 0/931 dead transitions. [2024-06-28 03:05:17,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 931 transitions, 16482 flow [2024-06-28 03:05:17,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 03:05:17,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2024-06-28 03:05:17,430 INFO L175 Difference]: Start difference. First operand has 408 places, 887 transitions, 13982 flow. Second operand 10 states and 192 transitions. [2024-06-28 03:05:17,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 931 transitions, 16482 flow [2024-06-28 03:05:21,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 931 transitions, 15972 flow, removed 99 selfloop flow, removed 10 redundant places. [2024-06-28 03:05:21,742 INFO L231 Difference]: Finished difference. Result has 408 places, 887 transitions, 13652 flow [2024-06-28 03:05:21,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13472, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=802, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13652, PETRI_PLACES=408, PETRI_TRANSITIONS=887} [2024-06-28 03:05:21,743 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 364 predicate places. [2024-06-28 03:05:21,743 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 887 transitions, 13652 flow [2024-06-28 03:05:21,743 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 03:05:21,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:21,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:21,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:05:21,744 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:21,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1276652268, now seen corresponding path program 24 times [2024-06-28 03:05:21,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:21,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716042695] [2024-06-28 03:05:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:21,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:23,128 INFO 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 03:05:23,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:23,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716042695] [2024-06-28 03:05:23,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716042695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:23,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:23,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:23,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190490739] [2024-06-28 03:05:23,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:23,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:23,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:23,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:23,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:23,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:23,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 887 transitions, 13652 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 03:05:23,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:23,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:23,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:25,717 INFO L124 PetriNetUnfolderBase]: 5842/9032 cut-off events. [2024-06-28 03:05:25,717 INFO L125 PetriNetUnfolderBase]: For 1576899/1576912 co-relation queries the response was YES. [2024-06-28 03:05:25,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93152 conditions, 9032 events. 5842/9032 cut-off events. For 1576899/1576912 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 55375 event pairs, 1763 based on Foata normal form. 4/9003 useless extension candidates. Maximal degree in co-relation 92969. Up to 8530 conditions per place. [2024-06-28 03:05:25,864 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 877 selfloop transitions, 29 changer transitions 0/918 dead transitions. [2024-06-28 03:05:25,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 918 transitions, 15636 flow [2024-06-28 03:05:25,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:25,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:25,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 03:05:25,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4232558139534884 [2024-06-28 03:05:25,868 INFO L175 Difference]: Start difference. First operand has 408 places, 887 transitions, 13652 flow. Second operand 10 states and 182 transitions. [2024-06-28 03:05:25,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 918 transitions, 15636 flow [2024-06-28 03:05:31,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 918 transitions, 15335 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 03:05:31,129 INFO L231 Difference]: Finished difference. Result has 409 places, 887 transitions, 13416 flow [2024-06-28 03:05:31,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13351, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=858, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13416, PETRI_PLACES=409, PETRI_TRANSITIONS=887} [2024-06-28 03:05:31,130 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 365 predicate places. [2024-06-28 03:05:31,131 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 887 transitions, 13416 flow [2024-06-28 03:05:31,131 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 03:05:31,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:31,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:31,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:05:31,133 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:31,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:31,133 INFO L85 PathProgramCache]: Analyzing trace with hash -205868104, now seen corresponding path program 2 times [2024-06-28 03:05:31,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:31,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451344376] [2024-06-28 03:05:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:31,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:31,899 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 03:05:31,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:31,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451344376] [2024-06-28 03:05:31,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451344376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:31,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:31,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:31,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341244924] [2024-06-28 03:05:31,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:31,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:31,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:31,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:31,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:31,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:31,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 887 transitions, 13416 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:31,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:31,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:31,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:34,208 INFO L124 PetriNetUnfolderBase]: 6036/9326 cut-off events. [2024-06-28 03:05:34,208 INFO L125 PetriNetUnfolderBase]: For 1593883/1593961 co-relation queries the response was YES. [2024-06-28 03:05:34,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93096 conditions, 9326 events. 6036/9326 cut-off events. For 1593883/1593961 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 57108 event pairs, 2018 based on Foata normal form. 35/9290 useless extension candidates. Maximal degree in co-relation 92912. Up to 8407 conditions per place. [2024-06-28 03:05:34,357 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 729 selfloop transitions, 16 changer transitions 0/901 dead transitions. [2024-06-28 03:05:34,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 901 transitions, 14992 flow [2024-06-28 03:05:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 03:05:34,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38953488372093026 [2024-06-28 03:05:34,358 INFO L175 Difference]: Start difference. First operand has 409 places, 887 transitions, 13416 flow. Second operand 8 states and 134 transitions. [2024-06-28 03:05:34,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 901 transitions, 14992 flow [2024-06-28 03:05:39,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 901 transitions, 14904 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:05:39,016 INFO L231 Difference]: Finished difference. Result has 408 places, 890 transitions, 13416 flow [2024-06-28 03:05:39,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13328, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=871, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13416, PETRI_PLACES=408, PETRI_TRANSITIONS=890} [2024-06-28 03:05:39,017 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 364 predicate places. [2024-06-28 03:05:39,017 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 890 transitions, 13416 flow [2024-06-28 03:05:39,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:39,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:39,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:39,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:05:39,017 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:39,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:39,018 INFO L85 PathProgramCache]: Analyzing trace with hash -205882054, now seen corresponding path program 3 times [2024-06-28 03:05:39,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:39,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57932305] [2024-06-28 03:05:39,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:39,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:39,824 INFO 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 03:05:39,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:39,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57932305] [2024-06-28 03:05:39,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57932305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:39,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:39,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:05:39,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885469096] [2024-06-28 03:05:39,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:39,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:05:39,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:39,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:05:39,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:05:39,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:39,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 890 transitions, 13416 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:39,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:39,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:39,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:42,490 INFO L124 PetriNetUnfolderBase]: 6024/9308 cut-off events. [2024-06-28 03:05:42,490 INFO L125 PetriNetUnfolderBase]: For 1570546/1570624 co-relation queries the response was YES. [2024-06-28 03:05:42,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92326 conditions, 9308 events. 6024/9308 cut-off events. For 1570546/1570624 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 56903 event pairs, 2013 based on Foata normal form. 34/9274 useless extension candidates. Maximal degree in co-relation 92141. Up to 8380 conditions per place. [2024-06-28 03:05:42,618 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 727 selfloop transitions, 20 changer transitions 0/903 dead transitions. [2024-06-28 03:05:42,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 903 transitions, 14958 flow [2024-06-28 03:05:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:05:42,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:05:42,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 03:05:42,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219269102990033 [2024-06-28 03:05:42,620 INFO L175 Difference]: Start difference. First operand has 408 places, 890 transitions, 13416 flow. Second operand 7 states and 127 transitions. [2024-06-28 03:05:42,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 903 transitions, 14958 flow [2024-06-28 03:05:47,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 903 transitions, 14875 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:47,573 INFO L231 Difference]: Finished difference. Result has 409 places, 890 transitions, 13379 flow [2024-06-28 03:05:47,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13333, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=890, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=870, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13379, PETRI_PLACES=409, PETRI_TRANSITIONS=890} [2024-06-28 03:05:47,573 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 365 predicate places. [2024-06-28 03:05:47,574 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 890 transitions, 13379 flow [2024-06-28 03:05:47,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:47,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:47,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:47,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:05:47,574 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:47,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:47,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1299143232, now seen corresponding path program 1 times [2024-06-28 03:05:47,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:47,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054974641] [2024-06-28 03:05:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:47,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:48,243 INFO 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 03:05:48,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:48,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054974641] [2024-06-28 03:05:48,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054974641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:48,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:48,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:05:48,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931195194] [2024-06-28 03:05:48,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:48,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:05:48,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:05:48,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:05:48,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 03:05:48,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 890 transitions, 13379 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:48,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:48,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 03:05:48,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:50,843 INFO L124 PetriNetUnfolderBase]: 6696/10046 cut-off events. [2024-06-28 03:05:50,843 INFO L125 PetriNetUnfolderBase]: For 1564335/1564335 co-relation queries the response was YES. [2024-06-28 03:05:50,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98181 conditions, 10046 events. 6696/10046 cut-off events. For 1564335/1564335 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 58369 event pairs, 2162 based on Foata normal form. 1/10047 useless extension candidates. Maximal degree in co-relation 97996. Up to 9870 conditions per place. [2024-06-28 03:05:50,998 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 884 selfloop transitions, 25 changer transitions 0/912 dead transitions. [2024-06-28 03:05:50,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 912 transitions, 15573 flow [2024-06-28 03:05:50,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:05:50,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:05:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 03:05:50,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953488372093023 [2024-06-28 03:05:50,999 INFO L175 Difference]: Start difference. First operand has 409 places, 890 transitions, 13379 flow. Second operand 7 states and 119 transitions. [2024-06-28 03:05:50,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 912 transitions, 15573 flow [2024-06-28 03:05:55,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 912 transitions, 15480 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:55,774 INFO L231 Difference]: Finished difference. Result has 410 places, 896 transitions, 13448 flow [2024-06-28 03:05:55,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13286, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=890, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13448, PETRI_PLACES=410, PETRI_TRANSITIONS=896} [2024-06-28 03:05:55,774 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 366 predicate places. [2024-06-28 03:05:55,774 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 896 transitions, 13448 flow [2024-06-28 03:05:55,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:55,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:55,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:55,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:05:55,775 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:55,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:55,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1298963494, now seen corresponding path program 1 times [2024-06-28 03:05:55,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:55,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296221432] [2024-06-28 03:05:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:55,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:56,472 INFO 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 03:05:56,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:56,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296221432] [2024-06-28 03:05:56,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296221432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:56,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:56,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:05:56,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801118582] [2024-06-28 03:05:56,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:56,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:05:56,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:56,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:05:56,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:05:56,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:05:56,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 896 transitions, 13448 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:56,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:56,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:05:56,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:59,498 INFO L124 PetriNetUnfolderBase]: 6369/9721 cut-off events. [2024-06-28 03:05:59,499 INFO L125 PetriNetUnfolderBase]: For 1602343/1602348 co-relation queries the response was YES. [2024-06-28 03:05:59,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95844 conditions, 9721 events. 6369/9721 cut-off events. For 1602343/1602348 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 58059 event pairs, 2093 based on Foata normal form. 5/9712 useless extension candidates. Maximal degree in co-relation 95658. Up to 8919 conditions per place. [2024-06-28 03:05:59,628 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 773 selfloop transitions, 26 changer transitions 0/920 dead transitions. [2024-06-28 03:05:59,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 920 transitions, 15416 flow [2024-06-28 03:05:59,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:05:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:05:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:05:59,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:05:59,629 INFO L175 Difference]: Start difference. First operand has 410 places, 896 transitions, 13448 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:05:59,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 920 transitions, 15416 flow [2024-06-28 03:06:04,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 920 transitions, 15345 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 03:06:04,178 INFO L231 Difference]: Finished difference. Result has 414 places, 902 transitions, 13541 flow [2024-06-28 03:06:04,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13377, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=873, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13541, PETRI_PLACES=414, PETRI_TRANSITIONS=902} [2024-06-28 03:06:04,178 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 370 predicate places. [2024-06-28 03:06:04,179 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 902 transitions, 13541 flow [2024-06-28 03:06:04,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:04,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:04,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:04,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:06:04,179 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:04,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:04,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1071062592, now seen corresponding path program 2 times [2024-06-28 03:06:04,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:04,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809542383] [2024-06-28 03:06:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:04,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:04,908 INFO 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 03:06:04,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:04,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809542383] [2024-06-28 03:06:04,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809542383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:04,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:04,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:06:04,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466629016] [2024-06-28 03:06:04,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:04,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:06:04,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:04,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:06:04,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:06:04,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 03:06:04,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 902 transitions, 13541 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:04,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:04,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 03:06:04,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:08,062 INFO L124 PetriNetUnfolderBase]: 6716/10074 cut-off events. [2024-06-28 03:06:08,063 INFO L125 PetriNetUnfolderBase]: For 1625401/1625401 co-relation queries the response was YES. [2024-06-28 03:06:08,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99663 conditions, 10074 events. 6716/10074 cut-off events. For 1625401/1625401 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 58551 event pairs, 2161 based on Foata normal form. 1/10075 useless extension candidates. Maximal degree in co-relation 99475. Up to 9897 conditions per place. [2024-06-28 03:06:08,188 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 888 selfloop transitions, 27 changer transitions 0/918 dead transitions. [2024-06-28 03:06:08,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 918 transitions, 15677 flow [2024-06-28 03:06:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:06:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:06:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 03:06:08,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38870431893687707 [2024-06-28 03:06:08,189 INFO L175 Difference]: Start difference. First operand has 414 places, 902 transitions, 13541 flow. Second operand 7 states and 117 transitions. [2024-06-28 03:06:08,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 918 transitions, 15677 flow [2024-06-28 03:06:13,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 918 transitions, 15612 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 03:06:13,050 INFO L231 Difference]: Finished difference. Result has 418 places, 905 transitions, 13584 flow [2024-06-28 03:06:13,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13476, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=902, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=878, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13584, PETRI_PLACES=418, PETRI_TRANSITIONS=905} [2024-06-28 03:06:13,050 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 374 predicate places. [2024-06-28 03:06:13,051 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 905 transitions, 13584 flow [2024-06-28 03:06:13,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:13,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:13,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:13,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:06:13,051 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:13,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:13,051 INFO L85 PathProgramCache]: Analyzing trace with hash 265298168, now seen corresponding path program 2 times [2024-06-28 03:06:13,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:13,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971217527] [2024-06-28 03:06:13,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:13,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:13,708 INFO 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 03:06:13,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:13,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971217527] [2024-06-28 03:06:13,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971217527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:13,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:13,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:06:13,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963895805] [2024-06-28 03:06:13,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:13,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:06:13,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:13,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:06:13,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:06:13,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:06:13,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 905 transitions, 13584 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:13,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:13,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:06:13,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:16,818 INFO L124 PetriNetUnfolderBase]: 6389/9750 cut-off events. [2024-06-28 03:06:16,818 INFO L125 PetriNetUnfolderBase]: For 1663358/1663365 co-relation queries the response was YES. [2024-06-28 03:06:16,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96998 conditions, 9750 events. 6389/9750 cut-off events. For 1663358/1663365 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 58286 event pairs, 2093 based on Foata normal form. 7/9743 useless extension candidates. Maximal degree in co-relation 96808. Up to 8938 conditions per place. [2024-06-28 03:06:16,951 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 773 selfloop transitions, 29 changer transitions 0/924 dead transitions. [2024-06-28 03:06:16,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 924 transitions, 15496 flow [2024-06-28 03:06:16,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:06:16,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:06:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 03:06:16,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-28 03:06:16,952 INFO L175 Difference]: Start difference. First operand has 418 places, 905 transitions, 13584 flow. Second operand 7 states and 126 transitions. [2024-06-28 03:06:16,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 924 transitions, 15496 flow [2024-06-28 03:06:22,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 924 transitions, 15422 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 03:06:22,057 INFO L231 Difference]: Finished difference. Result has 421 places, 908 transitions, 13626 flow [2024-06-28 03:06:22,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13510, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=905, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=879, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13626, PETRI_PLACES=421, PETRI_TRANSITIONS=908} [2024-06-28 03:06:22,057 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 377 predicate places. [2024-06-28 03:06:22,058 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 908 transitions, 13626 flow [2024-06-28 03:06:22,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:22,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:22,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:22,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:06:22,058 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:22,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:22,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1062491464, now seen corresponding path program 3 times [2024-06-28 03:06:22,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:22,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252377295] [2024-06-28 03:06:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:22,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:22,884 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 03:06:22,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:22,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252377295] [2024-06-28 03:06:22,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252377295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:22,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:22,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:06:22,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614511222] [2024-06-28 03:06:22,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:22,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:06:22,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:22,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:06:22,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:06:22,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:06:22,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 908 transitions, 13626 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:22,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:22,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:06:22,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:25,946 INFO L124 PetriNetUnfolderBase]: 6380/9738 cut-off events. [2024-06-28 03:06:25,946 INFO L125 PetriNetUnfolderBase]: For 1677818/1677825 co-relation queries the response was YES. [2024-06-28 03:06:26,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96913 conditions, 9738 events. 6380/9738 cut-off events. For 1677818/1677825 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 58179 event pairs, 2091 based on Foata normal form. 7/9731 useless extension candidates. Maximal degree in co-relation 96722. Up to 8931 conditions per place. [2024-06-28 03:06:26,068 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 769 selfloop transitions, 30 changer transitions 0/921 dead transitions. [2024-06-28 03:06:26,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 921 transitions, 15272 flow [2024-06-28 03:06:26,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:06:26,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:06:26,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:06:26,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053156146179402 [2024-06-28 03:06:26,070 INFO L175 Difference]: Start difference. First operand has 421 places, 908 transitions, 13626 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:06:26,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 921 transitions, 15272 flow [2024-06-28 03:06:31,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 921 transitions, 15138 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:31,626 INFO L231 Difference]: Finished difference. Result has 423 places, 908 transitions, 13559 flow [2024-06-28 03:06:31,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13492, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=878, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13559, PETRI_PLACES=423, PETRI_TRANSITIONS=908} [2024-06-28 03:06:31,627 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 379 predicate places. [2024-06-28 03:06:31,627 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 908 transitions, 13559 flow [2024-06-28 03:06:31,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:31,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:31,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:31,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:06:31,627 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:31,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:31,628 INFO L85 PathProgramCache]: Analyzing trace with hash -205697790, now seen corresponding path program 3 times [2024-06-28 03:06:31,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:31,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117607759] [2024-06-28 03:06:31,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:31,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:32,301 INFO 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 03:06:32,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:32,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117607759] [2024-06-28 03:06:32,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117607759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:32,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:32,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:06:32,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692207147] [2024-06-28 03:06:32,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:32,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:06:32,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:32,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:06:32,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:06:32,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2024-06-28 03:06:32,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 908 transitions, 13559 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:32,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:32,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2024-06-28 03:06:32,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:35,585 INFO L124 PetriNetUnfolderBase]: 6719/10081 cut-off events. [2024-06-28 03:06:35,585 INFO L125 PetriNetUnfolderBase]: For 1691742/1691744 co-relation queries the response was YES. [2024-06-28 03:06:35,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99953 conditions, 10081 events. 6719/10081 cut-off events. For 1691742/1691744 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 58639 event pairs, 2166 based on Foata normal form. 3/10084 useless extension candidates. Maximal degree in co-relation 99761. Up to 9903 conditions per place. [2024-06-28 03:06:35,705 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 887 selfloop transitions, 27 changer transitions 0/917 dead transitions. [2024-06-28 03:06:35,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 917 transitions, 15423 flow [2024-06-28 03:06:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:06:35,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:06:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 03:06:35,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3754152823920266 [2024-06-28 03:06:35,707 INFO L175 Difference]: Start difference. First operand has 423 places, 908 transitions, 13559 flow. Second operand 7 states and 113 transitions. [2024-06-28 03:06:35,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 917 transitions, 15423 flow [2024-06-28 03:06:40,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 917 transitions, 15331 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:40,350 INFO L231 Difference]: Finished difference. Result has 424 places, 908 transitions, 13527 flow [2024-06-28 03:06:40,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13467, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=881, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13527, PETRI_PLACES=424, PETRI_TRANSITIONS=908} [2024-06-28 03:06:40,368 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 380 predicate places. [2024-06-28 03:06:40,368 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 908 transitions, 13527 flow [2024-06-28 03:06:40,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:40,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:40,369 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 03:06:40,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:06:40,369 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:40,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:40,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1782885559, now seen corresponding path program 1 times [2024-06-28 03:06:40,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:40,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118731098] [2024-06-28 03:06:40,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:40,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:41,300 INFO 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 03:06:41,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:41,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118731098] [2024-06-28 03:06:41,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118731098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:41,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:41,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:06:41,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461360675] [2024-06-28 03:06:41,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:41,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:06:41,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:41,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:06:41,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:41,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:06:41,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 908 transitions, 13527 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 03:06:41,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:41,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:06:41,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:44,845 INFO L124 PetriNetUnfolderBase]: 6238/9648 cut-off events. [2024-06-28 03:06:44,845 INFO L125 PetriNetUnfolderBase]: For 2166876/2166905 co-relation queries the response was YES. [2024-06-28 03:06:44,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106200 conditions, 9648 events. 6238/9648 cut-off events. For 2166876/2166905 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 59823 event pairs, 979 based on Foata normal form. 22/9605 useless extension candidates. Maximal degree in co-relation 106007. Up to 6455 conditions per place. [2024-06-28 03:06:44,979 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 701 selfloop transitions, 260 changer transitions 0/976 dead transitions. [2024-06-28 03:06:44,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 976 transitions, 16797 flow [2024-06-28 03:06:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:06:44,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:06:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 247 transitions. [2024-06-28 03:06:44,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4786821705426357 [2024-06-28 03:06:44,981 INFO L175 Difference]: Start difference. First operand has 424 places, 908 transitions, 13527 flow. Second operand 12 states and 247 transitions. [2024-06-28 03:06:44,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 976 transitions, 16797 flow [2024-06-28 03:06:49,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 976 transitions, 16709 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:06:49,895 INFO L231 Difference]: Finished difference. Result has 430 places, 912 transitions, 14358 flow [2024-06-28 03:06:49,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13439, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14358, PETRI_PLACES=430, PETRI_TRANSITIONS=912} [2024-06-28 03:06:49,900 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 386 predicate places. [2024-06-28 03:06:49,900 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 912 transitions, 14358 flow [2024-06-28 03:06:49,901 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 03:06:49,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:49,901 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 03:06:49,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:06:49,901 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:49,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:49,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1178941977, now seen corresponding path program 2 times [2024-06-28 03:06:49,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:49,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3631039] [2024-06-28 03:06:49,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:49,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:51,148 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 03:06:51,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:51,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3631039] [2024-06-28 03:06:51,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3631039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:51,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:51,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:06:51,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452281564] [2024-06-28 03:06:51,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:51,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:06:51,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:51,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:06:51,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:06:51,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:06:51,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 912 transitions, 14358 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 03:06:51,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:51,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:06:51,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:55,019 INFO L124 PetriNetUnfolderBase]: 6603/10287 cut-off events. [2024-06-28 03:06:55,019 INFO L125 PetriNetUnfolderBase]: For 2454963/2454988 co-relation queries the response was YES. [2024-06-28 03:06:55,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118959 conditions, 10287 events. 6603/10287 cut-off events. For 2454963/2454988 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 65101 event pairs, 1392 based on Foata normal form. 30/10264 useless extension candidates. Maximal degree in co-relation 118764. Up to 7772 conditions per place. [2024-06-28 03:06:55,154 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 731 selfloop transitions, 255 changer transitions 0/1001 dead transitions. [2024-06-28 03:06:55,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 1001 transitions, 17778 flow [2024-06-28 03:06:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 03:06:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 03:06:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 296 transitions. [2024-06-28 03:06:55,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45891472868217054 [2024-06-28 03:06:55,156 INFO L175 Difference]: Start difference. First operand has 430 places, 912 transitions, 14358 flow. Second operand 15 states and 296 transitions. [2024-06-28 03:06:55,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 1001 transitions, 17778 flow [2024-06-28 03:07:00,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1001 transitions, 17382 flow, removed 93 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:00,912 INFO L231 Difference]: Finished difference. Result has 439 places, 933 transitions, 15196 flow [2024-06-28 03:07:00,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=14082, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=912, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=15196, PETRI_PLACES=439, PETRI_TRANSITIONS=933} [2024-06-28 03:07:00,913 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 395 predicate places. [2024-06-28 03:07:00,913 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 933 transitions, 15196 flow [2024-06-28 03:07:00,914 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 03:07:00,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:00,914 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 03:07:00,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:07:00,914 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:00,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:00,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1984960551, now seen corresponding path program 3 times [2024-06-28 03:07:00,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:00,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879357842] [2024-06-28 03:07:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:00,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:02,139 INFO 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 03:07:02,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:02,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879357842] [2024-06-28 03:07:02,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879357842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:02,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:02,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:07:02,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345355195] [2024-06-28 03:07:02,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:02,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:07:02,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:02,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:07:02,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:07:02,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:07:02,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 933 transitions, 15196 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 03:07:02,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:02,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:07:02,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand